I just installed nates 2.9, im seeing 15lbs of boost on the gauge at lower rpms that i used to but im not boosting the 17 psi i thought i would. meh it looks nice. easy install if you have a strap wrench took 10 mins. i would reccomend it.

i just wish i could hear it over my loud obnoxious exhaust

 

You lost boost??? Hmmm that don't sound right...

 

i didnt loose boost, the car was hitting 15 at redline now it hits 15 at like 5grand

 

exactly...im seein 15psi at about 4500-5000k and by 6800 im at 17.5-18.0 psi..pulls like a champ

 

by 6800 im only seeing 15 hmmmm maybe because its humid as a mother here, or i dont know i'll tell you when i install my intake later.

one thing, i decided to not use the stage 2 bolts, and i bought nates but he never sent them to me so i used bolts i have in some kit at my house with lock washers. looks good and i used loctite just incase they got loose and fall off. anyone ever do this?

 

Do you get any belt slip with the 2.9 with the stage 2 belt? Or did you buy a new belt?

 

it dosent seem like im getting any belt slip. im just using the stock stg 2 belt

 

Mine is doing the same thing, I am only seeing 15psi as well, it hits immediatley but thats all the boost I get. I was expecting at least 16psi. w/ the 2.9

 

same...

 

intake and exhaust mods, along with a few other things will alter your boost.
also hot weather will definately affect it.

your not going to see the same boost as everyone else.
15psi on stage 2 is in fact not "normal" sure thats what its rated at....
but most people will generally be a little lower or higher than that depending on their mods and conditions.

Similarly with the 2.9, math might say 16lbs....but theres alot more to it.

 

meh i guess if it wasnt humid as **** and hot as **** i may see more boost. until i can get hptuners tune i'll live with it lol

 

take it out on a colder night and i bet you will hit close to 20psi

 

too bad there arent too many cold nights here in south florida. the coldest it will get is mid 50's and that in like dec lol

 

well, I am in Saskatchewan and we do get colder nights lol. Still, only 15psi of boost. Outside it was only 6 deg. C. last night. I did notice before that the Stage 2 tune for 07 Cobalt SS will bleed your boost to 80%, fixed this with HPT and still only 15 psi. Oh well, after the adj. to the stage 2 tune the car pulls way harder.