I have a 98 ls Integra with a gsr swap, I started the car leaving work and it sounded a little rough but it usually does at first, however the problem never went away. When I got out on the road it kinda stalled a little and had like 60hp and wouldnt rev over 3000 in any gear it was like a weird soft limiter. I checked the oil and put in a little, not the issue. I changed from my chipped obd1pobd1 ECU to the "stock" obd2 p72, nothing changed. There are no codes being thrown I'm at a loss here any ideas?

 

The car also does this weird thing when you try to start it where all power will shut off for a split second, not like when you engage it for the first time but midway through the starter running

 

Double check your grounds.

 

Yeah the guy I bought it from put the battery in the back and he only put the negative to the chassis in the trunk, do I need to run a negative all the way to the engine bay?

 

Checked every ground on the engine they're all fine, tried starting it again and blew the 250 amp fuse coming out of the battery
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sounds like you have a short in the positive battery relocation cable somewhere.

 

Alright so I got it fixed, turns out either something fell into the timing cover or the crank pos sensor bolt backed out. The CPS was in two pieces and even broke a tooth on the sensor wheel. The timing belt was holding on for dear life and slipped a couple of teeth. Luckily I didn't hit a valve and she's back up and running.