My wife & I have 2013 Z06 which we AutoX, (newly purchased, 40k miles) coming off turns under hard acceleration the car stumbles, hesitates, acts almost like a rev limiter (nowhere near high revs). We just replaced the heads, plugs, plug wires, injectors (indication the car was overheated) and had a remote tune, by our very good tuner. I am at a loss of how to find this issue. It was tuned by data logs we sent to the tuner, I figured maybe to try and data log during the issue but how to replicate the action safely ??? BTY the car had this issue before all the upgrades. Any ideas ??? Thanks

 

If the things you replaced were still OEM type stuff, why not take the car to the Chevy dealer and have them put the stock tune back on it?

 

I would not take any of our cars to a Dealer !!! it can't have a stock tune because of the Archangel heads. I don't think it's tune related, thinking more like bad coil pack/packs or maybe a fuel issue ???

 

Easy and may just be active handling kicking it since you have the car in all on Nanny mode.

So start with pushing the TC button three times with motor running, until you see "comp mode" come up in the DIC. This will allow the back end to step out farther, Yaw sensor to allow more side G force, until active handling does kick in to try to save the car.

If that does work to keep Active handling from kicking in too soon, but still fighting active handling, then there is the next level and that is to turn active handling completely off. To do this, press and hold the TC button down with the motor running for 5 second, until you see "all off" in the DIC.
But, before you turn active handling all the way off (only abs will still be one), keep in mind that if you lose the back end/control of the car, the back end can kick around to be the part of the car going down the road first (in a heart beat), and Active handling is not going to be on to save you. So unless you have the skill level to play tokyo drift in a HP sports car and keep it in check/understand that the rear end can snap hook around on you, car should be left with all nannies on for street use, comp mode used for road course use instead.

Hence most of these crashes, are caused by the rear end snap hooking, and active handling either off, or not fast enough to save the car isntead.

 

[QUOTE=Dano523;1604960272]Easy and may just be active handling kicking it since you have the car in all on Nanny mode.

So start with pushing the TC button three times with motor running, until you see "comp mode" come up in the DIC. This will allow the back end to step out farther, Yaw sensor to allow more side G force, until active handling does kick in to try to save the car.

If that does work to keep Active handling from kicking in too soon, but still fighting active handling, then there is the next level and that is to turn active handling completely off. To do this, press and hold the TC button down with the motor running for 5 second, until you see "all off" in the DIC.
But, before you turn active handling all the way off (only abs will still be one), keep in mind that if you lose the back end/control of the car, the back end can kick around to be the part of the car going down the road first (in a heart beat), and Active handling is not going to be on to save you. So unless you have the skill level to play tokyo drift in a HP sports car and keep it in check/understand that the rear end can snap hook around on you, car should be left with all nannies on for street use, comp mode used for road course use instead.


we have the Mag-ride with the Jim Mero upgrade. sent Jim a e-mail and asked if the Mag-ride could be suspect, and he told me the only thing would be TC on and it reducing timing ??
we ran the car with TC off and the Mag-ride set on 3, leaves the active handling on !!

 

one note is the car runs excellent on the open road !!

 

Thanks for the video Dano, makes one reflect on the quality of drivers we have…….NOT.

 

[QUOTE=Pounder;1604960653]Why do I miss that this a Z07 option car with PTM?
I know, the whole Z06 with F55 should have been the give away from the start.


Here you go on your PTM/F55 settings, and what they do.

https://www.roadandtrack.com/new-car...-how-it-works/

 

[QUOTE=Dano523;1604961395]
we did not realize we had the PTM !!!! Maybe Jim Mero should have told us that ??? you are 1000% right on it's exactly what is happening !!! Thank You so much !!!