i have an 08 and my turbo's been whineing for a while now and my ecu blew last week and when i got it back i was only boosting 4 psi and it slowly lost boost now it just stayes at vacume so its sitting at the dealer now...

 

Yikes, sorry to hear that man. How long were you tuned before it happened? Also, what kind of boost was your setup running?

 

Are they going to cover it?

 

Damn that sucks. If they see that youre tuned that new turbo is coming out of pocket.. And for something like that i can almost guarantee you that they will check if the car was tuned

 

They shouldn't cover it and you'd have no right to expect it to be covered since it was modified, but hopefully if the turbo did go bad it was from a manufacturing defect in the turbocharger assembly and they'll take care of it, but if they come back and deny the warranty claim there's not really much you can say. Also did the computer die as a result of a reflash gone bad or suddenly died? Kind of odd that both those items would suddenly go out in such close timeframe.

Before getting too worried, it's hard to say if a whine is normal or not because the turbocharger will sound louder and different with an intake, but it is possible something is not working correctly in the wastegate control circuit. If you were really beating the car hard and had an aggressive tune it could be possible the turbo let go. I've seen a lot of people slamming on the upcoming GMPP upgrade kit for "only" producing 290 hp, but many people don't take into consideration the testing that goes along with power. For example they might be able to get even more out of it, but that might involve over-speeding the turbo to get that boost/power. On small turbochargers like the K04 that can dramatically increase shaft speeds and place a lot more loads on the already small bearings in the center section.

Most cars and turbos should live long, healthy lives with a reasonable aftermarket tune but there will always be the exception and that's something to keep in mind. Even the occasional bone stock may experience a failure. But if you really crank up the boost you will be affecting overall service life of powertrain components in a negative way and there's not many ways to get around that. It's just hard to say if everything will be fine for 50k miles or 5k miles...

Keep us posted on what you find out. Hopefully it's something simple and they can get you back on the road soon.

 

Hoping for the best for you. update us

 

good luck. waiting for updates

 

ya waitin for update

 

i agree with blackbird

guys on this forum are always about the highest hp they can get on the stocker. the gm tune and others may be a bit lower but it is the safe limit the general, who has to warranty it for 100k, feels the turbo can handle.

sometimes less is way more

 

look at all his past posts, it seems like it may be more than just the turbo going out. Its looks like a combination of a bad tune and going 160 and making vids of it.

 

hey this guy is my good friend.. with his tune he was boosting around 20 psi... one day he got in the car and nothing would happen. wouldnt start wouldnt even attempt.. got the ecu replaced and his car is running like ****. turbo probably is blown, but i havent spoken to or seen him since he took it back up.. the dealership had his car for a week before they replaced the ecu.. he keeps his stock tune file on hptuners so i put the stock tune on when he took it in for ecu.. he didnt even upload his heavy tune when he got it back. he had it for a day and it went right back to the shop.. he doesnt get on here very often, so if i hear anything ill try and update for him

even with a tune like that though, his car only has 18k miles.. it wasn't a super rough tune. he had his maxed out for a week maybe when he was boosting 24 psi, but he didnt wanna do any damage like this so he played around and set everything for a 20psi spike

 

A Bad tune + Hard driving can cause MAJOR problems. (He did post a video of going 160MPH) I imagine 22+ PSI was held for a long time. (That's a bit past what the turbo in the cobalt is designed for. Its over spinning.)

 

Oh i dont disagree with you at all. But with alot of the tunes out there, his tune isn't as hard as alot of the others. like i had said, he had it maxed out, boosting 24 for a few days, but he was too scared of something happening, and thats when he lowered all the levels and set a 20 spike. and for the 160 mph thing.. yea he is a little crazy.. but i cant say i havent done anything like that. i took my ss/sc to 145 and i still had alot of room to keep going.. just to scared, and i dont feel like dying and hurting other people in the process.

 

dude that really sucks but i DO know what your going throught turbo wise it really sucks and when i went to the dealer they said they had no idea when they could even get a turbo for me. luckily Hahn helped me out with my problem. Good luck to you

 

I love you SS guys.

1. You modify the car.
2. Drive the **** out of it
3. Break it.
4. POST THAT YOU KNOW YOU BROKE IT, Tell Everyone that you hope the dealer will pay for it.
5. Hope that the dealer does not read on the forum what you did to your car (They Do Read the Forums)
6. Tell everyone how bad of a dealer they are when they make you pay for the **** you broke.


LOL

 

you drive a protoge'.......... But I see what you mean, and totally second that notion. Lolz indeed

 

i agree thats why i never even tried to get mine coverd under warrenty it would have been a waist of time

 

how much did u pay for your Ko4?

 

I drive a Hugely Modified Protege, and I tried to buy the car with no warranty.

 

its all good, I had a miata with a GT2860RS, and had my kit built by corky bell (www.bellengineering.net). His book maximum boost is nice. I read your website, I don't hate protoge's I was just pointing that out. Here is my disco potato for proof (-=


Yeah and no warranty on the miata too. The new owner just threw a rod in it too.
And yeah I like your car for a protoge'

 

Hahn helped me out and i got it for $500. brand new throught the dealer is $1050 my cost and $1350 customer cost

 

this is why people like myself are waiting for the GM tune, doesn't mean if you abuse you car they will cover it, but you at least have a chance.... the creator of this topic has no chance, that is a hard part failure, the district manager will be called, the car will be gone over with a fine tooth comb looking for problems, they will see the ECM has been flashed, even in going back to stock, they can still tell... he'll be paying out of pocket or have it towed from the dealer

 

Thats a blanket statement that doesn't fit! Thats like saying just because you drive a "asian made" car that I would say you are typical ricer. Are you? probably not, but you don't here me running around saying that. Maybe you should not come to COBALTSS.NET and say that. Thats all I am getting at.

 

A stock SS\SC will only do 140-143... (not governed) I've driven them flat out on GM's proving grounds... You'd need about 255-265 crank hp, up from the stock 205 hp to hit 160 in a SS\SC.... You must have had lots of mods and mucho hp to feel ytou had a lot more left....

I doubt the turbo is bad.. he needs to check the codes before the dlr does....

I'll bet your car does not like that Lightweight flywheel....

 

I'll bet your car does not like that Lightweight flywheel....[/QUOTE]

The only issue I can foresee with a lightweight flywheel is a greater tendency for the car to stall when easing off the line. Other than that I see no problems with a lightweight flywheel. Car should rev a little faster with the lighter flywheel.