Help

I have an 87 iroc Camaro it has a 350tbi and the code 33 came up I’ve changed the MAF sensor and that kind of help with the rough idle but the check engine light for code 33 still there, the engine service light would go on off . Do these car have both MAF and MAP sensor?? Do I need to change the MAP sensor to??

 

Tbi In 87 ?
Tpi In 87 is maf. How many gps is idle to 1/4 throttle?

 

yes it’s was engine swap to a 350, what do u mean by gps?

 

What ecm are you using for the swap ? As far as I’m aware tbi didn’t come out until 88 f body.
tbi is map, tpi usb maf gps is grams per second. Any pictures of your engine ?

 

 

That is tpi Tuned Port Injection not tbi. It’s maf based not map.
look for vacuum leaks , rips in the bellows and a scanner to view grams per second would be useful.