84%??? Damn man, you're lucky. The most I've gotten is 78.
EQT can also enable the DSG function in your Cobb. Same price as going to Cobb directly and it passe along some pennies to Ed and his crew.Try a different gas station, I think EQT recommends 76 in California.
Yes you should get the DSG tune aswell, contact Cobb support to purchase if your AP is not DSG unlocked.
I tested that. I ran 10 tanks of gas with the 02 sensor diconnected up top and 10 tanks with it connected and saw zero difference in MPG. I'm not buying that leaving the 02 sensor plugged in will cause it to run rich over time. And my testing is relatively controlled because I run a delivery route that's very similar everyday. I'm going to leave mine unplugged but not because there's any proof of it running rich over time.Well, no. You put the sensor in just leave it unplugged up top.