getting a chip, 24# injectors on tpi, what fuel pressure??
03-05-2008, 07:35 AM
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getting a chip, 24# injectors on tpi, what fuel pressure?? Ok so its finally that time. I have a few extra buck on my bank account so i decided to go ahead and get a custom chip for my vehicle. Basically i need a chip for the 305 tpi computer to control a 350 w/ some mods and 24# injectors and a LT1 manifold. Right now i have 19# @ ~52psi, i have flat top pistons, 64cc heads, cam: Duration @ .006 tappet lift 264/269 Gross valve lift .488/.495 with the 1.6 rocker arms its like ~510 Duration @ .050 212/218
@ what psi should i run my injectors?? i have a walbro 255lph fuel pump.
i'm getting the chip from tpichips.com by the way!
@ what psi should i run my injectors?? i have a walbro 255lph fuel pump.
i'm getting the chip from tpichips.com by the way!
03-09-2008, 06:57 PM
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Fuel pressure is not a "one size fits all" kind of thing. You'll have to play with the pressure to find what your car likes. Stock is around 42 psi. I like to get mine up to 46 psi to provide a better spray pattern. Then you can adjust it one or two lbs at the track based on conditions.
03-10-2008, 07:32 AM
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i talked to Brian @ TPICHIPS and he said that 44-45psi on the 24# should be good, but i will be messing w/ the pressure to see where it runs the best!! i dont wanna run it too rich or too lean, i guess its time for a wideband!!
