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Discussion Starter #1
I recently got the free BAMA tunes for life and am currently running the 87 octane tune, which I am very happy with. But a few times I swear I have heard a little detonation from the engine under a load. Because I've only heard it a few times and it's very minor I can't be sure. I've only heard it when I have the top down and don't know if it is road or wind noise or just my imagination, but I've thought well, if it is detonating I would throw a code, but there are no codes.

Would the ECU pick this up and cause a CEL?

Also.... aside from the price of the fuel, is there any reason I should not run the 91 octane tune for a DD?
 

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Discussion Starter #4
So if indeed it is pinging, would it be wise to:

1) continue to use the 87 octane tune, but run 89 octane fuel
2) use the 89 octane tune with 89 octane fuel
3) convert it back to the stock tune
 
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