Changing tunes, mixing octanes?
01-18-2008, 03:56 PM
#1
Thread Starter
Join Date: Jan 2008
Location:
Posts: 43
Changing tunes, mixing octanes?
Hey guys, im switching to 91 tune just to have some fun before I pick up a gt in a couple weeks, problem is im running 87 with a half tank left. What would be the best procedure, waiting till E and tuning/filling up or can I do the mix?
01-18-2008, 06:56 PM
#2
4th Gear Member
Join Date: May 2007
Location: Utah
Posts: 1,249
RE: Changing tunes, mixing octanes?
Get it down to E 1st. Even then, there's still about a gallon left in the tank. You should be OK though.
If you hear any "pinging" you can always add some octane boost. Most people here actually suggest
you fill up with 91, run it to empty...fill up with 91 again and then load the tune. Which is safer really.
If you hear any "pinging" you can always add some octane boost. Most people here actually suggest
you fill up with 91, run it to empty...fill up with 91 again and then load the tune. Which is safer really.
01-18-2008, 07:01 PM
#3
4th Gear Member
Join Date: May 2007
Location: West Melbourne, FL
Posts: 1,373
RE: Changing tunes, mixing octanes?
ORIGINAL: grampa_stang
Get it down to E 1st. Even then, there's still about a gallon left in the tank. You should be OK though.
If you hear any "pinging" you can always add some octane boost. Most people here actually suggest
you fill up with 91, run it to empty...fill up with 91 again and then load the tune. Which is safer really.
Get it down to E 1st. Even then, there's still about a gallon left in the tank. You should be OK though.
If you hear any "pinging" you can always add some octane boost. Most people here actually suggest
you fill up with 91, run it to empty...fill up with 91 again and then load the tune. Which is safer really.
I would fill it with 91, then fill with 91 when its empty and then load the tune
01-18-2008, 07:06 PM
#4
3rd Gear Member
Join Date: Feb 2007
Location: New York
Posts: 568
RE: Changing tunes, mixing octanes?
yea drive it to E then fill it half with 91 so it dosnt take as long to drain down, once your on E again fill it all with 91 then re-tune it, if your goin to be picking up a gt a ping wont hurt anywayz.
01-18-2008, 08:05 PM
#5
5th Gear Member
Join Date: Jun 2007
Location: Decatur AL USA
Posts: 2,176
RE: Changing tunes, mixing octanes?
Run it to empty.
Add 3 gal of Premium and runit to empty again
Fill up with Premium.
Just as an asideI get around 7% better mileage on myPremium Tune so that covers $0.20 of the price difference.
Add 3 gal of Premium and runit to empty again
Fill up with Premium.
Just as an asideI get around 7% better mileage on myPremium Tune so that covers $0.20 of the price difference.
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