catdog2

Just traded in 718 Spyder for a 2018 GT3 Touring and happy with engine of course and overall handling but seriously upset about how throttle response is stifled when trying to perform old fashioned double clutch rev-matching on downshift... it just is not allowed whereas it was perfectly possible in the 718 Spyder...

For instance when going from 3rd to 2nd, clutch goes in, gear goes from 3rd to neutral, throttle is blipped to get revs up enough to match the expected range when the clutch goes back in and second gear is selected..

Well it's impossible to rev high enough when gear is in neutral even though car is moving to enable classical double clutch downshift, something that was perfectly possible in the 718 Spyder and is major source of enjoyment.

Any thoughts or recommendations? I'm kinda pissed right now....

all these bull**** reviews about 911 R and GT3 touring being best thing since sliced bread and this serious shortcoming has never surfaced?????

tqevo

I didn't know this. So the car won't let you rev in neutral? That's dumb. What happens at standstill?

catdog2

Well in neutral at standstill it has a soft rev limiter and that's fine just like my RS but when in motion just can't rev high enough to perform proper double clutch downshift

tqevo

But if you were in gear with clutch in the rev limiter gets raised? That makes no sense. The gearing isn't that tall especially cruising you shouldn't have to rev very much. Sounds like they want you to use the rev match and/or not double clutch

catdog2

Basically it looks like unlike in other Porsches including the Spyder you can't do classical double clutching downshift...

only way to rev match in gt3 is while clutch is depressed and then it will rev as high as you want but that is not classical double clutching revmatching

Too bad I had to buy one to find out...

_RS_

That's interesting. Having happily moved on from decades of a foot clutch, I have never seen it mentioned that the GT3 MT cannot support this synchromesh saving and normal MT driving style.
Perhaps synchro cones are more hardwearing than they used to be because the modern throttle blip gizmo doesn't get the input and layshafts up to speed because the clutch is depressed.
I've only once rebuilt a gearbox to mainly replace the bald 1st and 2nd synchro cones on a car used for a lot of rallying, I swear that was more work than rebuilding an engine.

catdog2

thank you! Finally someone who understands what I'm talking about ... I just can't believe the hype and BS drudged up about the MT GT3 and this doesn't even feature as a sore point? That's one of the major fun points of my manual F430 and the Spyder I just traded in ..

168glhs1986

Is Porsche's auto rev match in sport mode not exciting enojgh for you? My downshifts at 5k plus are glorious.

vantage

I’m guessing it never surfaced during reviews because very few people double clutch since (1) the box has synchros and (2) it is slower then a single clutch in/out.

catdog2

no it's not, if I get a manual it's to properly handle it like manuals have been for eons...

TheDangerZone

Damian at thecarguys.tv YouTube channel mentioned it on one of his reviews. He owns the car himself and it is a bit of a sore point for him, basically one of his only complaints.. so if it makes you feel any better, you’re not alone.

famoruwa

Remap the ECU?

Buddhamonk

So disappointing…

CAlexio

I had to re-read this, why would you double-clutch on a car with synchros? isn't that like doing a winding motion with your hand in a car with electric windows? Or using any motion which is not needed for a specific device? Why did you stop adjusting the carbs on your GT3?

All friendly kidding aside, rev-matching requires one press of the clutch, not two.. since Porsche of all brands patented the split synchromesh system in 1947!!!

catdog2

and yet it can be done in any other lowly Porsche including 718 GT4/Spyder, a newer model than 991.2 GT3 manual/touring.

btw, anyone knows if 992 manual/touring behaves similarly in this regard to the 991.2 ?