Just got my new Mustang GT... I have questions (Gas grade, MS Sync, Tuners, etc)

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12-02-2012, 08:08 PM

#21

Spork3245

2nd Gear Member

Thread Starter

Join Date: Jul 2008

Location: One of them

Posts: 275

Quote:

Originally Posted by Eric L

I have a 13 gt and tried a tune or two. I have to say that i was less than impressed. From what everyone says it should be a noticeable difference but i didnt feel it. Also worth mentioning is the fact that the 13 is rated at more HP than 11's and 12's. The factory tune is different for the 13, maybe theres not that much left to improve or manipulate. I am going to have the car dyne tuned this saturday to see what, if any, improvements can be made. For now i can say that generic tunes dont make that big of difference on my 13. Just my experience.

Quote:

Originally Posted by Nuke

You have a point. The '10 GT was rated 315 crank HP compared to the 05-09 GT's which were rated 300 crank HP. All Ford did was tweak the tune on the '10 (the same tune as the Bullitt) which resulted in less "bang" when custom tuning the '10 as opposed to the 05 thru 09. But IMO, the '13 5.0 should still see about 17-22 RWHP gain assuming it's a good Brenspeed or AM tune and not another Ford "attempt" at a tune.

The possibly "already better" tuning of the '13 model is why I'm hesitant to get the tuner.
BTW - Does using a tuner void warranty? Obviously I'd have to "de-program" it if I have to bring the car in for service or something, but wasn't sure if they could still tell.

12-08-2012, 01:33 PM

#22

Eric L

Join Date: Nov 2012

Location: Louisiana

Posts: 6

just got back from the dyno. Comparing the factory tune of my 13 to the factory tune of the 11-12 a few differences were observed with the fuel tables and timing, so they are different. This is on a bone stock car with only a cat-back. B/c of the differences in the 13 tune the jump in hp and tq are not as great as with the 11-12. In the end you wind up at the same place. It did smooth the tq and hp curves though and the car runs more smooth now. I think that im prob gonna save that money and spend it on a supercharger and long tubes rather than a CAI and cat deletes. This has all been discussed over and over i know.