fuel pressure
06-13-2007, 09:34 AM
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Car: 91 z28, 07 trailblazer ss
Engine: lt1lt4 hot cam,ls2
Transmission: t56
Axle/Gears: 3.73
fuel pressure
Ok,this will hopefully be the last post for awhile. I am not sure what i should set my fuel presure at, i put a new adjustible regulator on it. My motor has vortec heads,headers,edelbrock hi flo intake,big mouth runners,flowmaster3in, a chip,ram air, and a msd 6al box.I don`t think it would matter but i am also running 3.73`s
06-13-2007, 11:38 AM
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Car: 1989 IROC-Z
Engine: 5.7L EFI LTR setup
Transmission: T-5 World Class
Re: fuel pressure
somewhere around mid to high 40's psi . You will have to do some trial and error to find what works best for you ( dyno )
06-14-2007, 01:59 AM
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Car: Red 1987 IROC Convertible
Engine: 305 LB9 TPI
Transmission: T5 5-Speed
Axle/Gears: 9-Bolt 3.45
Re: fuel pressure
Stock fuel injectors? Start with 46-47 PSI.
06-14-2007, 07:50 AM
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06-14-2007, 10:35 AM
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Car: 91 z28, 07 trailblazer ss
Engine: lt1lt4 hot cam,ls2
Transmission: t56
Axle/Gears: 3.73
Re: fuel pressure
i am currently at 47 psi, and it`s just a junk hypertech. I need to get one burnt
06-14-2007, 08:44 PM
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Car: 09 GSXR/88 iroc/91 RS B4C
Engine: 600cc/l5.7/5.7
Transmission: 6 speed/TH 350/auto
Axle/Gears: 45tooth rear?/3.23/3.42
Re: fuel pressure
? i also have hypertech chip that was set to a 305 i've since dropped in a 350 so im right about to send in my hypertech to get reprogrammed to 350 stats. why is hypertech junk, should i even waste the money in having my hypertech chip redone or what would be a better a option
06-15-2007, 05:55 AM
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Car: 92 GTA/ 00 TA
Engine: 383/350
Transmission: 700R4/T-56
Re: fuel pressure
All they do is change a couple of minor things. A ballpark guess. Add a little spark advance. If you're lucky they'll change a little in the fuel tables. All in all not much.
You should burn your own. This way you can make it custom to YOUR engine and not just have a chip that'll kinda work for 100's of engines. Your engine likes what it likes. Doesn't mean your engine and combo is gonna like exactly what Joe Public's engine likes.
See what I mean?
You should burn your own. This way you can make it custom to YOUR engine and not just have a chip that'll kinda work for 100's of engines. Your engine likes what it likes. Doesn't mean your engine and combo is gonna like exactly what Joe Public's engine likes.
See what I mean?
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06-19-2007, 11:27 AM
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Car: Red 1987 IROC Convertible
Engine: 305 LB9 TPI
Transmission: T5 5-Speed
Axle/Gears: 9-Bolt 3.45
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