I accidently put in a little bit of 87 but i am running the
91 bama torque tune right now. Am i gonna have a big problem now...

 

Try one of these:
1) put in an 87 tune
2) Retard the timing by 4 degress on 91 tune
3) Put in a HIGH octane booster.

ANd which ever option you choose. Stay under 3000 rpm and accelerate slowly.

THen fill up with the highest octane you can get.

 

DO NOT EVER put Octane booster in your tank. You'll foul your plugs, and end up replacing them.

Just switch tunes or retard your timing, no biggie.

 

well, I had less than a quarter tank of 91 and then put in 87 (less than 2 dollars worth) and then immediately stopped and filled up w/ 91 again. If I change the tune, how long will I know to run the 87 and switch back to 91? thanks for the quick responses...

 

You could run it for a tank full or two of 91 to be safe.

 

I wouldn't even switch the tune personally. If you only put $2 worth, that is under 1 gallon. That would make the average octane rating of your tank like 90.7 or something. Don't worry about it. If you hear some knocking, just back off the throttle a little. Once you fill it back up it will be good as new.

 

Why not just syphon the tank and fill back up with 93 octane? Put the syphoned gas into another vehicle. That is what I would do.

 

Why can't you just flash back to stock??

 

Hmm well I didnt think of doing that, but I have a JLT intake, will that make a difference

 

You'd be fine even if you did a full tank of 87 if you took it easy. With $2 worth don't sweat it.

 

Dude,you're fine. Even if you filled the entire tank with 87, worst case scenario: the computer would compensate timing for you, thus losing a few (10ish) hp. 39/40ths of your tank is filled with the right caliber dino juice. Worst case scenario: nothing will happen.

 

The timing adjustment may or may not take place with an aftermarket tune. It depends on the diligence of the tuner. But you could always compensate with your right foot if you DID get pinging. As stated, the amount is so small it's an absolute non-issue.

 

Very informative thanks ppl.

 

Ditto, for that little(not even a gallon), no worries

 

For you King Taco for pushing that 87 button...


Like other said, don't sweat it.

 

hahahaha, well, i was like and when i did it

 

i once put 87 in my bike when it takes 91, ran like SH*T until the 87 was out but after that i nvr had a problem. i think ull be in the clear, just dont go to heavy on that thoddle until u get that good ol' 91 back in there

 

Youll be fine, 2 dollars of gas wont change anything. Besides how accurate do you think some of these octane rating figures are coming from the gas stations. Im sure they play around a hair too. This is a sick world my friend.

 

Your fine...just stay out of WOT until you use the gas

 

Well check that... $2 worth didnt lower that much at all... dont go crazy with the car just in case... but really there are no worries