'93 LO5 Backfires thru Headers
07-07-2014, 03:28 PM
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'93 LO5 Backfires thru Headers
This is starting to stump me. Just put my stock LO5 back in the car. Only changes were an L98 cam, 70lb injectors and headers. Timing is dead on 0 at TDC. With the ESC unplugged per the FSM it idles and revs great. Soon as it's plugged back in it backfires out the exhaust. I had a rich condition when we first started running so the plugs are a bit dark. Should I try a different set?
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