Gas Mileage with vs without CAI / tune - my tests

Reply Subscribe

Thread Tools

Search this Thread

05-20-2008, 12:36 PM

#21

tn_gt

3rd Gear Member

Join Date: Apr 2008

Location: Kingston, TN

Posts: 734

RE: Gas Mileage with vs without CAI / tune - my tests

alright well i just wanted to make sure, cause in tn or at least east tn its only a 20 cent difference in reg and premium, and on fridays its only 10 cents difference at this one place

05-20-2008, 01:26 PM

#22

Mike521

2nd Gear Member

Thread Starter

Join Date: Sep 2006

Location: Long Island, New York

Posts: 185

RE: Gas Mileage with vs without CAI / tune - my tests

Quote:

ORIGINAL: gatkins94

Mike,

I did a quick re-look at your numbers, and unless I did a calc wrong, somewhere between $4.30/gal, and $4.45/gal for 87 octane, and using the SAME $0.30 difference between 87 and 93 the numbers change, and it becomes more COST efficient to run 93 octane. The percentage of the difference is smaller.

Thanks for doing this, I was just about to do the same thing! I still may, I drive almost ALL highway miles, so mine may come out differently.

good point I didn't think of that either, so in that case if prices keep going up, 93 will clearly be the best option overall.

Looks like for a lot of people it's already the better option since it's not 0.30 cent difference anyway, you guys are lucky, you have every excuse in the book to go out and get a CAI / tune

05-20-2008, 01:47 PM

#23

ThumperMX113

5th Gear Member

Join Date: Aug 2007

Location:

Posts: 2,135

RE: Gas Mileage with vs without CAI / tune - my tests

I'm glad someone else did the math because when I did it for my truck it was more cost effective to run 93 octane. I've used that to justify paying for it now in the Mustang.