Ok, so I just picked up my car from the dealership, I traded in my truck for it. Now I know that these cars claim to be 200+hp but for some reason it really does not feel like that at all. When I really step on it, the boost gauge is showing around 2.5 , does that make any sense at all?

This car is completely stock, its a 2007 cobalt ss/sc ... I was really expecting more, unless there might be a problem with it???? I had a stock neon that felt like it pulled harder and it only ran 15.7 on the 1/4...

any info would be greatly appreciated... thanks in advance.

 

well, something's effed up, you should be making atleast 10

 

my car pounded makes 12.5 stock. They dont call them the stealership for nothing

 

Mine too, 12.5lbs stock

 

wow, I am so not impressed at all right now, I knew something did not feel right at all.... damn it....

 

Take it back for sure. Is the CEL illuminated? As others have stated it should make 12.5 PSI or 85-90 KPA.

Joel

 

Cel ?? is that the engine light? There are no lights on that should not be on. I just called and spoke with them and I am going to bring the car back tomorrow so they can take a look at it... Does anyone know where its documented on how much boost they should be making?

Or is this just me? I ran 1st 2nd and 3rd gear up to around 5000 rpm, maybe a little higher , and still , the gauge would read just over 2psi and that was it......

 

yeah definitely get that checked out, should be around 12.5

 

Check if your boost bypass is stuck partly open.

 

Not good man. Sounds like a bad bypass. As stated, you should be boosting about 12.5 pounds. Definitely take it back to the dealer. Let us know what they say.

 

no offense, but you probably should have done more research before buying it? No factory boosted car makes that little boost...there would be no point.

Hope the dealership helps you out, but next time check everything out first...

 

None taken at all, I agree with you. I took it for a test drive prior to buying it but when I drove the car it was snowing, so I could not really get on the gas too hard. I did take it on the hi way and get it up to speed ( 60 mph ) and everything felt fine, the car was clean inside and out.

It was only today when I took the car home from the dealership around 6pm that I noticed anything, well it was actually when I got close to home, I was on the hiway and decided to punch it just to see what happens, I was not impressed at all, then did it again and looked at the boost gauge and thats when I noticed the problem.

I got home around 8pm and called the dealership and spoke with the guy who sold me the car, he instantly told me to bring the car back in the morning and the mechanic would take a look at it.

Thanks again for the info, I just needed a number to go in there with tomorrow ( the 12.5 psi )

As luck would have it, one of the other people that work at this dealership actually drives a ss/sc , so i will have someone to back me up on the numbers lol...

 

thats good, atleast they arent being dicks about it, definitely let us know how it pans out

 

Well i suppose that makes sense as to why you werent aware of its limited boost. I always forget...not everywhere has 80 degree winters, like us

GL w/ everything. Hopefully its something stupid.

 

well after almost a ten hour day the problem is finally solved. I took it to my dealership, they were unable to figure it out because they are not equiped for chevy's at all, so I had to take it down the street to another dealership. The car sat for almost 6 hours before they finally looked at it, it turned out to be something with a vacuum hose and some corroding around something on the bypass . I have the bill in my car but I am so worn out from today that I cant go up and get it lol


Thanks again for all the help, and let me tell you WOW, what a huge difference that makes now, the charger was actually not putting out any boost, now its hitting in the 80's car pulls nice and hard all the way through and loves melting the tires if I even think about doing it in first gear lol..

thanks again for all the help, really appreciated it.

 

Yep. Generally there isn't anything to leak boost other than the bypass valve on the SS/SC's. The stock SS/SC makes about 12.5PSI, while GM stage 2 makes 15PSI.

 

glad you got it sorted out

 

i hptuned my car(when it was stock) to max out @ only 4psi for ***** and gigs...prius's could have walked me no boost sucks hardcore

 

Twenty-seven pounds.

 

So whats the deal with these GM stage kits anyways? I keep reading all over these forums and people are talking about all the stages of mods and then having to get your car tuned for it.

what would you suggest for a newbie, I really know nothing about these cars at all right now, but I do know that I would love more boost and power Could someone give me a quick rundown of maybe price? vs results ?

 

Stage Kits...

Smaller Pulley
Larger Injectors
ECU Reflash

MORE HP

 

4006 psi's

 

Happy its fixed bro!