C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Keep injectors stock or not?

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Old Jun 11, 2003 | 04:07 PM
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Paul G's Avatar
Paul G
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Default Keep injectors stock or not?

Would changing my stock injectors to a larger size and/or adding an adjustable fuel pressure regulator actually improve performance?

Things I have done:
Porting work to the plenum and base
Hypertech coil kit
Fresh (cut) plugs and wires

Done before me:
Hypertech chip (already installed when I got the car)
Borla cat back (installed when I got the car)
K&N filter (already installed)

Porting the plenum and base probably was the one thing that gave me the most "seat of the pants" feel of improvement. I would highly recomend this. And it doesnt cost hardly anything.

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Old Jun 11, 2003 | 04:56 PM
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Default Re: Keep injectors stock or not? (Paul G)

Nah, you dont need bigger injectors yet, as long as your stockers are working fine leave them alone.

But an AFPR will help in tuning it, that might give you a couple more HP.
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Old Jun 11, 2003 | 05:33 PM
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Default Re: Keep injectors stock or not? (Paul G)

I don't think the AFPR will help any. The computer will adjust the A/F ratio based on the O2 sensors. It will "learn" that you run rich and adjust the pulse width accordingly. JMHO

Plugs and wires (if the ones you have are getting old) is one of the best "bolt on mods"
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