I basically had a car doing the same thing. We changed out the temp sensor that goes back to the ecu and it ran a lot better. Then I got a variable ohm resister and put it inline with the temp sensor and was able to regulate the amount of fuel going thru the injectors and it ran great, plus it was fun to play with, but be careful not to run it too lean. If you need extra parts I have three complete intakes and afm, two complete cars, a built L28, two 4 speeds and need to sell it all, I don't have time to do anything with them. Pictures are on my webpage www.tcacars.net Hope this helps.