My 91 that I picked up earlier this week is running real rich to the point that it seems to be choking itself out. When driving it doesn't seem to bad but, when sitting idle it nearly chokes itself out. Real rough idle. I am thinking the guy that had it before me that did the B20 swap put in the wrong injectors causing it to spray too much fuel into the engine or just didn't tune the engine to compensate for larger injectors. Anyone have any ideas of what might be causing my issue or do you think that I might be on the right track?

 

What ECU are you running????

 

I will have to look and see because, the guy I got it from surprise surprise doesn't know... Hopefully they changed it when they put in the new motor but, I am not holding my breath.