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

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Old Aug 19, 2022 | 12:20 AM
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Jez28's Avatar
Jez28
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Default Injectors

Hi all,
Hope you can help me with some advice.

89 TPI

The previous owner installed high lift rockers and a 56mm throttle body, I have noticed it misfires when it warms up, not a regular miss just the odd pop at reflowed rpm”s and idle. My question is should it have higher flow injectors for these modifications?

Could this be the cause of the lumpy running?

Thanks
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Old Aug 19, 2022 | 08:45 AM
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Originally Posted by Jez28
Hi all,
Hope you can help me with some advice.

89 TPI

The previous owner installed high lift rockers and a 56mm throttle body, I have noticed it misfires when it warms up, not a regular miss just the odd pop at reflowed rpm”s and idle. My question is should it have higher flow injectors for these modifications?

Could this be the cause of the lumpy running?

Thanks
Welcome 89 TPI

The PO. these are the "only" mods?
did they install 1.52 or 1.6 aftermarket rockers. Minimal lift gain approx up to .030
Aftermarket TBs are 52mm or 58mm no real difference.
Need a part number for the injector. ID the lbs/hr
If the PROM was not updated to match unknown INJ. Pulse width, lbs/ hr & related. This will create a AFR problem.
The rest of the components. Wires, FP, fuel pressure, plugs cap, rotor all in good working condition.?
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