The 2011+ Mustang Thread

[Sax1031]

Originally Posted by Viral

No doubt. Has any NA car ever picked up nearly 90HP over stock from a tune only?

415rwhp on the 2011 GT probably equates to 460-470hp at the crank.

[Bob Cosby]

Originally Posted by KungFuHamster

the 415 hp was accidently done in 4th gear...so the 391 rwhp numbers are the accurate ones (done in 5th gear which is 1:1)

The correct 5th gear (1:1) baseline was 391 RWHP. The after-tune 5th gear (1:1) was 415 RWHP.

See this thread for details directly from Livernois.

[Sax1031]

Originally Posted by KungFuHamster

the 415 hp was accidently done in 4th gear...so the 391 rwhp numbers are the accurate ones (done in 5th gear which is 1:1)

Today we tuned Shaun's 2011 Mustang GT. The car was baselined roughly a month ago and made 375 RWHP / 354 RWTQ. We wanted to basline it again since it has more miles noa and to make sure the results were as accurate as possible. So the actual baseline today after 2,000 + miles was 391 RWHP / 385 RWTQ

After tuning, it made 415 RWHP / 399 RWTQ!!!

http://forums.themustangsource.com/f...-5-0-a-484441/

And the video description makes it sound like the baseline was done in the wrong gear.

Who knows.

[Sax1031]

Originally Posted by Bob Cosby

The correct 5th gear (1:1) baseline was 391 RWHP. The after-tune 5th gear (1:1) was 415 RWHP.

See this thread for details directly from Livernois.

Thanks for that link and clearing it up.

[Bob Cosby]

If I may add a quick note about dyno numbers....and this applies to any car: The important part is not how high the final HP number is - in the case of this particular car, 415 RWHP. Rather, the important part is HOW MUCH power did the engine pick up. And not just in peak, but throughout the power band.

It is important that there be as much consistency as possible between the baseline pull(s) and the final after modifcation pull(s). These pulls should be on the same dyno, with the same operator, using the same procedures, in the same gear, and if at all possible - on the same day and in the same conditions.

A dyno is a tuning tool - it does not go down the track (be it a straight track or windy one).

[Sax1031]

You don't have to tell me. The dyno broke my heart one time. But it was a great experience to learn at 17 you don't race dynos.

[Bob Cosby]

Well, there's even more to it than that - and I bet the article doesn't mention it: One can make better use of the power available from the LS3 than from the 5.0, in bone stock trim.

What hurts the 5.0 is the 6850 rpm redline - coming only 250 rpm after peak power. This means that one must shift well before what would otherwise be the optimum shift point (likely 7200-7300 rpm). I'm not sure about the Dodge, but in stock trim, the LS3 can make better use of its powerband, taking away some of the "on paper" power-to-weight advantage of the 5.0. This is one reason the cars are as close as they are in 1/4 mile acceleration.

It would be interesting to take a dyno run from each car (Camaro and Mustang) from the same dyno, then do the math to figure out the AVERAGE power in each gear and obtain a power-to-weight ratio from that. Bet they'd be even closer than they are now.

One final thing....any mag that tests a 2011 GT with 3.73 gears in the 1/4 mile will be hitting the limiter in 4th gear at ~109 mph.

[BigDan]

Originally Posted by Bob Cosby

Well, there's even more to it than that - and I bet the article doesn't mention it: One can make better use of the power available from the LS3 than from the 5.0, in bone stock trim.

What hurts the 5.0 is the 6850 rpm redline - coming only 250 rpm after peak power. This means that one must shift well before what would otherwise be the optimum shift point (likely 7200-7300 rpm). I'm not sure about the Dodge, but in stock trim, the LS3 can make better use of its powerband, taking away some of the "on paper" power-to-weight advantage of the 5.0. This is one reason the cars are as close as they are in 1/4 mile acceleration.

It would be interesting to take a dyno run from each car (Camaro and Mustang) from the same dyno, then do the math to figure out the AVERAGE power in each gear and obtain a power-to-weight ratio from that. Bet they'd be even closer than they are now.

One final thing....any mag that tests a 2011 GT with 3.73 gears in the 1/4 mile will be hitting the limiter in 4th gear at ~109 mph.

Raising the rev limiter to 7200+ is what most tuners are doing already and getting fantastic results at the track.

[KungFuHamster]

Originally Posted by Bob Cosby

The correct 5th gear (1:1) baseline was 391 RWHP. The after-tune 5th gear (1:1) was 415 RWHP.

See this thread for details directly from Livernois.

Rick posted the same thread on S197forum...guess i just read it incorrectly. my bad

[Bob Cosby]

Originally Posted by EnvyTerra

The Ls3 is always going to get more torque wish GM would give it some nice gearing though!

Yes, it is that displacement thing that always wins in the low-mid range, and in the case of the LS-series of engines, good high rpm torque too. However, torque by itself doesn't tell the story (you can have 1000 lb/ft of torque and not move - think torque wrench). It is torque * rpm that tells the tale.

Big Dan....yes....that would be the very first thing I'd want to do. But....that's probably for a different forum too.

[ULTRAZLS1]

Originally Posted by THE EVIL TW1N

looks like they used 1/4 times from another source. According to the article they tested it on a 1/8mi.

they said they both were running neck and neck run after run.

looking at the video, the 1/8 there was downhill considerably which probably helped the Camaro overcome the inertia of its weight problem better

And yet more proof of the 110 3rd gear speed in the camaro.

Any more thoughts on this?

are you ready to give up and admit you are wrong yet?

Cosby...I thought I had read many times that a partial fuel cut-off starts at 6850 but the rev-limiter does not come on until 7000. Pretty much every source I can find states 7000 for actual red-line.

Even this recently posted road and track article shows them taking the car to 7000 rpm in the data panel

[2SSARMY]

Originally Posted by ULTRAZLS1

And yet more proof of the 110 3rd gear speed in the camaro.

Any more thoughts on this?

are you ready to give up and admit you are wrong yet?

Cosby...I thought I had read many times that a partial fuel cut-off starts at 6850 but the rev-limiter does not come on until 7000. Pretty much every source I can find states 7000 for actual red-line.

Even this recently posted road and track article shows them taking the car to 7000 rpm in the data panel

I wish my A6 would get 110 in 3rd... Pos only gets up to 97-98 :(

[Maurdib]

Originally Posted by 2SSARMY

I wish my A6 would get 110 in 3rd... Pos only gets up to 97-98 :(

Do you have yours tuned?

[KungFuHamster]

Originally Posted by Bob Cosby

One final thing....any mag that tests a 2011 GT with 3.73 gears in the 1/4 mile will be hitting the limiter in 4th gear at ~109 mph.

so do you think the 3.55 will be an ideal gear for these cars? or perhaps the 3.73 will still be the best all around gear once a tune is applied and the rev limit is raised?

what do you think would be best...trying to go through the traps in 4th or making the shift into 5th?