[Xtremez3]

there is setting on my superchip for 91 or 87 octane and i run 89.. which should i go with?

 

[Sky high hemi]

Super chips say the 89 you will feel mostly transmission shift improvements. It's not until 91 that you will feel any engine performance.

 

[GoBruins]

i run 91 octane with 87 program. my sig says why.

 

[HEMI450HP]

If you can afford the extra $2.50 per fillup, then run the 93 tune. It performs better than the 87 or 89 tune hands down.

 

[GoBruins]

If you can afford the extra $2.50 per fillup, then run the 93 tune. It performs better than the 87 or 89 tune hands down.

sorry to hijack..
what kind of tranny will you be running with all the power you will be making? apparently not stock.. and also link?

 

[HEMI450HP]

sorry to hijack..
what kind of tranny will you be running with all the power you will be making? apparently not stock.. and also link?

PM sent

 

[TomsDodge]

I have not seen any gasoline with 93 octane at a public gas station (in California) in years.

 

[iHemi]

Its all up to you, if you can find 91 or above octane, then run 91. Just dont run the 91 setting with anything less than 91 octane. Ive been running the 91 setting w/ 93 octane pretty much since I got mine, like HEMI450HP said, its only about $2.50 more per fillup.