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max. fuel pressure for a tbi ...

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Old 04-14-2012, 09:59 AM
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Car: 88 camaro irocz
Engine: l98 tpi
Transmission: 700r4
Axle/Gears: 2.77
max. fuel pressure for a tbi ...

i've always been under the impression that 30 psi is max safe fuel pressure fore a tbi . after doing some recent searches i've found some people pushing these limits . looking for imput from people running max fuel pessure in a tbi
Old 04-14-2012, 03:26 PM
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Re: max. fuel pressure for a tbi ...

You feed it what it needs, mine has aftermarket heads, cam, ect, it takes 12psi. Anymore & it runs rich, the ecm can't lean it out enough.
Old 04-14-2012, 05:55 PM
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Car: 88 camaro irocz
Engine: l98 tpi
Transmission: 700r4
Axle/Gears: 2.77
Re: max. fuel pressure for a tbi ...

i understand feed it what it needs . my question tho is what is the max. safe psi the injecters can be run at ? i other words whats the upper limit for fuel pressure before you have to buy new injecters ?
Old 04-14-2012, 06:05 PM
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Re: max. fuel pressure for a tbi ...

High psi doesn't kill them, i don't understand what your going after? When you say new, do you mean higher flowing too? Most that run higher psi are using 305 injectors on a larger engine, like a 350, 383, or a 400.
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