I agree, I had to learn the hard way and it sucks, Im pretty sure everything is ok, Im not beating on the car anymore, waiting to get a dyno tune

 

I'm sure someone down there has hptuners man, check on the RLF also, maybe someone can help you especially since you already have a tune to flash on, if anything maybe they'll just charge you the credits if they don't have the cobalts licensed

 

service limit is the lowest number allowed by gm before the engine needs to be rebuilt.

not sure what the number is, which is why i asked.

 

i think i have close to the same problem... my car got tuned today and my oil dip stick shot up about 4 inches and shot oil all over my engin.. what could that be from????

 

a blown engine... more than likely a a cracked ringland on a piston

 

or bent valve. sucking back in on the exhaust is a sign of this.

 

or stuck valve..

 

true

 

bent valve buddy... you done told me the answer with the paper trick... sucking in air means your exhaust valve is not closing... sorry