Going down to a 2.9 pulley until the Cobalt is paid off

Was going to get 50# injectors

Get the GM S2 Belt

Do I need the modulary pully system?
Over sized pulley?
Adjustable tensioner.

I E-mailed ZZP and I never received an answer just talks about future set up and what I should buy then.

 

Are you bone stock and you just want to pulpy down to 2.9?

 

I have-

S3 H/E
Injen Intake
Header
Downpipe
GMPP exhaust.

 

If you're buying from zzp, you need the modular pully system, the other two you do not need. You need a tune as well. New plugs arent a bad idea either. I'd suggest to just purchase a kit from zzp. Its not that expensive and the best idea yet. If you're still under warranty a GM certified stage 2 install isn't a horrible idea but a bit more expensive. Look around, some dealers do it for less.

 

You need S2 belt and injectors. That's all

 

correct me if im wrong, if you have an oversized tensioner you use your stock pulley belt, if you use your stock tensioner you get a GM genuine stage 2 belt?


could you use a stage 2 belt and over sized pulley tensioner?

going to be runnin a zzp 2.9 pulley also

 

If you get the oversize tensioner you use your stock belt. Note that the "stage 2" belt that ZZP gives you is a piece of crap. I only got about 6K miles out of mine before it started falling apart (I am not the only one to experience this). I highly recommend skipping this and buying a real GM Stage 2 belt.

 

i got the over sized tensioner from ZZP because what i heard about their belts fallin apart. was going to get a genuine stage 2 belt... but if i dont need it screw it. thanks for clarifying that up for me

 

Do u have the part number for the gm stage 2 belt?

 

Cobalt Stage 2 Belt 12597993

 

50s are ok but 60s will let you have more leeway...

 

thx.