12.35@111mph - 93 oct Tune, Offroad X, MT Drags (Clutch related issues)

[black03]

Here's a video of the Lethal Performance 2011 5.0L Mustang Gt at the track last night. This was our first run off the trailer as well as our first run with the 93 octane Jon Lund tune, Lethal Performance 3" Offroad X-pipe and Mickey Thompson ET Drags. Our driver Derek Perez launched the car at 4000rpms to see how the car would launch. That RPM yielded us a 1.76 60ft. Although not the greatest 60ft it was a great starting point. This was done with the stock suspension, catback and exhaust manifolds. This run yielded us a 12.35@111mph. Later that evening Derek launched the car at 5000rpms and cut a nice 1.69 60ft which would have yielded a nice ET however in between the 2-3 shift we experienced the "clutch issue" that we have been hearing about so much recently. What happens is that in between the shift the clutch pedal actually sticks to the floor. He was able to easily hit 3rd gear however with the clutch pedal stuck to the floor it won't re-engage the clutch and the car will then hit the rev limiter. We tried another 2 passes after the car cooled down only to be greeted with the same clutch pedal issue. From what we hear there is a TSB out on the new 2011 clutch which involves the clutch box assembly that's the cause of the pedal sticking to the floor issue. In the meantime while that's being worked out we're working with one of our clutch manufacturers to come up with an aftermarket clutch which not only drives like stock but will handle hp levels up to 1000hp. We'll make sure to keep everyone posted as we get more info.

[nomedia="http://www.youtube.com/watch?v=ylnBl-f3z-8"]YouTube- Lethal Performance 2011 Mustang GT 5.0L 12.35@111mph - 93 Oct Tune, Offroad X-pipe, MT Drags[/nomedia]

 

[chrisheltra]

Damn did he chirp all gears?

 

[black03]

Damn did he chirp all gears?

Indeed he did.

:beer:

 

[sonic_4.6]

I was hoping you would have a video of the car bouncing off the limiter. haha

 

[Carbd86GT]

The limiter on these cars is different. From my experience last night, it does not "bounce" on the limiter, it still sounds smooth but the engine stops revving.

 

[assasinator]

when i let my bounce off the limiter its not at all like my 96GT. the 96 will just fall over and then hit hard again.

The limiter of the 2011 kinda eases in and the revs drop then back on. its pretty smooth.


with this clutch issue i will NOT be running it at the strip even though im gonna drive it as usual on the street. even though a warantee fixes it, i dont want it in the shop asap.

 

[Carbd86GT]

If you shift under 6500 rpm, there is no issues. I didn't have any issues when I was shifting at 64-6500. This is the first time shifting above that, and it really only happens near 7000 rpm. If you still have the factory rev limiter/tune, you most likely won't have this problem. There is a TSB that should be out shortly for this issue though, which involves installing a clutch pedal box/assembly out of a GT500 into the Mustang GT.