What is the benefit of the 2* advance? Better performance? Better gas mileage? or what? If I get it done, will it void my warranty? Just a few of the questions I have since I have seen a lot of info flying around about getting the 2* advance done.:lookaroun
I found that using 89 octane gives mine the best performance. After the advance, I ran several tanks of 93,91,89, and 87, and 89 outperformed all of them.