08 Corvette randomly unlocks convereter at cruise

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I will make one calibration change for an additional $100 per change. For example, changing a shift point for a given gear is $100 vs changing a shift point and a pressure setting would be $200. That value can be used towards the full custom tuning price.

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Last post

Mon, 06/13/2016 - 11:40

#1

Nigel

08 Corvette randomly unlocks convereter at cruise

Setup:

2008 LS3 A6 corvette 20k miles

Circle D billet triple disc built for a turbo setup (3500 flash)

Z06 diff w/ 3.42 gear

Stock engine w/ BTR springs and retainers

Custom rear mount turbo setup with Forced Inductions billet 76mm

Fuel Injector Clinic 850cc injectors

Aeromotive Stealth pump in stock canisiter

Racetronix rewire

Derale external trans cooler with fan

Zr1 map sensor

Speed density tuned

Basically I'll be cruising and I have it commanded to lock in 3rd and sometimes it does, sometimes it doesn't. At times when cruising and locked it'll just come unlocked and a few minutes later it'll lock back. Other times it won't lock at all again until I reach my destination.

Now if I'm cruising and it unlocks while I'm logging I can tell it to lock via VCM scanner trans control and it'll stay locked till I turn it back off.

It's worth noting it did all of this before the turbo/rearend/injector setup. It was fine for months after the converter install then I noticed it would take longer to lock. I could kill the car and fire it back up and it would lock up and be good to go the rest of the trip. Now that doesn't even help.

Any suggestions? I didn't know if posting the tune was necessary but I can if need be.

Thanks for any input!

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08 Corvette randomly unlocks convereter at cruise

Click on the "SUBSCRIBE" tab to sign up. I will not respond to technical questions unless you are a paid subscriber. Calibration and Config files will not open directly from the site, they must be downloaded to your computer in order to open.

NEW!!!

I will make one calibration change for an additional $100 per change. For example, changing a shift point for a given gear is $100 vs changing a shift point and a pressure setting would be $200. That value can be used towards the full custom tuning price.