cjarrett

Minor gripe/question:

I'm noticing that when I do a really quick blip of the throttle I hear a slick 'clack' sound when doing heel/toe downshifts. The clack isn't followed by an appropriate rise of revs. If I am slightly more deliberate with the throttle during the downshift I can get a nice rev match but I'd like to have a bit more response. I would have imagined the throttle-by-wire would allow better response, but I don't recall feeling this in my previous E36/E46 M3's, or maybe not quite as pronounced. Has anyone else noticed this? Perhaps the strength of the actuator on the throttle body is the culprit? Perhaps it's just my 997? It does sound like that noise comes from the throttle body...

Newt Gomez

If you're in comfort mode, it's too unresponsive and if it's in sport mode, it's too responsive imo. I haven't liked the throttle mapping on my 997 either, but you do figure it out eventually. It never hurts to check your throttle body for cleanliness as it's a standard service cleaning it after a certain amount of miles.

cjarrett

Yeah I drive almost exclusively in Sport mode these days. Maybe it's just too quick?

I'll give it another clean but I cleaned it and the whole intake system earlier this year...

997.2GTS

The throttle body does make click-clack sounds but I only ever hear them at self test (ignition on and no start). There is a throttle body recalibration process, if you search RL.

Prairiedawg

I think your lack of throttle response is the dual mass flywheel if the car is new to you. I had the same problem when I bought mine and thought the engine should rev faster. I thought there was something wrong with it but it turns out that I just have to be more deliberate with the throttle. A quick stab gets you nothing.

If you have owned it for a while and this is a new problem, the throttle body may be your issue.

cjarrett

Thanks, could be right, the quick stab just doesn't work... Will try the TB reset, and maybe consider a lighter flywheel when I do the clutch someday. Its our secondary car anyways so fun takes a priority 😁

Prairiedawg

I would keep the flywheel and just learn to drive with it. It works fine, you just have to learn the timing and give it a bit more gas with the stab.

Hootsama

Interesting comments. I previously had an E92 335is, in which the DBW throttle actually felt like it was delaying response. That car was a DCT, so no need for H/T, but did the lag was one of my few complaints with that car. My C2S feels more 'connected' and responsive, and I actually don't have issues getting the blip I want with or without Sport mode. Granted, I've had time to adjust to the nuance of heel-toeing a 997 (without pedal mods), plus over the years I seem to have developed a pretty stiff, but controllable roll/jab technique. I think you'll adjust and never look back.