I want to buy a 3" pulley for my cobalt ss/sc but i need to know if its safe to run it on stock injectors with no tune. I will be getting my magnaflow exhaust before the pulley as well. Will my car throw a cel and will it run fine because i dont want any problems wiht a brand new car. Thanks, Brandon.

 

its not technically safe since it will throw your injector duty cycle well over 100%. which means you run the risk of having the injectors fail. though many people have gotten away with it for a while...

 

I don't even think the stock pulley on the stock injectors is 100% safe. lol

 

iv been running a 2.9 for over a year , with intake no probs at all cars pullin close to 16 lbs too

 

ran that setup for one year +

 

I see so its not great but can be done. I'm not the kind of person who floors there car all the time. I only do so when racing or when i just feel that urge to get on it. Otherwise with gas prices on the rise i keep those urges down thanks guys. Anymore suggestions?

 

you know i always wanted to get my car checked out. im sure there is a few problems, any one want to check it out

 

Floor It Always!!!!!

 

Yea idk if theres anyone in rhode island around here that i know of who has hptuners.

 

I ran a 3 inch pulley for a couple months. No problems. I have a 2004 redline.

 

I havent heard any problems from running just a 3" pullie. But it is a fact that a completely stock ss/sc is over 100% idc. I live in south florida so my air is more dense hense higher idc(technically) and I havent heard of any failure or had any problems myself on my stock pullie and injector ss/sc.

 

see, this is what frustrates me about this board, you can;t get a concrete answer. i posted the exact same question a month ago, and everyone said it was a bad idea, that it was the ghetto way of modding and so on. and now in this thread people actually speak up and say they;ve done it and it works well, yet in my thread everyone says diffrent.

https://www.cobaltss.net/forums/2-0l-lsj-performance-tech-47/simple-question-hoping-simple-answer-52258/

 

that is true man and as much as i would like a straight answer there really isnt one. Its a win win or lose lose situation. I guess i have to try it and if all fails i wasted 200 so i will go back to stock.

 

this setup is fine with 1 or 2 step colder plugs on 91 octane.

 

I run it on a daily basis its fine but you get fuel cut out early in 1st once and a while and almost always in second around 6250rpm so you just have to shift a little early. 300rpm wooo! third and fourth are fine to redline. 15-16 psi do it!

 

I see not that big of a deal worst comes to worst i switch back.