Ok so I have a 91 camaro rs with a 350 swapped in it and it does in fact have a 350 tbi unit, the previous owner did the swap etc, all seems well except out of no where it doesn't want to run worth a crap, it won't idle it bucks and almost stalls out , supposely it was flashed for a 350 set up but I'm not sure any help would be awesome thanks

 

start trouble shooting just like a carb car. Fuel? good? pressure? filters? Spark? steady? no misses. Also check for codes. If all this is good then you delve more into the electronics trouble shooting.

 

Yes no codes, car was running like a top yesterday parked it and today went to crap