imyy4u

OK, this is just something I heard online at another forum...

"The stock Mustang GT comes with three stock tunes...the normal, default one (the one that is overwritten on a re-flash, and stored in the re-writeable memory), the limp-mode one which is extremely restrictive (stored in read-only memory), and one hidden, "performance/diagnostic" tune (also stored in read-only memory) that they use to push the car to its limits to test it before delivery to the dealerships.This tune includes a 7k rpm redline, much more aggressive timing, and very quick/firm shifts for autos to stress the tranny. Again, it is used to dyno and/or test the Mustang before it leaves the factory to stress out the drivetrain, tranny, etc. and is tuned for maximum power (don't know if it's 93, 91, 89, or 87 octane). Also, since they use this tune to test the car, that is why brand new Mustangs usually have the computer/car reporting such poor gas mileage the first few tanks because it is used to this powerful tune."

Anyways, I'd love if someone can confirm or deny this rumor I heard. There is *supposedly* a rumor going around about how to activate this tune on other forums, some say it takes a tuner to activate it and some say you can activate it with just weird combos (like the seatbelt warning light disable trick). Can anyone shed any light on this?

FenderParrothead

I'm going to call BS on this, and it sounds like that's what you're leaning toward too. But, hey, if you never ask, you'll never know, I guess!

Believe me, I'd love for someone to post that this is true and make me eat my words.

CataclysmGT

Umm.....you think someone would have found this out with all the custom tuning around.

157dB

+1
But maybe the custom tuners dont want us end usersto know about it.
They (custom tune companies)might lose some sales?
I think I call BS on this also.
Any prove them wrongers out there?

howarmat

I call BS too......i highly doubt they dyno the cars before delivery.....

imyy4u

ahh but have any tuners been able to access/modify the limp-mode tune? NO! why not? because it's in read-only memory, meaning it can't be modified. but the real question is, can we even ACCESS that tune, as in force the computer to run it? if so, then we should be able to prove this true or false and see if we can force the computer to run the performance tune.

God I hope I'm wrong in thinking this is BS....

hammeron

i'm with everyone else who called [sm=bs.gif]

it soundstoo good to be true, thus......

Maverick9110E

yea and wheres the hidden ludacris speed switch?

300GT

I love a good conspiracy theory! Maybe Brenspeed and the Freemasons secretly run the world?!

Dex

there is a nitrous bottle under the back seats too. I think to activate it you say "go gadget go!" because its bluetooth