First off, I like that this tuner appears to be pretty straight forward in how it operates as well as it's ability to return to stock at any time.

But I have a few questions about it if any of you guys know the answers...



Can the dealer detect that the car has been tuned even if you return it back to stock?

Every month, Onstar emails one of those vehicle diagnostic reports. Would it detect the tune and report that something is wrong?

Are there any other downloadable tunes or only the one that the PPC comes with?

What kind of results are you getting with yours? Any problems? Drivability affected in any way? Clutch slip?

Finally, what kind of trap speeds are you guys getting in the 1/4 on stock tires with this tune?

Thanks.

 

Welcome to the forum. Do a search by clicking the "search" button near the top right of the screen.

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https://www.cobaltss.net/forums/2-0l-lnf-performance-tech-153/just-programmed-my-car-hahns-ppc-128418/

 

I'm sure they can but probably won't unless given reason to look specifically for it.

I don't use that feature of Onstar. However, I did call them once when my ESC was screwing up. They said nothing about it.

There are not any downloadable tunes. The PPC can be updated but more likely it's just a firmware upgrade.

Boost goes to 21-22 psi and holds. Throttle response is quite a bit better. Under WOT 1st gear is a joke. (street tires) Part throttle recommended. WOT from a roll in 2nd will many many many times also break traction but holds enough grip to just hold it WOT anyway. No clutch slip here.

Haven't taken mine to the track yet. Hahn's got a 13.5 I believe with the tune and exhaust. So mid 13's can be expected if you can drive.