MODS with GM1 Tune
#1
New Member
Thread Starter
MODS with GM1 Tune
Hello,
How far can you go modification wise if your 09 Coballt SS already has the GM1 tune ?
Could you add a Cold Air Intake ??
Could you add a Cold Air Intake and a Charge Pipe ???
Or could you add a Cold Air Intake, a Charge Pipe and a High Flow Cat ????
At what point would the engine start running Too Lean because I believe the GM1 tune will Not adjust for the additional air flow, correct ?????
Thanks for any help,
Jeff
How far can you go modification wise if your 09 Coballt SS already has the GM1 tune ?
Could you add a Cold Air Intake ??
Could you add a Cold Air Intake and a Charge Pipe ???
Or could you add a Cold Air Intake, a Charge Pipe and a High Flow Cat ????
At what point would the engine start running Too Lean because I believe the GM1 tune will Not adjust for the additional air flow, correct ?????
Thanks for any help,
Jeff
#2
Senior Member
Hello,
How far can you go modification wise if your 09 Coballt SS already has the GM1 tune ?
Could you add a Cold Air Intake ??
Could you add a Cold Air Intake and a Charge Pipe ???
Or could you add a Cold Air Intake, a Charge Pipe and a High Flow Cat ????
At what point would the engine start running Too Lean because I believe the GM1 tune will Not adjust for the additional air flow, correct ?????
Thanks for any help,
Jeff
How far can you go modification wise if your 09 Coballt SS already has the GM1 tune ?
Could you add a Cold Air Intake ??
Could you add a Cold Air Intake and a Charge Pipe ???
Or could you add a Cold Air Intake, a Charge Pipe and a High Flow Cat ????
At what point would the engine start running Too Lean because I believe the GM1 tune will Not adjust for the additional air flow, correct ?????
Thanks for any help,
Jeff
#3
Senior Member
I didn't have any problems with a catless dp and an intake on gms1. Ran the same .95-.88 lambda with the mods. STFT is all over the place too.
Also It might be better to get a tune + dp instead of the other stuff. Plus do the vacuum tank delete to save your upper ic pipe and your intercooler.
Also It might be better to get a tune + dp instead of the other stuff. Plus do the vacuum tank delete to save your upper ic pipe and your intercooler.
#4
Senior Member
I didn't have any problems with a catless dp and an intake on gms1. Ran the same .95-.88 lambda with the mods. STFT is all over the place too.
Also It might be better to get a tune + dp instead of the other stuff. Plus do the vacuum tank delete to save your upper ic pipe and your intercooler.
Also It might be better to get a tune + dp instead of the other stuff. Plus do the vacuum tank delete to save your upper ic pipe and your intercooler.
#6
Senior Member
HAHAHAHA look me up!!!!!
#9
Last year at VIR my intercooler pipe split at the seam so I had to replace it with ZZP piping on the stock intercooler. Are you saying that a GMS1 tune shouldn't be run with this piping in place?
#11
Senior Member
Any time you increase the flow it will throw the trims off. I helped a guy with his idle because he had an intercooler on Stg1 and the trims were way off set them and it idled great he said
#12
New Member
Thread Starter
So are you saying with my GM1 tune that my trims are out due to the intercooler upgrade ?
If not, is the only other upgrade I could do be a high flow catted downpipe ??
Thanks.
#13
Senior Member
I had to replace my stock intercooler a while back thanks to a raccoon. I upgraded to ZZP's smaller version. The only other things done are the stock air cleaner air horn mod from this site and ZZP upgraded intake tube.
So are you saying with my GM1 tune that my trims are out due to the intercooler upgrade ?
If not, is the only other upgrade I could do be a high flow catted downpipe ??
Thanks.
So are you saying with my GM1 tune that my trims are out due to the intercooler upgrade ?
If not, is the only other upgrade I could do be a high flow catted downpipe ??
Thanks.
#14
New Member
Thread Starter
#15
Senior Member
I personally saw a nice gain by switching intercoolers and thats why it thows the trims off because of the increased flow. I would watch knock because with bad trims that can happen and eventually get a tune to get those trims dialed
#16
New Member
Thread Starter
Thanks
#17
Senior Member
No you'd be making a tiny bit more I'd guess but our car runs off of the wideband o2 so having bad trims could reault in knock then you'll have a power loss without knock you should be ok
#18
New Member
Thread Starter
So you said earlier that the only other mod that I could get away with would be a high flow catted downpipe. Would this still be the case with the upgraded intercooler or no ? Would I be pushing my luck and likely start losing power or at very least, not gain anything ??
#19
Senior Member
So you said earlier that the only other mod that I could get away with would be a high flow catted downpipe. Would this still be the case with the upgraded intercooler or no ? Would I be pushing my luck and likely start losing power or at very least, not gain anything ??
#20
Senior Member
iTrader: (1)
If for some underestimated reason changing the charge pipe (diameter/length) increases or decreases airflow, it will be captured and adjusted via the MAPs.
You will see no change in fuel trims. The intake is the only player in running lean or rich as far as bolt ons go, not including turbo swaps as bolt ons.
#21
Senior Member
iTrader: (1)
The only time a fuel trim has been off after installing an intercooler or a charge pipe is because of a boost leak / bad install.
#22
Senior Member
I think my input is probably more beneficial that anyone in here on this particular situation. Changing the charge pipe is fine, changing an Intercooler is fine, It wont change a thing. Airflow is measured at the MAF (intake), air pressure is measured at the MAPs (lower charge pipe, and Intake manifold).
If for some underestimated reason changing the charge pipe (diameter/length) increases or decreases airflow, it will be captured and adjusted via the MAPs.
You will see no change in fuel trims. The intake is the only player in running lean or rich as far as bolt ons go, not including turbo swaps as bolt ons.
If for some underestimated reason changing the charge pipe (diameter/length) increases or decreases airflow, it will be captured and adjusted via the MAPs.
You will see no change in fuel trims. The intake is the only player in running lean or rich as far as bolt ons go, not including turbo swaps as bolt ons.
#23
Senior Member
I have yet to see an intercooler produced for the cobalt that has thrown off fuel trims. If you really need to know, I would email ZZP and ask them the question directly. They would have information in their product info section saying a tune is needed with this modification.
The only time a fuel trim has been off after installing an intercooler or a charge pipe is because of a boost leak / bad install.
The only time a fuel trim has been off after installing an intercooler or a charge pipe is because of a boost leak / bad install.
#24
Senior Member
iTrader: (1)
dude Ive ran an after market IC and charge piping on the factory tune for 2 years before I ever got a tune and there was 0 change in my trims from OEM and aftermarket IC/charge piping. Charge piping and IC just moves charged air and cools it to ambient. Im speaking from experience here. If you have fuel trim creep, more than likely theres a leak.
To this day I swap between my factory tune and my HPtune. no problem.
To this day I swap between my factory tune and my HPtune. no problem.
#25
Senior Member
dude Ive ran an after market IC and charge piping on the factory tune for 2 years before I ever got a tune and there was 0 change in my trims from OEM and aftermarket IC/charge piping. Charge piping and IC just moves charged air and cools it to ambient. Im speaking from experience here. If you have fuel trim creep, more than likely theres a leak.
To this day I swap between my factory tune and my HPtune. no problem.
To this day I swap between my factory tune and my HPtune. no problem.