It's time to remove my FMU , I have searched and read alot of posts. I see the overall picture of how to, but. How do you decide the injector size. Is there a way of knowing? The fuel pressure is raised by the FMU, I have read to replace it with a 1:1 regulator. What is the difference? Isn't that the same thing.
These are a couple of tuning questions I have before I begin my winter project . The engine is will be freshen up over the winter, also a new stall converter from Dirtd0g performance.
Moderators: EDS50, cgrey8, 2Shaker, Jon 94GT
Removing FMU
95 Mustang GT Convertible, AFR heads ,Ported Explorer upper and lower manifold.42# injectors , 90MM MAF,AEM Power pipe, Crane 2031 cam, Crane 1.7 RR, 9.2-1 compression ,Vortech Supercharger v2SQ ,12 psi boost, 4r70w transmission, Circle -d 3200 Stall Converter BBK Upper and lower Rear Controls Arms,3.27 gears,CBAZA,U4PO, Moates QH BE/EA , AEM WB. (CBAZA).
Re: Removing FMU
How much boost? I'm running 42's and don't plan on going over 14-15psi. A friend of mine is running 60's and around 20lbs. The only regulator I have on mine is an adjustable one ( because I had it lying around) and it's set for 39 psi with no vacuum.
302; Thumper Heads; TFS 1Cam; Cobra Intake; Vortech V3SQ; UPR Boost Pipe; 42lb injectors; 255lph fuel pump; Lightning 90mm MAF; MAC shorties; Off-road H pipe;A9L; QuarterHorse; BE; LC-1 Wideband
Re: Removing FMU
I'm see 8 psi at 5500 rpms. the problem is I also see AFR going into the 10's with a slight missfire, and tons of black smoke.
95 Mustang GT Convertible, AFR heads ,Ported Explorer upper and lower manifold.42# injectors , 90MM MAF,AEM Power pipe, Crane 2031 cam, Crane 1.7 RR, 9.2-1 compression ,Vortech Supercharger v2SQ ,12 psi boost, 4r70w transmission, Circle -d 3200 Stall Converter BBK Upper and lower Rear Controls Arms,3.27 gears,CBAZA,U4PO, Moates QH BE/EA , AEM WB. (CBAZA).
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decipha
Re: Removing FMU
no point in anything smaller than 80s
you can use a fpr from an 89-95 supercoupe, they have boost referenced and should bolt right on your stock fuel rail
but if going the aftermarket route i recommend the mallory
you can use a fpr from an 89-95 supercoupe, they have boost referenced and should bolt right on your stock fuel rail
but if going the aftermarket route i recommend the mallory
Re: Removing FMU
Why 80# injectors. This is a weekend cruiser, one I hope to keep streetable, with a reasonable idle. I have noticed the injector sizes vary, from project to project, is there a way of getting a injector that will be easy to tune and still have good power. If 80# injectors are the best then why. Because I really want to know before I buy some.
95 Mustang GT Convertible, AFR heads ,Ported Explorer upper and lower manifold.42# injectors , 90MM MAF,AEM Power pipe, Crane 2031 cam, Crane 1.7 RR, 9.2-1 compression ,Vortech Supercharger v2SQ ,12 psi boost, 4r70w transmission, Circle -d 3200 Stall Converter BBK Upper and lower Rear Controls Arms,3.27 gears,CBAZA,U4PO, Moates QH BE/EA , AEM WB. (CBAZA).
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decipha
Re: Removing FMU
the siemens deka high impedance injectors are pretty much stock replacements
only a fool that doesn't know any better would get anything less
i put those injectors in stock 4 cylinders with no prob
only a fool that doesn't know any better would get anything less
i put those injectors in stock 4 cylinders with no prob
Re: Removing FMU
A foolish comment to make my friend,decipha wrote:the siemens deka high impedance injectors are pretty much stock replacements
only a fool that doesn't know any better would get anything less
i put those injectors in stock 4 cylinders with no prob
This fool went 9.63 @ 143mph, 1.34 60ft and 6.10 1/8th mi. with hi impedence 50's and 23# of boost on a drag radial. Street driven and track assaulted in the Florida heat. Its all in the tune and set up.
1992 Mustang LX - 25.1c Chassis, Vortech Blown Dart 333 on Meth, Lentech Trans, TRZ Backhalf, A9P Tune, Moates QH/SL v1.9, BE, EA, TunerView
2003 Mach 1 - CoreTuning RYAK1/ZYA2 QH Tuned, Borla Atak Cat Back, Long Tubes/Off Road X-Pipe, Twin 65mm TB, JLT CAI, ICT Billet Intake Spacer, BMR Tubular K-Member and A-arms, Maximum Motorsports coil overs with Bilstein Suspension, Steeda Adj. Rear Upper/Lower Control Arms, QA1 Bump Steer, Steeda Short Throw Shifter, WOT Box, 315/35/17's.
2003 Mach 1 - CoreTuning RYAK1/ZYA2 QH Tuned, Borla Atak Cat Back, Long Tubes/Off Road X-Pipe, Twin 65mm TB, JLT CAI, ICT Billet Intake Spacer, BMR Tubular K-Member and A-arms, Maximum Motorsports coil overs with Bilstein Suspension, Steeda Adj. Rear Upper/Lower Control Arms, QA1 Bump Steer, Steeda Short Throw Shifter, WOT Box, 315/35/17's.
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