I'm trying to sort everything out on my car and got pcmforless tuning for 24lb injectors and I have a 93 with 22lbers. Longstory short I bought a bad set of 24lb injectors so I had to put the 22's back in. Any bad side effects from running them for a little while? Also how much performance loss?

 

Couldn't tell you exactly how much power you're losing, but your car runs leaner than it should right now. I wouldn't go wide open throttle too much. Just use the car for normal driving until you get a replacement set of 24s.

 

You've got an injector that is 12-13% smaller than the ECM is programmed for. The long term fuel corrections can add up to 25% extra fuel, to compensate for a lean condition. If your tune with the 24's was correct, it should be within the capabilities of the ECM to compensate for the 22's. If for some reason the ECM was struggling with the BLM's on the 24# tune, you could have a problem.