Originally Posted by darkmach1
Justin is very good as well. Would be nice if you had a way to datalog, I would recommend picking up an unmarried programmer (SCT or Ngauge) even if Roush nails down the tune. In the future if something doesn't seem right you can datalog it with the programmer and either troubleshoot yourself or have guys online help. Plus is always easier if you supply Roush with a datalog along with your concerns. How did you like the CF DS? Any vibration? What brand?
As for the drive shaft I went with the Drive Shaft Shop brand bought from American muscle for the Automatic I have CArbon Fiber. I did a lot of research before buying and could not find any horror stories or failures.
Install was straight forward removed my catback magnaflow exhaust and out with the 51 pound 2 piece steel anchor. the new one is 18 pounds and I was like wow hope this holds up with my supercharged beast......................
I have no vibrations and the power is more instant from dead stop. I run 20x10 wheels in the back and 20x9 in front so when I took off I was like wow felt lighter like the car lost 100 pounds or more like I'm rolling with 17 wheels but I am not.
When you step on it no lag just goes like bat out of hell feels like tranny is connected to rear end with no drive line. Also it is smoother when it shifts and downshifts as that's the little bit of torsenol twist of the carbon fiber.
It made a big difference for the better I barely give it gas and its gone where before you can feel the engine working more to get u going. when cruising 80 and I gas it hard it gets up to 120 faster like there is more top end I think all the 30 pounds eliminated off stock drive line just makes engine happier and more free reving.
I highly recommend it done 400 miles and jacked up the car to check all bolts and all are still in torque spec and no signs of anything bad.
Now after I got my revised Roush tune #2 car was perfect but since I installed the carbon fiber drive shaft the Roush torque limiting crap is kicking in now cuase the engine power is putting more to rear tires 305.
I had a lengthy conversation with Roush Gavin and told him this is your crap tune am I willing to buy your phase 2 or another tune because I cant deal with it. So long story short he agreed with me and convinced me to wait till March the first weeks that they have a new calibration and I will be very happy with it as it gets rid of the torgue management BS
So I will give it a try as it is free and my car is not a daily driver but if #3 calibration still has issues then I am done with Roush strike 3 ha ha ha
but yeah I love the drive shaft