crap...wrong gas!
Thread Starter
4th Gear Member
Joined: Aug 2006
Posts: 1,968
From: Northern Virginia
Thanks, I'll load the 87 tune. I'd never use octane boosters, heard too many bad things about them. Now I can rest a little easier.
Joined: Feb 2009
Posts: 28
From: Maine
Now correct me if i am wrong but isnt there a +/- 2 octane on all gas pumps. I believe it says so right on the octane button you push, i was told if you actually tested the octane rating you will be under what the displayed rating is. this came from a gas station manager.
Thread Starter
4th Gear Member
Joined: Aug 2006
Posts: 1,968
From: Northern Virginia
Well, I loaded my 87 tune from Brenspeed. Guess I'll keep it for a while since I'll be driving 1400 miles next week to Texas. Word is, 93 octane is hard to find around there. Thanks again for all of the feedback. This website is like a 24 hr. hotline!
3rd Gear Member
Joined: Nov 2007
Posts: 820
From: TX
Depends on which section of Texas you're going through. Top of the state is 91 (and even 90 in some places), but most of the state is 93 octane. One of the benefits of having the oil and refineries there. haha.
4th Gear Member
Joined: Jul 2007
Posts: 1,852
From: East Moline, IL
No, you're probably not safe. The differance between an 89 and a 93 tune is simply the timing curve. More timing requires more octane to resist detonation. Running more timing with low octane fuel will allow detonation to occure. That will break ring lands. That's a bad thing.
You could add some octane booster. But trying to get regular to premium level isn't easy. Rasing pump gas 4 octane points is very difficult. You would need a lot of additives.
You really only have 2 choices. 1. Drain the tank and refill. 2. Install a stock tune for a little while.
You could drain the tank to about 1/2, and then refill with 100 octane leaded racing fuel - if you can get it.
You could add some octane booster. But trying to get regular to premium level isn't easy. Rasing pump gas 4 octane points is very difficult. You would need a lot of additives.
You really only have 2 choices. 1. Drain the tank and refill. 2. Install a stock tune for a little while.
You could drain the tank to about 1/2, and then refill with 100 octane leaded racing fuel - if you can get it.
Best option is to change to an 87 tune, or 89 and don't drive hard. Second best option is to drain the tank, put 93 in, and put the 87 in another car.