Would any problem occur if running a 2.8 pulley and 60# fuel injectors on a stock tune?

 

i dont think you can even run the car on 60# injectors without a tune.
but to answer your question no, you absolutely need a tune for the smaller pulley and larger injectors.

 

You need a tune.

 

Your car probaly wont even run or hardly, dont try it lol

 

?????? what's up with your mods list??????? Looks like you already have #60's and a 2.9?

but, to answer your Question NOOOOOOOO!!!!!

 

My engine blew so gm replaced it and in the process they also replaced the ecm with a stock one. Dealer tried replacing the fuel injectors with stock but the car just stalled. For some reason the car only runs with the 60# fuel injectors installed.

 

2.8/60 on stock tune...the car will start then die after a few seconds. Thats what happend to mine when i installed the injectors at my tuners shop.

 

Do not run anything but the stock injectors with the stock tune.

 

i drove to OTTP on 60s, a 2.6, meth, intake, header, DP, Exhaust, FMHE,DP,option B all on stock tune. Just a very rough . Its about 1.5 drive.

 

I ran 42# and 2.85" on a stock tune....
Dynoed it that way...
Dynoed like crap.
Sent dyno data and PCM in
Got Tune
Dyno and ran like