What would a new 350 tpi prom for a MAF system run from GM? Just trying to get an Idea. The guys at my local parts department don't know what I'm talking about.

 

What year? Vats?

https://www.thirdgen.org/camaro-tpi-...cation-numbers
https://www.thirdgen.org/firebird-tp...cation-numbers

Depending on the dealer, $50-80

 

I haven't checked to see whats still available in a few months, but GM has been discontinuing PROMs left and right. If its still available, its because they have not run out of stock yet. Alot of their more popular calibrations are already discontinued. Some, like AUJP (90-92 350) have skyrocketed in pricing. GM List on that one went up about 60% recently. Chances are, GM doesn't have many left on hand.

 

I just ordered a prom from a GMpartsdirect.com. I ordered 16068654. From what I understand It is a non VATS prom.. Dose this sound right? From the Prom number list that you posted, it says its for a 87 5.7. I'm using a MAF from an 88 so that should work fine.

I'm more worried that it will be a non VATS prom.