View Poll Results: what octane do you run in your mustang
87
24
19.83%
87 w/ tune
8
6.61%
89
2
1.65%
89 w/ tune
5
4.13%
91
5
4.13%
91 w/ tune
18
14.88%
93+
10
8.26%
93 + with tune
49
40.50%
Voters: 121. You may not vote on this poll
I run ________ octane
2nd Gear Member
Joined: Jul 2010
Posts: 184
From: Ohio
I'm still trying to figure out what octane to run when I get my tune. Will start with 87 and work my way up the ladder and see what difference it makes. What's odd is that I've noticed gas stations around here sell either 92 or 93. I have to wonder if the places with 93 really have a different supply than the places with 92...
5th Gear Member
Joined: Apr 2008
Posts: 3,666
From: Acworth, GA
87 custom tune. I used to run the 89 custom tune, but decided to go back to the 87 custom tune, since I only felt minimal performance gain between the two. I feel more throttle response at lower RPMs w/ the 87 custom tune, which works better for me since I have a short commute to work and take all back roads. I was thinking of trying out the 91 octane tune during my mountain run in a couple of weeks, however the gas price increase may deter me from doing that.....Gas prices are getting ridiculous!!
3rd Gear Member
Joined: Jan 2008
Posts: 775
From: Chicago Burbs
I figured it this way...
93 is about .30 over 87 here, my typical fill up is about 13 gallons about every 5 to 6 days, so if I calculate that over a year it's 261 dollars difference from 87, for less then a dollar a day I can feel good about putting in a little better octane gas and enjoying my car with a bit more power, one of the cheaper performance mods :P
93 is about .30 over 87 here, my typical fill up is about 13 gallons about every 5 to 6 days, so if I calculate that over a year it's 261 dollars difference from 87, for less then a dollar a day I can feel good about putting in a little better octane gas and enjoying my car with a bit more power, one of the cheaper performance mods :P
6th Gear Member
Joined: Jun 2007
Posts: 16,182
From: PA to KY ('07) to IL ('09) to MS ('10) to FL ('11)
89 with tune but if she was my DD I'd CONSIDER going to the 87 custom tune. Most of the miles on her are highway cruising with the exception of those 120+ MPH sprints so 87 would be no big deal.
