I’ve gots a 1989 2.3 that’s bored 30 over, block and head have been milled down, I’ve put a jet performance chip in it, exhaust system is straight pipe with a muffler no catalytic converter. I tried to get the machine shop to put an aftermarket cam in but he said it wouldn’t run right without figuring out how to tune it. My question is how do you go about tuning it right since it’s EFI? I had a 1983 yoda bored 30 over with a mid range cam and a Weber carburetor and it ran Perty good. Trying...

1989 2.3 ranger