NicD

I was finally able to update my magnetic ride control with the latest GM performance calibration a few days back. Gone is the floaty feeling in Tour mode yet it is still nice and soft. Sport mode is still firm but absorbs the bumps in the road better. Track mode feels around the same firmness but slightly less jittery on the street, not sure how it would perform at the track yet but I have no reason to doubt and improvement there too. Overall I can say that for me it was worth it.

Now I didn't visit a dealership, I try to avoid doing that at all costs just because of the time involved and my time is worth a decent amount these days. I have an MDI cable and an ACDelco/SPS subscription so I was able to make this happen in my garage one night. The standard procedure thats posted in the tech document asking for a VCI number isn't valid for this method or they changed the procedure, not sure. Maybe it has to do with the fact that I'm not a dealership and I'm independent. The ACDelco techline simply adds the performance calibration to the VIN # in SPS so you do a normal flash of the module and the new calibration automatically comes up as the newest update. They will bill you and it's a bit more expensive than the normal $350 through a dealership but again, my time is worth more. You can verify this by looking at SPS during the reflash procedure and see the calibration listed for the module.

Checkmate1

Does the car dive upon hard braking? Trying to compare this reactive system to the predictive DSC system.

erick_e

Who did you purchase the the GMPP calibration from? Did you just call the techline and ask them to update your VIN with the calibration afterwards?

NicD

I never thought it was too bad before in track mode but I just went out for a drive to see if I could tell any difference and if there is it's pretty slight. But again I didn't think it was too bad to begin with.

NicD

AC Delco Techline and yes that's basically how it works.

Checkmate1

Someone needs to document their on track experience with this calibration update.

Seldoon

What is VIN #?! You do know that the N in VIN stands for number?! Number #??!!

pkincy

I presume this means the 16 Z06 non Z07 calibration is now available. Thank you, I will make an appt to do an oil change and get the calibration done.

JMB

You 'da man Nic!

JIAZZ06

I had my '17 ZO6 A8, non-ZO7 updated yesterday ($350 out the door). I'm very pleased with the results. The car rides noticeably smoother in both Tour and Sport. I also experience less "head toss" on rough/uneven surfaces. The rear end does feel more planted while turning when the surface is rough. I feel more confident that the rear end will stay put than I did previously. I can now go a bit quicker on rough roads with less chassis upset. Haven't tried Track yet, but may hit the track (Wild Horse Pass Motorsports Park) later this month.

I've followed the DSC/GM upgrade debate with interest. My two cents is that if you are looking for a worthwhile ride/handling upgrade for a relatively low price, then GM is the way to go. If you are looking for more adjustability and the ability to update your software, then, by all means, go with DSC. Disclaimer: I have not driven a DSC-equipped car, but I believe all the positive comments about DSC that appear on this forum. The great thing is that we have choices to improve an already great car. It also amazes me that such noticeable changes are possible without adding/changing any hardware!

DRLC5

Great write up Thank you OP. When I go to the dealer what exactly do I ask for? Magnetic Ride Performance Calibrations? My dealer is NOT up on things. Thanks.

SharkbyteLT4

Thanks for the update

erick_e

Thanks.

I finally got around to calling the Techline and purchasing the calibration for my 16Z earlier. I just finished installing it this evening after updating my CTS first. Took less than a minute to download and reprogram the suspension module. Of course I will have to wait a couple of days to see if it was worth it.

Jeff V.

I've also got an SPS subscription and an MDI. Are you guys just calling the AC Delco customer assistance line to get this done? Do they bill the credit card that's associated with your SPS account?

I'll gladly pay a small premium to not have to go to a dealer. That's exactly why I invested in this equipment in the first place.

Range_Rat

Going in for MRC software upgrade as soon as the weather straightens up!

erick_e

I can't speak for NicD and his experience. But in a nutshell yes, that is the gist of it. However they required my Business Associate Code to affiliate the customer account with for billing.

Chi_weezy

sunsalem

Your dealer doesn't know WTF he's talking about.
Have the software downloaded (1/2 hour or so), drive your car home and leave it in the garage overnight.
In the morning, you're good to go.

91ZR1

Exactly!

Chi_weezy