i just got my swap put in 2 days ago. i have a b16head on gsr block. the thing is i am using my stock piping and muffler. so my pipe is rattling and you can hear the leaks. i am also obd2 still. how much of a difference do you think when i finished my custom piping (2.25) and convert to obd1? thanks

 

lots

 

i'm running a gsr ecu....would it feel better with a b16???