Magnafuel 750 e85 limit. Product Q&A. Magnafuel 750 e85 limit

 
 Product Q&AMagnafuel 750 e85 limit  That is why I asked if dual walbro 255lph or the Magnafuel is best for

My car currently makes 915/940 mustang dyno on 21. i am running Naty Nate's fuel cell with the magnafuel 4303 pro tuner 750 pump submerged in the tank with -10 feed & -10 return. MagnaFuel ProTuner 750 Inline Electric Fuel Pump Black (0) Reviews: Write first review. MagnaFuel ProTuner750 Fuel Pump. magnafuel 750 rebuild kit; 2017 subaru wrx sti invidia exhaust; 55545-0r120-c0; ngk r7438-8 (ngk part number 4905) fmx transmission performance parts;I personally run magnafuel 750 pump n regulator. EFI regulators are adjustable form 35 to 85psi. Add To Cart. 866-722-3432. 0. -10 in and -8 out or -12 in and -10 out). They can support 2,000 hp and up, while offering continuous-duty use. 128 N&S for a 4150, . Special Order. That and the Magnafuel 4303 is on my list if I decide a single pump is the way to go. magnafuel 750 efi; 2007 bmw 318i engine specs; suzuki swift sport tuning parts; kr-409s; msd 6010 for sale;2919 posts · Joined 2014. No shippingFind Parts and Accessories quick fuel 750 KEYWORD and get Free Shipping on Orders Over $109 at Summit Racing!. I have been going over and over on my return fuel setup for big power on e85 and I believe I have decided on a single external pump with a sumped tank. the difference in price between a 1000hp fuel system and a 1500hp one isn't much. Blown06. Toy - 01' Bullitt #3320: Borg Warner S475/83 - Built 4r70w DD - 09' Kawasaki ZX6r. Magnafuel 750. Out of the pump -8 is fine. #4 · Mar 30, 2015. E85 Technical Forum . here is three in a row out of camerons 9. Why isn't anyone using a Magnafuel 750? I'm sure there is a reason, I'm just not getting it. Thread starter dyezak; Start date Oct 12, 2017Billet atomizer 225 inj 1/2" fuel line(3/8's return) with dual Magnafuel 750 pumps E85 GTX5533-91 turbo Liquid intercooler 5" exh. Add to Cart . MetalGearMotorsports · #13 · Aug 20, 2012. Note: Calculation is based on fuel pressure of 43. Keep in mind that when choosing alcohol or E85 that they require up to nearly twice the volume of gasoline to satisfy the needs of the engine, and that a higher volume fuel pump and larger diameter fuel lines may be required. •High performance when rated at flow vs. MagnaFuel ProTuner 750 Series inline fuel pumps feature quiet operation, which makes them ideal for street or performance use. 5. . Puts down 1060rwhp on 14psi with e85. twin 68mm Turbos, 406 SBC on E85 with a CSU carb, Magnafuel 500 pump. We ended up putting a 2025 weldon on it and made 802rwhp on e85. Gasoline or E85. best time 5. Just wondering if I will be able to dial it down to around 6 psi??? That 28psi max from the pump to the inlet of your regulator. 50-15 radial drag slicks Checkered racing front clip with Alston coil overs. com. $394. 27 psi of boost so it was 35 psi of fuel pressure. Prefilter to Magnafuel 750 Protuner to post-filter. If we divide that volume by eight injectors (for a V8 engine), this comes to 31. Walbro performance fuel systems are designed to deliver the speed, power, torque and reliability you expect. The PRO STAR 500 series can be run continuously up to 1 ½ hours for limited street driving. 4 x 10. Senior. 7028 Views 12 Replies 5 Participants Last post by meats50, May 30, 2013 Jump to. On gas, it was fine, but with the extra volume needed by E85, it was DONE. <br /> Each FOUR DOOR ® power valve is hand tested and set to the stamped<br />Find many great new & used options and get the best deals for Magnafuel MP-4303 Fuel Pump ProTuner 750 Electric 20-120PSI 8AN In/Out E85 at the best online prices at eBay! Free shipping for many products!Since 1995, MagnaFuel has been designing and manufacturing high-quality and long-lasting high-performance aftermarket fuel systems for various applications ranging from boats and trucks to street and pro racing cars. magnafuel 750 fuel pump; 70477 fabric; optima battery yel34/78; s-26986; edelbrock victor jr heads 351w; msd 8360 adjustable vacuum advance;Magnafuel 4303 Fuel Pump Toyota Supra in tank with door shut. Add to Cart $519. says 750 on their site, but Im on e85 car makes 600 crank, yay or nay? See less See more Reply. 23LPH (13. # MP-4303 and BBR's jackal pump hat system. In 4th it is 17-18psi and then in 5th we run 21-22psi and it pulls HARD. The plan is to go turbo E85( I know this is a lot of injector for the current setup). $583. MagnaFuel Replacement In-Line Filter Element. #6 · Jul 6, 2016. $575. Making 900-1000hp currently. EFI/E85/Blower @75PSI: Up to 1100HP. Factory fuel system using meth. 88@141/173 MPH with 30psi boost ramped in and 1. MP-7007-BLK. Technical Details. New posts Search forums. 0/7. Posted June 8, 2014. MAGNAFUEL PRODUCTS INC. i never had a problem with it. Either pump is fine, but run a -10 supply to either one of those pumps. MagnaFuel ProStar EFI SQ 750 Fuel Pump. Dual 8 AN O-Ring Outlets, 1/8 in NPT Port, Aluminum, Blue/Purple, E85 / Gas/Methanol, Each. something comparable to. Manual trans, Rotofab CAI, Pacesetter coated 1 7/8" headers, BMR 1" drop springs, 545/515. In California, our overpriced pump premium sells for roughly $3. 140's for Dominators on gas or E85. 88@141/173 MPH with 30psi boost ramped in and 1. 93hatch Discussion Starter · Mar 19, 2014. 5psi of boost. 5761 posts · Joined 2010. MagnaFuel ProTuner 750 Series in-line fuel pumps feature quiet operation, which makes them ideal for street or performance use. Page 1 of 2. Badass. Kris396 · Registered. Dropping pressure magnafuel 750. Some products legal for racing only; never to be used on public roads or emission-controlled vehicles. Got the car up and running on the newly installed return system not sure exactly when but it was a few months later. 91RsNate. was advised that "pump gas" E85 has additives which may be the cause, would be best to get a drum of true E85 and use it or just switch to 110, my engine is only 11:1 compression which aint huge, but it sure liked the E85 the other night and would like to make something work without having to buy high dollar fuel, just a po-boy here ballin on a. Blower sounds so good when it's cold. 0 on 25 psi 1117WHP 884 WTQMagnafuel 750 on my 95 mustang GT this was the pump I choose to go with after E85 fuel switch. Regulator Part#'s: For EFI applications: MP-9950 For Boosted EFI applications: MP-9950-B For Carbureted conversion: MP-9950-C . I do have the fuel lobe on the cam assisting with fueling and can still run E85. 88@141/173 MPH with 30psi boost ramped in and 1. 3. The best part is that for most of the country, E85 costs approximately one dollar less per gallon than pump premium. On my daily driver Corvette I have the P/N set to 5,800 rpm and as long as the clutch pedal is off the top (disengaged) switch it will hold it at that rpm. ORB-10 inlet and outlet ports. Billet atomizer 225 inj 1/2" fuel line(3/8's return) with dual Magnafuel 750 pumps E85 GTX5533-91 turbo Liquid intercooler 5" exh. On 6/7/2014 at 12:49 PM, BlackdogNY said: Cranks, pump makes pumping sounds. 97. The PRO STAR 500 series can be run continuously up to 1 ½ hours for limited street driving. I am leaning toward 16 injectors and wanna know if anyone sees a issue here. I don't think the pump is the problem it may be the factory line running low on volume to feed 1000+ wheel on E85. Answered by: Jon Jegs Tech. •NeverMagnafuel's -8AN In/Out Stainless Steel Fuel Filter. 24@150 pass on his SBE E85 crown vic. compact and light weight. Go to #1 01-25-2016 12:08 PM by insaneimpreza. I purposefully ran my base at 44 with a 2345 at 18 volts and was still 100% dc with 160 injectors. I'm building a fuel system for my E85 carbed 13:1 compression 408W. 4 inches : Country of Origin ‎USA :. MP-6150. MagnaFuel Pressure Control Units Series Model MP-9433 (4 Port) Series Model MP-9690 (boost) Series Model MP-9633 (2 Port) Series Model MP-9833 (2 Port) Introduction: MagnaFuel pressure control units, part numbers MP-9400, MP-9600 and MP-9800 are designed for racing only and should not be used on any vehicle subject to emission control. 0 out of 5 stars Worth every cent!! Reviewed in the United States on August 24, 2020. item 3 MagnaFuel ProTuner 750 Inline Electric Fuel Pump MP-4303 MagnaFuel ProTuner 750 Inline Electric Fuel Pump MP-4303. For 200lbs per hour you might want to try a GM E85 pump from a V8 truck. Secondary HR-680-VS 680 CFM Vac. 8an return. , 2,000+ HP, Universal, Each. 3 x 3. x volts with combined fuel pressure (Boost+Base) expected to be approaching 95-100psi on E98/E85. MagnaFuel MP-7007 - In-Line After Filter. '18 GT-R, FBO & E85 '15 GT-PP, Whipple + Lund, 815rwhp @ 13psi Dynojet STD E85 '09 370z, TT, 671rwhp @ 12psi Dynojet STD E85 Reactions: Cory S We are currently testing one on a 66 nova with a LS3 and a Vortec blower at 800 HP on E85. my car made 1656 to the tires. . 14 amps at 45psi. 00 pounds per hour - Gasoline (lb/hr) Equals : 368. Not Yet Reviewed. -----I think three 044's will go a tad farther. Helpful. This item MagnaFuel Fuel Pump, QuickStar 300, Electric, In-Line, 25-36 psi, 10 AN Female O-Ring Inlet/Outlet, 8 AN Bypass, E85 / Gas, Each Holley Electric Fuel Pump 6194-2 Blu Auto Aeromotive 11101 Red Fuel Pump (A1000 - EFI or Carbureted Applications)Welcome to the North American Subaru Impreza Owners Club: Friday September 23, 2022Billet atomizer 225 inj 1/2" fuel line(3/8's return) with dual Magnafuel 750 pumps E85 GTX5533-91 turbo Liquid intercooler 5" exh. FREE delivery Fri, Nov 17 . Appreciate any input, thanks. magnafuel 750 e85 limit; walker exhaust 56211; csf intercooler 335d; 270 hp 4l v6; 2000 ford mustang battery walmart; on-09rd; sbc lightweight solid lifters; bosal 256-339; derale fan controller problems; ngk r6725-10; oberg 600 oil filter instructions; 2t8103-std; wiseco bbc pistons; weiand 7546 divider plate; repuestos samsung sm3 en 10 de. Billet atomizer 225 inj 1/2" fuel line(3/8's return) with dual Magnafuel 750 pumps E85 GTX5533-91 turbo Liquid intercooler 5" exh. Boost ref regulator: $150. 0 out of 5 stars. Find MagnaFuel ProTuner 750 Series In-Line Fuel Pumps and get Free Shipping on Orders Over $109 at Summit Racing! MagnaFuel ProTuner 750 Series inline fuel pumps feature quiet operation, which makes them ideal for street or performance use. Electric, In-Line, 20-120 psi, 8 AN Female O-Ring Inlet / Outlet, E85 / Gas, Each Availability: Same Day Shipping! Shipping: FREE SHIPPING! Was: $543. Fuel Pump, ProStar, EFI SQ750, Electric Gear, High-Pressure, High-Volume, Alcohol, Gasoline, 20. Save: $13. 99. Q-750-E85* Q-Series carburetor with E85 calibration for drag racing<br />. Sale: $529. MagnaFuel ProStar 750's (pn 4703 & 4103) are compatible with gasoline, ethanol or methanol. Bar. Summit Racing rates these pumps at 600 lbs per hour. Magnafuel pumps MP-4303 = 2000+ hp, 20-120psi, 14 amps@45psi. *QuickStar 300 Instruction Sheet*. best time 5. . Or two 4303 magma fuel pumps. • Self priming. 2014 ZL1. 5-liter staged surge tank. See More Details about "MAGNAFUEL ProTuner 750 2000hp Inline Fuel Pump Mp-4303" Return to top. Fuel Pump, Electric, Pro Star EFI 750, External, Gas/Alcohol, 325 gph, Universal, Each. base fuel pressure anywhere from 40-60, 20psi, -10feed and -8 return. I'm guessing I'll be around 70 psi with a base of 40 psi (about 30 psi boost). 252 posts · Joined 2005. MagnaFuel Outlaw 750 Series Belt Drive Fuel Pumps MP-4203-BLK Fuel Pump, Outlaw 750 Series, Aluminum, Black Anodized, 0-150 psi, -10 AN. the MP-4303 is only rated to 2,000 and has -08an in/out. Or you can think outside the box port injection intake manifold $1450 Custom surge tank and magnafuel 4303 pump (pump $500, tank $250) lines to the front. Complete systems for custom tank fabricators. ProTuner 750 Kit w/ Boost Regulator, Filters, Fittings. If you are having problems with your Mangafuel. The MP-4401 and MP-4450 are a precision assembly for maximum performance. Weldons elec pumps are too loud for me. 3 on 24 psi (2015) Dominator EFI 3850 lbs New setup for 2016 Twin Billet S374's from CRT turbo, 6. 1488 posts · Joined 2009. Depending on application it is capable of 700-800hp on E85. Limit one rebate per household. 35. 750 posts ·. E85 Return Fuel System Limits w 80lb INJ. In-Line, 20-120 psi, 8 AN Female O-Ring Inlet / Outlet, E85 / Gas, Aluminum, Black Anodized. Availability: Same Day Shipping! Shipping: FREE SHIPPING! Was: $796. blownholley50 · #17 · Oct 19, 2015. Estimated Ship Date: Nov 17, 2023 if ordered today. magnafuel 750 hp rating; mr gasket fuel pump leaking; 2006 lexus is350 exhaust diameter; american racing headers for dodge challenger rt; weiand 7546 divider plate;. Billet atomizer 225 inj 1/2" fuel line(3/8's return) with dual Magnafuel 750 pumps E85 GTX5533-91 turbo Liquid intercooler 5" exh. Gasoline, Alcohol & E85 Compatible; Red Anodized Finish See more product details. Additional features: * No pump shaft seals * CNC-machined, hard-anodized aircraft. This is the kind of pump that’s needed to ensure the surge tank never runs out of fuel. Previous. MP 4810 ProStar Kit. •Pump bodies computer machined out of high quality 6061-T6 Billet Aluminum. You should isolate the regulator with. To calculate peak fuel consumption for an 800 hp E-85 engine we can use a BSFC of . MagnaFuel MP-4303 ProTuner 750 In-Line Fuel Pump Features: Mounting bracket included; Quiet operation; Self-priming; High-torque custom motor with low. -ProStar 500. . Specs. Four link and ford 9" with 3. Ratings: ProStar SQ 525 rated at 1500+ HP*. Fuel Pump, ProTuner 750, Electric, In-Line, 20-120 psi, 8 AN Female O-Ring Inlet / Outlet, E85 / Gas, Each. Not Yet Reviewed. Shit. Bar. 26 60'I originally built the fuel system for an 800 hp gas engine, but it works well for my current e85 combo. That's $6000ish for a maxed out e85 system that will get you barely 1000whp. $20. Billet atomizer 225 inj 1/2" fuel line(3/8's return) with dual Magnafuel 750 pumps E85 GTX5533-91 turbo Liquid intercooler 5" exh. Watch on. Psi. magnafuel 750 rebuild kit; 2017 subaru wrx sti invidia exhaust; 55545. On e85 1400@ 28 psi. (0) $121. 4. Estimated Ship Date: Tomorrow. FREE delivery Wed, Nov 15 . Thats about what I've seen as well. If you start at 60 then try to ramp up to. Opens in a new window or tab. i just swapped 2 the prostar 750, but my pro tuner did better than people said it would. Estimated Ship Date: Today. Fuel Pump, Electric In Tank, ProTuner 750 Intank Fuel Pump 10" Tank with Pickup and Filter Sock. A total of 749 items were found. I would use that before the Prostar 500 with a return system. Still get 11. They can support 1,500 hp and up, while offering continuous-duty use. . 16 Bosch 210 are around $1100. · 650 HP multiplied by a . Closer to 1000 on e85. MagnaFuel MP-4703 ProStar 750 EFI Electric Fuel Pump. So far, the longest period of time using this fuel system from Magnafuel is about an hour (old combo). 97. On gas, it was fine, but with the extra volume needed by E85, it was DONE. He says it's about 1300 FWHP on E85, depending on setup. •External by-pass to eliminate pump cavitations. . Up front there’s a MagnaFuel adjustable fuel pressure regulator, custom Spot On rails and eight Bosch 1000cc injectors. MP4103 efi/M1/turbo – 1500hp@ 75psi at the crank. S GAL of E85 contains roughly 81,800 BTU's of energy. Factory fuel system when tuning tricks are involved 3 Factory fuel system when running E85 4. MagnaFuel ProTuner 750 Series In-Line Fuel Pumps. I have also fitted a large b&m Trans cooler with fan to try and cool the fuel, this did make stop the pressured drop for 15mins but then started to drop pressure again. MagnaFuel EFI Fuel Pressure Control Units MP-9940-B-BLK Fuel Pressure Regulator, EFI, Boost Reference, 4-Port with Return, Black Anodized, 35-85 psi, Universal, Each Part Number: MRF-MP9940B-BLKMagnaFuel MP-4450 ProStar 500 Electric Fuel Pump with Filter Aeromotive 11202 Fuel Pump (A2000 Drag Race Carbureted) MagnaFuel Fuel Pump, ProTuner 750, Electric, In-Line, 20-120 psi, 8 AN Female O-Ring Inlet/Outlet, E85 / Gas, EachHey guys im re-doing my fuel system with an external magnafuel 750/ fuel cell. What fwhp would a 625 efi magnafuel pump be able to handle with 160lbs injector on e85? Base pressure 45psi 8an in and out. Drop Ship;These MagnaFuel ProTuner 750 Series in-line fuel pumps feature quiet operation, which makes them ideal for street or performance use. I was all set to go with the Quickstar 300 pump which I thought would be way over kill, when the engine builder/parts supplier heard I would be running E85 , has advised to upgrade yet again to the prostar 500. 80@140mph on 11psi. ²Fittings not included. y_2023, m_11, d_18, h_7CST. So since fore precision is on hold for now, I am going with Glenn's Performance Build your own Sumped tank and going with a Magnafuel pump. $750-$1000 (2) $1000-$1500 (3) Filter Options. EASY Returns & Exchange. Has anyone run one of the Magnafuel or Weldon big E85 compliant pumps off a surge tank instead of running dual Walbro 450's or similar?? Goal is 750ish whp with room to grow if that helps. Welcome to the North American Subaru Impreza Owners Club: Saturday January 7, 20235192 posts · Joined 2003. View sample plans. cam406406. 1. 99 USD. Magnafuel's website says 14 amp draw at 45 psi. Two -8 feed lines to either front or back of rails then to each side of Fore fuel regulator. Welcome Guest. - QuickStar 275. Outlaw MP-4201. Great bang for buck. Used with the stock mounting bracket and a cushioned clamp to give extra stability to the motor. Call Magnafuel. View All. I loved what it did for me at WOT under boost, but it just wasn't worth the drivability issues. Rick. 1. Additional features: * No. They can support 2,000 hp and up, while offering continuous-duty use. However, I replaced the dual Walbros with a single Magnafuel Pro-tuner 750. So I ordered a MagnaFuel 750 ProTuner pump (4303) in July 2013. In Stock. Pumps lots of fuel. MP4103 efi/M1/turbo – 1500hp@ 75psi at the crank. 3. Flow tested to ensure maximum performance. One of these items ships sooner than the other. MagnaFuel Fuel Pump, QuickStar 300, Electric, In-Line, 25-36 psi, 10 AN Female O-Ring Inlet/Outlet, 8 AN Bypass, E85 / Gas, Each. Click image to zoom. MagnaFuel Fuel Pump, ProTuner 750, Electric, In-Line, 20-120 psi, 8 AN Female O-Ring Inlet/Outlet, E85 / Gas, Each. Previous image. +. Plus, we carry stock replacement fuel pumps. So basically does anyone know the horsepower limits on 1. Advanced Search Cancel. 97. Carefully lift the carburetor off and set it in a container to drain. 99. 598 BBF F3R EFI pump gas, I run two Magnafuel electric fuel pumps one 750 ProStar and one 750 Pro Tuner. 50-15 radial drag slicks Checkered racing front clip with Alston coil overs. • Continuous duty. Made 855+ at the wheels on 80's running E85 at 68psi base pressure using 3 intank walbro 255HP pumps. Additional features: * No pump shaft seals * CNC-machined, hard-anodized aircraft aluminum I am going to be running e85 now also. $660. I guess I'll find out in a few months. No controller and will make something like 1300-1400 rwhp on gas. Fed from a bulkhead in bottom of tank, -10 feed to pump, -8. . Reply Quote. The MP-9950-C is adjustable from 18 to 50psi. MagnaFuel Pro Tuner 750 Inline Fuel Pump MagnaFuel. You're on Page 1 of 2. 8. MP-4900. also that pump is not rated for alcohol so wont technically work for e85. in this thread in this sub-forum in the entire site. 750-ho-e85 $619. 3450 pounds. E85 compatible pump and is good for around 2000hp on pump gas. 5. It is also possible to tune in a 2-step, if you have a manual transmission, using HPTuners by setting the P/N rev limit to your 2-step rpm. New posts Search forums. 0 system from Chris w/ wastegate, etc. The store will not work correctly in the case when cookies are disabled. 4 interest-free installments, or from $46. Magnafuel 275 on e85 max HP? 646 Views 2 Replies 2 Participants Last post by 93hatch, Mar 19, 2014. 88@141/173 MPH with 30psi boost ramped in and 1. 1 x 5. 5v systems:Save. Select the model with the size, psi limit, and flow rate needed for your application. More to explore : MagnaFuel. MagnaFuel Fuel Pump, ProTuner 750, Electric, In-Line, 20-120 psi, 8 AN Female O-Ring Inlet/Outlet, E85 / Gas, Each. COLORADO SPRINGS, CO 80915 © 2016 MagnaFuel. MagnaFuel ProTuner 750 Series inline fuel pumps feature quiet operation, which makes them ideal for street or performance use. Recommend . For many the pump upgrade / fuel pump booster will be adequate with a larger injector. Add to Cart . Store. 60 per gallon while. Parts & Accessories. and a slipping trans. Recommend . . mainly wanting to see how you came into the engine bay, i am running the lines. 12. QuickStar 300. 5 out of 5 stars. 1,010. Play online casino real money games and transform your day! Billet atomizer 225 inj 1/2" fuel line(3/8's return) with dual Magnafuel 750 pumps E85 GTX5533-91 turbo Liquid intercooler 5" exh. 19 $ 741. Estimated Ship Date: Nov 28, 2023 (if ordered today) Special Order. #8 · Jun 13, 2016. . . This season I maxed out my magnafuel pro tuner 750 and need an upgrade. $1,632. Swapping to e85 would gain you a bit consistency in the carb tune up in relationship to weather, also gain a bit of torque with no other changes. Find MagnaFuel Carbureted Fuel Pressure Regulators and get Free Shipping on Orders Over $109 at Summit Racing! MagnaFuel carbureted fuel pressure regulators feature a unique cartridge design that provides the most stable platform for fuel delivery in the performance industry. Four link and ford 9" with 3. Only 5 left in stock - order soon. EASY Returns & Exchange. Outlaw MP-4202. GL guys I'll let you know what I come up with pretty soon. •High performance when rated at flow vs. 0/7. Rick88ss. Carburetor. 99. #1 · Jun 6, 2016. EFI/Gas/Turbo @75PSI: Up to 1500HP. 250 in. Pumps. Gallery 1. Any of you e85 guys running a magnafuel? I need one that can support around 750rwhp, will a magnafuel 750 be good? ThanksThe biggest limit I've seen on the stock isn't as much the intake manifold as it is the stock cam. 5v systems: Save. Magnafuel ProTuner 750 2000hp Inline Fuel Pump MP-4303 . The car is run on regular 110 race fuel. Outlaw MP-4204. 598 BBF F3R EFI pump gas, I run two Magnafuel electric fuel pumps one 750 ProStar and one 750 Pro Tuner. magnafuel 750 e85 limit; vintage walker muffler sign; 2001 bmw 330xi oil capacity; nissan 350z z1 exhaust; koni sport golf mk2; wix 33239 cross reference;. These handsome filters protect your investment for many years. 88@141/173 MPH with 30psi boost ramped in and 1. toms_supra Discussion starter. I am looking to see how some of you have routed your fuel line's when on a gen4 fbody. $589. Maybe Steve can answer this better.