This is an LS swap in a 91 Corvette.
built/forged 5.3 347 iron block with 241 heads
237/242, .603"/.609", 113 LSA
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.