Ever since I uploaded Doug's 93 Octane Torque tune I've felt a nice little boost in power at 3900 rpm under medium to hard acceleration. Is this normal? Seems to me this should be more of a characteristic of the performance tune.

Guess I'll have to upload the perf. tune to see what's different. Anyone who's uploaded both can you describe what feels different about them?

 

I get better mpg with the performance tune but the torque tune feels alot stronger, more brutish if you will. The performance tune is probably just as good but feels like it's smoother and power comes on more gradually.

Thats just how my butt guages the differance, I don't know what the actual differance is, never dynoed. I think the engine makes most of it's torque in the rpm range your describing, that may be the "boost" your feeling. I love driving on the freeway around 3500 rpm and gunning it, pulls really strong.

Been running the performance tune for a few weeks now, just wanted to see if there was any fuel economy change, which there seems to be an improvement. Not enough to make it worth the change though, I really love the torque tune.

 

yeah, its like coming on the power band on a 2 stroke mx bike... only much more mild.

 

I have a Diablosport tuner and I also noticed the car pulls real hard after 3500 RPM, almost like I pushed a boost button.

 

I thought the torque tune was supposed to give you more below 3K? That's why I was wondering if mine was normal. Seems like all the power comes on at 3900 rpm.

 

Boost Button

 

I agree! Even me with just a generic tune (on 87 octane!) just press the pedal down and "BWAAAAAA" even when I'm at 2000 RPM in 5th, haha!

Reminds me of my Dad's motorcycle, that thing has so much torque, he can pretty much be in any gear he wants, then crack the trottle open and he just takes off! he'll pass people on a 50mph highway in 5th gear (with me on the back!), just crack it all the way open and not even down shift, we just take off with a most awesome throaty roar Or, if he wants he can down shift two gears and scream off the RPMs

 

I punched mine going up a hill yesterday in 2nd, into 3rd and finallly into 4th at 80. I was shifting at or above 5K. His 93 Torque tune is the bomb.

 

I remember feeling that on the Torque tune as well. I have since started using the Race tune and it feels like the difference between low rpms and rpms higher than 3800 is a lot closer. With the race tune the acceleration seems much smoother. That boost you are referring to kind of jumps at you at 2400rpms now on the race tune. Takes some getting used to but in the end this tune screams.

 

I have both tunes,

I've felt the kick you described, but its not as pronounced as with the performance tune, where the engine just starts screaming after 3500 rpm.

 

That's where I'd rather feel the kick. (2400) Is the race tune the same as the performance tune?

 

Don't think so, I believe it is a seperate tune, Would like to know more.

 

Youll have to ask doug the specifics. Something about slighty more advanced timing and the most aggressive acceleration curve. Drop him an email inquiring about it and he should send you one if you are interested.

 

you guys have any idea why i just tried uploading my new race tune and the car basically just shuts back off?

really really wanna try it out... please help im dieing over here!
-mike

 

the "boost" you guys feel is most likely the variable valve timing changing profiles. Ford actually went ahead and gave the new mustang "v-tec" of sorts. I know it is contiunally variable, but i believe that just means it can shift at different times.

 

its not CONTINUALLY variable.... its like you said.... can vary at different times. not smoothly tho, lol. You can see what it does on a dyno, and it is even more pronounced with larger cams. It actually drops power a bit then goes back to a little more than before, and thats what creates what all of you are feeling. If you lock it out, the curve smoothes out like the sn95s.

 

doug chime in ..i want to hear more about this race tune...........

 

Yeah, me too.