Reduced power CAMARO 2010 HELP!

[igorsm]

Hello.

I have tried everything on a customers car (2010 Camaro SS A6 L99) with no success.

Power reduced mode pops up everytime at WOT/wheelspin/kickdown.

I have disabled everything that may cause it, but - no luck.
Car runs very good, except power reduced. This is an almost done tune.
Car has 427 cid fully built naturally aspirated LS3 without VVT, AFM, DoD.

No vacuum leaks, all sensors work, ignition works.

Maybe this original calibration has some "bug"?

Tune file attached

Thanks in advance

[Brice]

unplug the battery 10 minutes ...

[igorsm]

unplug the battery 10 minutes ...

what will it do??

[Brice]

what will it do??

If you re-read your tune from the pcm, you will find you have no transmission parameter anymore.
When you flash it, the pcm don't communicate with tcm and throtlle body module.

Try it, and send me a beer to France !

[igorsm]

If you re-read your tune from the pcm, you will find you have no transmission parameter anymore.

Try it, and send me a beer to France !

I had such problem on 2008 Escalade and 2008 Corvette C6 A6.

But they both had a harsh gear engagement after that.
Corvette was locked it 4th and didnt change any other gear.

Escalade showed transmission trouble code on a dash.

But anyway- will try. Thanks

[edcmat-l1]

Answer your email............

[Schexnayder racing]

i feel for ya bro!! been fighting a similar problem with a 2011 camaro........

[igorsm]

If you re-read your tune from the pcm, you will find you have no transmission parameter anymore.
When you flash it, the pcm don't communicate with tcm and throtlle body module.

Try it, and send me a beer to France !

Tried it today. Went to test - everything was perfect. Tried any abuse on it. With and without TC.

But after 5 hour stay, tried agian and... Reduced Power again from 1st attempt...

But I was lucky to get some codes when doing this for the whole period of time.
P0300
P1516

The truth is there no missfires. Maybe the misfire table is set too sensitive - car thinks that it misfires from a healthy cam and throws a Reduced power??

[igorsm]

i feel for ya bro!! been fighting a similar problem with a 2011 camaro........

Have you found any solution?

[Chris@HPTuners]

try to get rid of the misfires first, but the P1516 is worrying. Is this the original ECM that came with the vehicle?

[igorsm]

try to get rid of the misfires first, but the P1516 is worrying. Is this the original ECM that came with the vehicle?

Yes, original.

I want to try oem tb tomorrow

[Chris@HPTuners]

ahh ok, that will explain it. If the TB is not stock then likely this is the problem.

P1516 is triggered by the TAC module (the 2nd CPU in the ECM). It is the same position test as the P2101, checks if the actual position is close enough to the desired position. Unfortunately we cannot edit the tolerance of this calibration.

[edcmat-l1]

I've tuned a few of these with NW 102s, never had an issue.

[Brice]

This is 2 separe problems in my opinion.
You solved the first by deconnecting the battery, now you re facing the real problem

[igorsm]

Fixed...

Please - never touch TB opening table to make 102mm TB less sensitive...
It was the cause or REP mode.