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Since Ive installed the update last week, my rear bumper is covered with soot after about 10 minutes of driving. I run strictly e85 so it shouldnt be running so rich. My tune is the same its been since June so it has something to do with the update. Can this be resolved? or can I roll back to a previous update?

Joe
 

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Since Ive installed the update last week, my rear bumper is covered with soot after about 10 minutes of driving. I run strictly e85 so it shouldnt be running so rich. My tune is the same its been since June so it has something to do with the update. Can this be resolved? or can I roll back to a previous update?
Sorry to hear that Joe.

First off, you need to data log and see whats going on with the AFR.

Cobb does allow you to roll back updates these days I think.

I had issues with Cobb updates a few years back causing knock. It was one of the most frustrating things I have been trough with these cars.

Nowadays if my car is running well I DON'T update anything.

The last update I did was to add the safety features into my tunes. That was worth it imo. Choose your updated wisely people...
 
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