[RC45]

Took the car to MSRH this afternoon to see just how the C7 Z07 19/20 Michelin Pilot Sport Cup 2s would handle the cool winter weather.
Took a laps or 2 to get up to temp and after that they were very predictable.

But I think the larger rolling diameter of the 19/20's is throwing the Active Handling off as the system seems the system is kicking in at odd times.
Easily resolved by just turning A/H off and driving the car like it wa 1997 Viper LOL artyon:

Rumpa Rumpha Rumpha Rumpha....

MPSC2s good and sticky after a sound thrashing - but clearance for the
19/20s is almost non-existent I might try add a little ride height and try them
again - but will probably just run 18/19 on the track in the future and keep the
19/20 for street use..

Making use of the custom picnic table

As always, run more extra quart of oil

 

[jub jub]

Car is looking good, Paul. I think you can tune the out the tire diameter using tuning software...I think.

 

[racingvette]

Yes wheel, tire and rear end gear changes need to be changed within the tune to align the proper speedo, ABS, TC and torque management

 

[RC45]

What software is that? HPTuners?

 

[racingvette]

No it is Tunercat that became a product of JET Performance

 

[RC45]

Which product on their extensive list would be used to tune and calibrate the C5 Active Handling system?

 

[racingvette]

Sorry I do not know anything about other products JET may have as I bought my PCM/TCM tuning tool when Tunercat still owned the tuner tool.

 

[RC45]

Is this something you have used on a C5?

Is it software or a device/hardware? Perhaps you can check the name of your piece of software or the device?

 

[racingvette]

It is a tuning tool that works off a laptop and can work with many different GM vehicles
Comes with software, cables and hardware interface that connects between the laptop and the port under
the dash