Hello, Im new to the fourm and hopefully soon Ill be new to the Cobalt SS Family.
I live in Canada and my Local Dealer has an 06 SS/SC that I am interested in (Ultra silver, with out the recaro or lsd)
I have some questions first, I Have searched the forms (Briefly), But I cant find the info I want.
so Here goes my questions, Hope you guys can help me out, Sorry so many questions.

Stock Boost Psi, Ive heard 6 ive heard 8 psi, when I took it out for a test drive, the boost gauge didnt work ? for some odd reason ?

Stock WHP, they Claim 205, But ive heard they are actually putting that down to the wheels in stock trim, true ?

Fuel Milage, with a SC engine, I dont expect to get the milage of a honda civic, but logically, driving concervitavly, what kind of MPG can I expect, The dealer tells me 28-34, but for some reason I dont want to beleive him

and last, Upgrades, such as lowering springs, and performance upgrades, I know they are out there, but are they somewhat cost efficant ?, I realize power = money, but is there cheaper things us new owners can do to get a little more out of our cars with out affecting the warrenty ?


thats it for now, hopefully I can get some specific answers here.
Thanks

Stephen

 

Some people are actually dynoing at around 220 stock WHP.

The supercharger goes up to 12.5 psi and it is easily upgradeable with just buying a pully.

As for the fuel mileage this was one of my highway trips

 

Stock psi is 10 until you pass the break in period. After that I think its 12.5. The boost gauge only works when you are at wide open throttle since that is the only time the supercharger engages. Its a fuel saving thing.

You might want to watch this for a better understanding: http://www.cobaltss.org/media/2.0-Ecotec.wmv

Yes its true. I've seen ~215whp posted so far. Thats roughly 230 @ the flywheel.

The dealer is just about right. Some people have reported hitting as high as 41mpg, but that is just crazy. lol I'd realistically expect something like 21 if you drive it hard, and perhaps that 28-34 if you take it easy.

There are not many quick, easy, and cheap solutions out there. Not if you want any noticable difference anyway. Have a look around the How To section. Youre bound to find something to do for little $$$.

Disclaimer: I might not be 100% correct with my answers, so dont take them as such. :P

 

Ill try to answer your questions as much as I can.. (anyone feel free to correct me if i goof)

Stock boost level....Our computers are restricted to 12.5 Psi which works to be around 80KPA on our guages, as far as the fact it wasnt working no idea make sure you mention that for sure mine worked "outta the box"


Horsepower expect to see around 200 to 215 at the wheels search the forumns you will find plenty of dynos sheets to see for yourself lots of stock dynos, but vary depending on the "type" of dyno used..


Fuel milage i get around 10.5L/100km in the city and around 8.5-9.5 on the highway not sure what the translation is to MPG but you might be able to figure it out

As far as upgrades are concerned there are PLENTY of parts now available for the cobalts, search the supporting vendors websites lots of great deals, Pretty much all major suppliers make parts for the cobalt...Warrenty your best bet would be the GM STAGE UPGRADES (search the forumns for more info) this is supported by GM and does not void the warrranty can get some pretty nice power out of these upgrades

Most parts are competitively priced but do to some availabilty issues and the fact that it is still kinda a new car you might fine some things to be expensive, but its worth it these cars are a hoot to drive you will enjoy it trust me!!

 

Thanks for the quick responces.

about the boost gauge, when I took it for my test drive, it didnt move, didnt even flicker.
from start up to normal driving to a quick shot of full throttle, nothing.
dont ask me why, I should have mentioned it to the dealer, but I was to busy trying to hagle a price

 

Mileage for some reason on my car, I am only at 24.4 MPG after 3 months of owning the car. I don't race, don't speed, I do however mostly go on short driving trips under a few miles. Maybe thats why, that and I only have 1600 miles on it in three months. My MPG is going up very slowly but at this rate, I may reach 28 MPG in a year.

 

You have to get on it to get the Supercharger to kick in. The boost gauge won't read until you're accellerating hard and the SuperCharger is kicks in.

 

I think the dealer sets the guage upon purchase, I thought I read this somewhere so do not quote me

 

So I went for another drive today, I think im gonna go for it.
theres nothing i dont like about the car, other then Im nervous about the fuel comsumption, but with a car like that, it can only be expected that its not gonna be great.

one last question, the SC, is it just a quiet operating unit ? or am I simply hard of hearing, I went to wide open throttle a few times, and I never heard a thing.

 

Maybe the supercharger isn't working on that car...If he isn't hearing it and doesn't see the boost guage moving...just a thought....

 

I just picked up my SS on Wednesday and the Supercharger was very quiet until I installed the CAI. I can hear it much better now, which I like.

 

yah know, I really thought that myself, but I concluded that it would be very unlikley.
with the boost gauge not working at all, no noise at all ( except for the exhaust note, which I liked) , and me not thinking the car pulled very well, I dont know what to think.
dont get me wrong, the car worked very very well and I loved everything about it, but a part of me expected more and expected it to have a little more "kick".
There is no other cobalts in my area to compair it to so im unsure what to do or think..
my dealer is a bunch of Slackers, when I first went there to inquire about the car, he kept telling me it was Turbocharged, after 45 mins of talking about the car and me constantly correcting him that it was supercharged, I think asking them for advice or info would be a bad idea and a waste of time.

 

Test drive one of another color and see what you think. The car pull's plenty hard for a 2.0.

 

unfortunatly, there is only the one there, im going to check the next nearest dealer, see what they have

 

mine reads every moment...even when the cruise control compensates a little to go up a hill and i boost 3-4 psi...and my supercharger is always being used, even when its not open throttle...i have to give it almost no gas to not use it

 

That is how I thought they worked, beeing ran by a belt off the crank and it always spinning, I always thought the SC was always in use so to speak.
the more throttle, the harder it worked.
and when off the throttle it would run off vaccum ? on the throttle it builds boost ?

 

this is my first post, and I will post next in the intro thread (soon as I find it) but this is the first post I came to.

The superchargers on the SS is "always" on as it is belt driven off the crankshaft of the motor. In order for it to not work, you must shut the car off. The supercharger is always compressing the air, always forcing air into the engine, whether you are at WOT or not. Under full throttle, and over 4k rpm, you should really see the boost pressure rise. While your not using much just cruising around, you are still using boost.

-Mike

 

good explanation big mike, thanks, I did some reading on it myself, and what you say seems to be accurate, I am going back to the dealer tomomomrw to see what they have to say about it, and take it for yet another drive, If I am going to spend 25 thousand dollors I have to be sure I am going to be happy with it.

one other thing, A just seen an advertisment for a GM 72 hour sale, 0% over 72 months ?
over tomorrow apprently, does anyone know if this is just an american deal, or is it offered to us canadians to ?

 

you can take over my lease LOL !!!

 

how much ? lol jk

 

It sounds like it's definetly a problem with the supercharger if you don't hear it and the guage isn't working. It should be reading all the time because a supercharger is always building boost. A turbo doesn't always build boost. You should definetly feel it pull...

 

well, I just went for another drive, no noise, no gauge...
I was in a dead silent area and all that could be heard was exhaust, so I went back to the dealer and told him my concerns, right away they took the car into the service bays and told me to hang around for a few minutes untill they diognose the problems.
15 minutes later the service manager comes out and asks me if I could come back tomorrow, I asked if there was a problem and he replied with "were not sure"...

Wow.....

 

so get this, the dealer called me today, informing me that the silver car "cant" be sold. I asked why and they said simply "mechanical failure".
I asked for specifics but he would not give me any.
he says they have another silver one along with a black one on transport this week and they should be arriving soon.

Im going to go over there tomorrow, see if I can find out what went wrong with the silver one. like I say, my dealer seems to be a little slack to say the least, so it should be interesting to see what they have to say.
im glad I didnt go ahead and buy it right away

 

check you private messages

its a good deal

 

so you gonna pick the silver one again or the black one this time???