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I have a 93 lt1 Camaro, which I think came with 22.5 lbs injectors. Everywhere I look for replacement injectors are selling 24 lbs, even for the 93. Is that a small enough difference that the ECU can compensate, or should I get a retune?
 

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Make sure you change your O2 sensor as well. As far as I know that's the stock size 24 lbs. But you maybe right in asking though.

Sent from my HP Pro Slate 8 using Tapatalk
 

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By movimg up to 24 lb injectors, you are increasing the amount of fuel that ecm will be giving engine. Ecm will try to compensate for the extra fuel, but engine will run richer than before. I would think a new tune chip for your ecm would be needed.

But since I'm not an expert on the subject, I will provide you with a link to a tuning expert. Salomon will have the answer. LT1 PCM Tuning - Welcome!
 
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