Sports Chrono 991
Sports Chrono 991
Author
Discussion

Vipergreen

Original Poster:

340 posts

259 months

Wednesday 20th June 2012
quotequote all
Is sports chrono an essential extra on a PDK 991 given that it now includes dynamic engine mounts

Vipergreen

Original Poster:

340 posts

259 months

Wednesday 20th June 2012
quotequote all
Put another way has anyone spec'd without sports chrono

Phooey

13,868 posts

199 months

Wednesday 20th June 2012
quotequote all
Yes imo - it's essential, in order to get 'sports-plus' mode.

"Dynamic engine mounting, analogue and digital timer system, 'SPORT PLUS' button in centre console. Effect to PSM, PASM (option), PDCC (option) and sports exhaust system (option). In conjunction with PDK additional: SPORT PLUS including activation launch control and shift strategy racetrack, steering wheel with additional indication SPORT, SPORT PLUS and launch control. In conjunction with PCM with additional performance indiction"



Acceleration from 0 - 62 mph = 4.3 secs (4.1 secs Sport+)
Acceleration from 0 - 99 mph = 9.0 secs (8.7 secs Sport+)


I'd not buy a PDK without SC


Tony 1234

3,465 posts

257 months

Wednesday 20th June 2012
quotequote all
It's on my car and I'm sure most other 991S's out there.

BnB

1,059 posts

205 months

Wednesday 20th June 2012
quotequote all
I'm not a fan of Sport Plus since you can achieve the same in manual mode with more flexibility. Always finding yourself in first gear at 50mph gets a little wearing. Fine on the track but give me manual paddles on the road.

Nevertheless I speced Sports Chrono for the added slip in PSM's operating parameters and now the new DEM.

Phooey

13,868 posts

199 months

Wednesday 20th June 2012
quotequote all
Sport Plus can be harsh admittedly. You wouldn't want to drive through the city in S+, unless you want to look a complete nob, but for those moments when the red mist drops...

...and Vmax smile

Blue62

10,587 posts

182 months

Wednesday 20th June 2012
quotequote all
Haven't gone into Sports + as I'm still running in, but would it not just sharpen up the throttle response if left in manual mode?

supermono

7,464 posts

278 months

Wednesday 20th June 2012
quotequote all
Blue62 said:
I'm still running in,
Really? In this day and age? Genuinely surprised that you were told to do that.

SM

Ekona

1,684 posts

232 months

Wednesday 20th June 2012
quotequote all
Blue62 said:
Haven't gone into Sports + as I'm still running in, but would it not just sharpen up the throttle response if left in manual mode?
It does, assuming it's the same as the 997. I always put mine in Sports+ and manual mode when out for a fun drive, so I get the benefit of a slacker PSM, sharper throttle and the quicker/harsher upshifts, whilst still retaining control of the gear selection. smile

Blue62

10,587 posts

182 months

Thursday 21st June 2012
quotequote all
supermono said:
Really? In this day and age? Genuinely surprised that you were told to do that.

SM
I always run my cars in, under 3000rpm for the first few hundred miles and build it up to 4000rpm to 1000 miles, then I gradually give it the beans. Always bed in brakes and tyres for a couple of hundred. I run my cars in out of respect for the machinery I am fortunate enough to own and the fact that I want the next keeper to get as much pleasure from it as I will. The handbook states 1800kms as the running in period but offers no further advice, which is why there are so many discussions about running-in and seemingly conflicting opinions!

Edited by Blue62 on Thursday 21st June 09:48

Tony 1234

3,465 posts

257 months

Thursday 21st June 2012
quotequote all
supermono said:
Blue62 said:
I'm still running in,
Really? In this day and age? Genuinely surprised that you were told to do that.

SM
Running in period as per my manual = 1800 'miles'

supermono

7,464 posts

278 months

Thursday 21st June 2012
quotequote all
Blue62 said:
I always run my cars in, under 3000rpm for the first few hundred miles and build it up to 4000rpm to 1000 miles, then I gradually give it the beans. Always bed in brakes and tyres for a couple of hundred. I run my cars in out of respect for the machinery I am fortunate enough to own and the fact that I want the next keeper to get as much pleasure from it as I will. The handbook states 1800kms as the running in period but offers no further advice, which is why there are so many discussions about running-in and seemingly conflicting opinions!

Edited by Blue62 on Thursday 21st June 09:48
Well it's your car you should do whatever makes you happy, but inventing a running in schedule may not achieve what you want. If you read smokey yunick's power secrets and alan cathcart's superbike books you'll find out the ideal way of bedding in rings especially, and that's probably the opposite of your gut instinct.

Last new car i bought was only a peugeot diesel but I ran that in according to the supposedly mehanically unsympathetically way detailed there and it's sweet as a nut 110k on the clock, no oil use, no issues. Bikes the same, never had any mechanical woes.

Worth a read I reckon.

SM

SFO

5,190 posts

213 months

Thursday 21st June 2012
quotequote all
manual says "avoid high engine speeds" ..

it doesn't say what high means, nor does it say do not use high engine speeds.

IMHO, the ocassional foray into the upper reaches of the rev ranges is fine.

supermono

7,464 posts

278 months

Thursday 21st June 2012
quotequote all
SFO said:
IMHO, the ocassional foray into the upper reaches of the rev ranges is fine.
Not just fine but essential to get the best life and power from the engine/rings.

Sustaining high loads is bad news though but blasts right to the max from first warmed up from new is important.

Blue62

10,587 posts

182 months

Thursday 21st June 2012
quotequote all
SFO said:
manual says "avoid high engine speeds" ..

it doesn't say what high means, nor does it say do not use high engine speeds.

IMHO, the ocassional foray into the upper reaches of the rev ranges is fine.
And therein lies the problem, it is not definitive and open to interpretation. I've heard all the arguments about running in and will stick with what I've always done, it's funny that a mate of mine took delivery of a brand new Ducatti a few weeks ago and on the advice of the dealer he ran it in for 800 miles, which meant keeping the revs down.


Edited by Blue62 on Thursday 21st June 11:53

supermono

7,464 posts

278 months

Thursday 21st June 2012
quotequote all
Blue62 said:
I've heard all the arguments about running in and will stick with what I've always done,
That's cool, but for me every day is a school day. I crave knowledge and better ways of doing stuff.

SM

Blue62

10,587 posts

182 months

Thursday 21st June 2012
quotequote all
supermono said:
That's cool, but for me every day is a school day. I crave knowledge and better ways of doing stuff.

SM
I didn't say that, I said I've heard the arguments and will stick with what I know and I'm inclined to take the advice of the manufacturer, just like my Duke owning pal. The issue with Porsche is that the advice is unclear.

supermono

7,464 posts

278 months

Thursday 21st June 2012
quotequote all
Interestingly if your mate's Ducati dealer told him to "keep the revs down" he'd be able to hold full throttle, midrange up a hill with someone on the back for an extended period.

Exactly the worst thing you can do.

It's best to read what engineers write on the subject, dealer advice is usually well meaning but technically vacuuous.

SM

Blue62

10,587 posts

182 months

Thursday 21st June 2012
quotequote all
supermono said:
Interestingly if your mate's Ducati dealer told him to "keep the revs down" he'd be able to hold full throttle, midrange up a hill with someone on the back for an extended period.

Exactly the worst thing you can do.

It's best to read what engineers write on the subject, dealer advice is usually well meaning but technically vacuuous.

SM
Funnily enough he is a mechanical engineer by profession!

supermono

7,464 posts

278 months

Thursday 21st June 2012
quotequote all
I thought you were quoting the dealer's advice? Good that your mate knows better than to follow it.

Apoligies to the OP, just realised I've ruined the thread.

SM