ty07scss

so current mods are
injen cai
magnaflow hiflow dp
catback magnaflow
stage 2 gmpp

so i was curious...planning on getting a tune but wanted to just put the pulley on for now.....
would i mess up anything? and would i feel any gain for the time being or would the stage 2 tune mess stuff up and/or not feel any difference?
thanks guys

383_Stroker

iTrader: (3)

Some will tell you it's a terrible idea.. some will tell you they've had their car that way for two years with no problems..

Personally, I wouldn't run it without a tune..

1fastSSBalt

iTrader: (4)

I'm not sure what the Stage 2 Gmpp kit includes, but cooling mods would be a good idea and I would get a tune imo

Stone629

iTrader: (2)

Don't run that pulley without a tune.

ty07scss

i have a ottp heat exchanger i believe is the brand. but the question is if i were to run it for a week (and not baby it) would it be ok? do have the h/e any other sugested cooling mods or should i be good?
thankful for your guys imput. thanks for helping me out

btw....
imo?

defo98

iTrader: (1)

what injectors do you have?

07BoostedG5

iTrader: (12)

tune it

metalmedic

iTrader: (4)

Gm stage 2 comes with 42lb injectors and a 3 in pulley ( I think )

ty07scss

42's

defo98

iTrader: (1)

your gunna need a custome tune to run the 2.85 with 42's

BoostedYards86

i would not run anything less than a 2.9 with 42# injectors. just my opinion. i know many that have gone smaller but i do not like the idc any higher than what you see with the 2.9

metalmedic

iTrader: (4)

As far as cooling mods dual end plate (zzp $85) and option b (zzp $115???) The more cooling mods u have the better.... ur car will be able to handle a more aggressive tune.... but I would say don't put the pulley on till right before u get tuned....good luck

alleycat58

I wouldn't run that on the stage 2 injectors personally and DEFINITELY wouldn't swap it on without a tune.

BoostedYards86

you could run a 2.9 pulley on the stage 2 tune just fine... but anything smaller u need injectors and tune...

ty07scss

thanks

boost_junkie16

iTrader: (1)

Get 60's and a tune.. Or you'll end up like me
https://www.cobaltss.net/forums/cana...engine-242380/

ty07scss

omg ..... please not for mine!
well i will be sure to tell him maintain some reliability and not go full agression.
if i maintain 2.85 pulley with 42's and dont do a super aggressive tune will i be fine?
i dont wanna be that guy ^^^^ sorry to hear that. but ill learn from your mistake

Dr.Balt407

for a 2.8 you need a tune and at least 60's. if you cant get the bigger injectors just wait and save yourself.

defo98

iTrader: (1)

get the 60's. its worth it to spend the $100 for them then buying a new motor after it blows on 42's.

BoostedYards86

60's and 2.8 or 2.9 and let it ride.

ty07scss

someone wanna find me some 60's and prevent me from blowing it?
to the person who does find me some karma will find you

ty07scss

and my conclusion....if i put a 2.85 on with 42s....even without an aggresive tune im most likely bound to blow it? this was gonna be my last mod (pulley and tune) then was just gonna let the car be until i sell it after the loans paid off.

boost_junkie16

iTrader: (1)

What are you running for cooling mods?

srt-10

ask boost junkie what happends when u put 2.85 pulley on gm stage 2 kit. Your injectors are static, if not close to it, it cant handle a drop in pulley size, you would need 60's and a retune.

ty07scss

cooling mods are a front mount h/e...ottp i believe. and so 42s will be maxed out on a 2.85? reguardless of how agressive or passive the tune? sucks i have to spend more money....but i know i gotta pay to play with this damn "hobby" lol