Alright i see that cobalt addiction states there 2.79 pulley is the perfect pulley for the stg 2 cobalt now i know that isnt true without cooling mods etc, why do they say this?

 

I had once the same question. This is the answer from CA, Kenny.

Cobalt Addiction Kenny
to me

You don't need the tensioner.
The stage 2 program is rich enough to run the 2.8" pulley in warm weather. You do not need the tensioner for the 2.79"
Thank you ,
Kenny

 

what about injectors and cooling mods? lol

 

A few people are running the 2.79 pulley with 42's. You'll need a good tuned. Or you can go with 60's just to be safe. Or go with a return-fuel system, which is my route. For cooling, you should install a dual-pass endplate with option B. Or go with meth.

 

meh i dont want to do all that, i was just wondering why they said its completely fine to use it on a stg 2 tune

 

From your sig, it seems you need already cooling mods since your running a 2.9" pulley.

 

2.9 is the smallest i hear you can go w/o cooling mods, im gonna do the dual-pass after c/a header and wideband

 

No, the smallest is 3.06", which is the pulley that comes with GM stage 2. Below that you need cooling mods.

 

i dont know. i have heard a 2.9 is safe to use without coling mods im running the same cooling temps i was before i installed the pulleu