This is an LS swap in a 91 Corvette.
specs:
built/forged 5.3 347 iron block with 241 heads
MS3 cam
237/242, .603"/.609", 113 LSA
LS6 Intake
Wiring harness and PCM from a 99 Z28
The veh goes in and out of open loop at idle and the KPA is in the 90s all the time.
This is my first post and Im no tuner so please be kind. Any help would be appreciated.
Large Vacuum leak?
Would that also cause the VEH to go in and out of closed loop? My brakes also feel pretty hard. Maybe the booster or line is leaking. I need to take a good look at the intake too this engine has been in and out of 3 cars maybe it got cracked?Originally Posted by Midnite Magic
yes it would.
Post a log (idle pids) and tune but sure sounds like a vac. leak.
I will ask my tuner to post one. I will also start looking for that vac leak. Thanks for the help so far guys.
I found my leak. I was looking for cracks on the backside of the intake and found a nipple that I did not know existed.. I feel like an idiot.
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