sunoco 93 and superchips on performance mode

 

89. manual says it recommends 89. there are no problems with 87 either. my truck runs the same but im just going with the manual.

 

Like the book says, 89. Red

 

I run 89 with my programer set to the 87 econo tune, Works better than the 91 performance tune for 0-60 times for me. I'll run the 91 performance tune with 91 every once and a while but I only could see the performance increase from the 60+ range.

 

89

 

Chevron 91 because I am running the sc preforamnce tune. 89 prior to the tuner

 

I run 87 with SC on 87 tune. No problems thusfar. I run 89 through on occassion. I see no significant change in performance.

 

I run 89 also. I was running 87 and just started 89 2 tanks ago. It does like the 89 a little better. I've noticed a slightly smoother idle. My manual says to use 89 also.

 

ULSD #2 for me