back fire???

[gmturbo]

I have a stock 87 GN. Everything is stock on the car except
injectors. At 70 mph when you lift you foot from the gas pedal
the car backfires a couple of times. This happens at no other
speed. I have flushed injectors. No trouble codes are present
I'm stuck at this point does any have any guidance on which
way to look

 

[scgnx]

Really need more info....What injector size ? If its more than #30lb's you need to have a chip programed for it. Do a search on Backfires on this board, you'll get a bunch of information that can help you.

 

[Kid with a toy]

Send "TurboGN" an e-mail. That way you guys can be pulling your hair out together since his car suffers from the same ailments as yours.

Erik