I need to replace the clutch on a 2003 911TT I was told about a sport clutch from SACHS and a replacement flywheel from Dave Smith racing in Tampa. That sounds right for my driving style but the shop also said that when the car is in nuetral that a slight gear chatter will be heard. Has anyone had this experience with the sport clutch? If so, did you find the noise unbearable? Is there a clutch setup that you recommend? Thanks for your answers

 

How much power is the car putting down, or is it still stock? Do you track the car? Mostly a daily driver? A weekend toy, etc? Does anyone else drive the car? These will all play a role in which clutch you want to pick. Pick the wrong clutch, and you will quickly hate the way your car drives.

 

I bought the car 3 months ago and it is currently stock but I plan on upgrading the ECU in the future. I am the only driver and it is a second car not a daily driver. Mostly pleasure driving with an occasional autocross or possible 1/4 mile time. Any advice on the ECU would be appreciated also

 

The rattle sounds like the result of using a lighter, single mass flywheel. The OEM dual mass, I believe is a damper for the transmission at low RPMs & low speeds. It absorbs the vibrations (and subsequent gear rattles) from driving in parking lots, dirveways and the like where the engine turns so slow that the cylinder pulsations are transmitted into the driveline. A single mass, not having this huge extra weight, can let the engine rev up much more quickly. I prefer the performance to the quiet low speed operation but..... choose your clutch carefully. If there's any way possible, test drive a car with the proposed clutch to see if it fits you. Doc is absolutely right about picking the wrong one.

 

If all you plan on doing with the car is upgrade the ecu, then a stock clutch is a fine replacement. You could upgrade to the GT2 clutch, and the drivability wouldn't be lost, and the clamping force is a bit better. Absoultely do not go to a lightweight setup, you will quickly hate driving the car in traffic.

You can have your dual mass flywheel resurfaced and re use it. Some say you can not resurface a dual mass flywheel for some reason, which is false, we do it on a daily basis.

For an ECU tune, our GIAC programs make about 74hp and 78ft/lbs of torque from the just the flash alone. It is tune with true motronics, just like the stock programming. No piggybacking or shortcuts as done by some of the cheaper alternatives. I have never removed a GIAC flash, but I have flashed GIAC over the top of a lot of programs such as Upsolute and Revo.

 

Ok I appreciate your advice...It turns out that after more research the porsche shop suggested not replacing the flywheel and using a sachs hi torque pressure plate and sport clutch which was your advice also. That way no chatter and better clamping force.

I will check out your ecu programs...Have you any comment on the APR ecu?