thelakeshow2k

I've been checking with dealers (So Cal, South Bay/OC) and no service advisors knew about this. One right by my house (Win Chevrolet) said they heard about it, had not done it and would charge $650. I found Chris at George Chevrolet (ext 556). He also hadn't performed it but was aware. He called Chevy, had it done in an afternoon and for the $350 MSRP! I will let the car settle for the day see if I notice a difference.

Scudz

phil hunter

Out to lunch. Had my GS done last month and it made a huge improvement in the ride quality in 'Sport" mode. Lots of threads on this. Do a search.


Phil

Steve Garrett

I just had mine done.....could NOT tell the difference, at all.

Scudz

thelakeshow2k

Calibration finished yesterday and I let it sit for the night. Drove the car today on street and freeway (Southern California) and I feel a change. I drove in Touring Mode first (My mode 80% of the time) and my first thought was that the bumps in the road weren't as harsh and jarring as before. There was less suspension stiffness than before and I felt a very slight floatiness (at times) on freeway but definitely nothing overboard. When I dialed to Sport Mode, suspension stiffened up and the car was ready for aggressive driving.

Before, It used to feel harsh ALL the time (even in Touring) and it was wearing on me a little. Now there is a bigger difference in ride quality (from Touring to Sport) and for $350, I'm happy with the results.

Puttnutt24

Can anyone tell me if this MRC Update is available for the 2017 Z07 Cars as of 4/12/18?
Thanks, Rich

Ames

Why wouldn't GM do this at the factory or during PDI if it makes such a big difference in daily driving?

YO-EL

Because its NOT a factory update.
Its a GM Performance Part upgrade, (optional purchase if desired)

nascar57

My dealer says they have to keep it overnight to let it settle in. Forum members are saying they took it home and let it set. Do I really need to let them have it overnight?

YO-EL

No. It will have full effect after it sits 8 hrs...
You ARE able to drive it, immediately after the upload to your car.

thelakeshow2k

My dealer said I could take it home but don't do any "Spirited Driving" until the next day.

Carqwik

FWIW, I had it done last week at my local Chevy dealer (which is the 11th biggest seller of Vettes). Service advisor said the tech sheet required the car to sit overnight at the dealership. OK with me. Total cost - $350. Definitely made a difference, car is way less harsh in tour, and a tad bit less harsh in sport. I would say it's an improvement for sure. Worth the $$.

2017 GS M7 btw.

village idiot

LOL wtf is settling? It's an electronic update. You're changing a tune. What is "settling?"

Jeff V.

A big part of this upgrade is some new temperature compensation tables. The shocks respond differently when they're hot. So they need to be allowed to fully cool down so the module can set some temperature reference points for those tables.