Hey guys. I had a USDM GSR swap in my car. It ran good for a little while. I decided to chip the ECU and got it chipped to run a USDM GSR with basic boltons, B16 Intake Cam, VTEC set at 5,000, etc. Anyway, when i put the motor the motor was put in the car (out of a gsr integra with 120k) we didnt do a timing belt and bent a valve. I have since went with a JDM GS-R long block. The car doesnt seem to be running as well as the other GS-R did. I’m wondering if its because the usdm gsr ECU is running it. I know theres a difference in compression, but would it make a noticeable difference? Do you think i’m running lean with this ECU?
EDIT: also, is it true that JDM ECUs are governed at around 118mph???