as far as i know there is only one tune which is for the gm st2. with everything i got done to my car i get 26 mpg according to the car.

 

thought i was alone

 

make girls wet then can't wait to get my on

 

makes girls wet huh?

*clicks buy button on CED.com furiously*



Fuel mileage is better with Stage 2 or Stage 1? HELP

 

i cannot hate on stage2... sence i am currently stock... though i just got my ss/sc a couple months ago... i cant see why every does stage2?... like i said im not hating... i love the cobalts, but damn what is it about stage 2?.... i mean we have a choice of stages up to stage 6... im sorry but for 16000 dollers and a hell of a lot more whp and lbs i gotta save up for the stage 6... if anyone can give me a reason not to do so please do so... before i ? waist my money?... otherwise ill just stage 2 it... or stage 3 or 4..5?

$1600 ... sorry its late and im tired... night nights

 

i think the stage 2 is common because its cheap effective and doesnt void warrenty, i like to drive my car to work (no choice), but i also like to line my car up against a 5.0L and make em sweat and any thing higher than stage 2 isnt street legal, not that it matters in most cases

 

Warranty...

 

yup stage one and two tunes are the same... only diff is the pulley and stuff for stage 2

 

thats awsome man i have the same plus exhast on my cobalt and she goes like hell

 

is it possible for the cpu to re-flash it's self??? Because when I first drove my stage2, I was getting around 70 mph in second gear, and 110 in 3rd, and now after a few miles, I'm getting about 60mph in second, and 90-95 or so in third. Any ideas???

 

weather and temp?

 

I know. I thought of that too, and it was cooler when I ran faster. But I don't think it would make that much of a diff... would it? Not 10-15 mph? Or do you think it could?

 

??? possibly when we did the dyno tune the car with the least mods that went last in the day (car cooled down all day and it was cooler temp wise) and it made the most power on the dyno. but to answer if it makes that much of a difference i really dont know was boost levels the same?

 

ya. They were. around 15-15.5

 

what size is gmpp stage3 pulley it shouldfit with no issues

i hear you can use the stage 3 pulley with the stage 2 gm tune cause the stage 2 tune is rich anyway but how much boost does the stage 3 pulley give you they say it will work with the stage 2 belt and the stage 2 injectors

 

stage 3 is a 2.9.
You can use a stage 3 pulley on a stage 2 tune. BUT there is alot of debate on what im about to say so im suiting up the flame suit now. The debate is stage 2 tune is rich blah blah and theres no problems running the s3 pulley. now from PERSONAL EXPERIENCE I had fuel down low, but up top around 5,000 RPMs I leaned out like a ****. Injectors couldnt do anything for me from 5-7k. So I had to upgrade to 60s. Now some people say its fine, some say its not. Im sure theres many variables too such as intake, exhaust etc. but that is my personal experience.

 

well sounds like i need #60 injectors i have injen cai gmpp performance catback i also heard i would need a intercooler end plate and a second sergtank i heard you could use a cobra heat exchanger but what all would you do to install it i want to install2.7 pulley

 

if you want to instal a 2.7 inch pulley its pretty much a must to get some cooling mods. a dual pass plate would be great, but screw the cobra heat exchanger, look up cx racing on ebay. for about 200 you can get a bigger intercooler and hardware.

 

quick question, it may have already been answered but im not scrolling through all of the pages in this post, but im reading up on the GM stage 3 kit and i keep comming across this surge tank, what is the surge tank and what does it do?

 

search button for the win, its an overflow tank for the dual pass intercooler setup.

 

yes i get that, but what does it do?

 

search button search

 

I've got a good one.
2 weeks ago I got my stg2. It worked fine for 3 days, then my cruise control stopped working and my spedometer fell off by approximately 10%. The power of the stage 2 is still there, my car runs fine, boost is fine, rpm are where they should be, but the spedometer is off. I've had it at the local GM dealer where I had the stage 2 installed for about a week off and on. They are unable to fix the problem. First they replaced the computer, that didn't work. Then they said they needed to get a new calibration, that didn't work. Then they said they need to call in a GM engineer. After he looked at the car he said that I have to put the stock air box back on and remove my cold air intake. I told him he's full of ****. Anybody else encountered this problem? Any help would be much appreciated. I'll even pay you for it, lol. Help!

 

speed sensor?

 

Thats exactly what it was. I had to take it to a different dealer who found it the same day. The origional dealer had my car for six days.