Prospective 981 GT4 Owners Discussion Forum.

[mdianuk]

Porsche911R said:

lol the difference between real enthusiasts and the run of the mill owner I guess.

Not really, not all enthusiasts wish to change the setup that was professionally decided upon by the GT team. Having said that, your changes sound interesting, so keep us updated.

[apachesmith]

W12JFD said:

Feirny said:

Has this been mentioned on here yet?

http://www.copart.co.uk/uk/Lot/13968016?searchId=1...

That really is quite a scratch! And only 200 miles!!

That looks like the one Toms mate wrote off?

[W12JFD]

apachesmith said:

That looks like the one Toms mate wrote off?

It doesn't look like the damage will be recorded on the ABI register so I'm guessing track insurance? Or perhaps no insurance?

[mdianuk]

Feirny said:

Has this been mentioned on here yet?

http://www.copart.co.uk/uk/Lot/13968016?searchId=1...

Looks like Tom's old car; he's since replaced with a GT Silver model.

[GT4P]

Question: Why do we think the fuel consumption of the gt4 is not good ie someone posted their 991 gt3 was better, could it be the engine restrictions are causing this for instance the smaller Cayman throttle body? And will fitting the larger throttle body improve power and fuel economy or would you have to do the exhaust and a ecu remap?

[Porsche911R]

mdianuk said:

not all enthusiasts wish to change the setup that was professionally decided upon by the GT team. .

That same old bullst lol Porsche know best, that's why we have a understeering car with a 74MM 3.4 throttle body on it, and NON adjust rear toe links so the end user cannot change the set up !

now go and find what the real CS car has, 18" wheels, smaller brakes, fully adjustable sus in the rear etc etc.

As I said, a driving enthusiasts will change a car from oem spec, most won't.

[Porsche911R]

GT4P said:

Question: Why do we think the fuel consumption of the gt4 is not good ie someone posted their 991 gt3 was better, could it be the engine restrictions are causing this for instance the smaller Cayman throttle body? And will fitting the larger throttle body improve power and fuel economy or would you have to do the exhaust and a ecu remap?

good question the GT4 mpg sucks !!!

and no you cannot just fit a 83mm Throttle body on the car it will run rich !

[LaSource]

Is fuel consumption higher for an engine in its early run in period?

[Porsche911R]

apachesmith said:

Are you running Steels? My only experinece in the GT4 is the Carbons at PEC? Are there noticeable differences with the steels?

I run steels yes, did not see the point on PCCB on this car, I would say a well set up iron disk car with track pads may well have more bite and stop better than the pccb set up this time round.

PCCB you are pretty much screwed to which pads to use on the ceramic disks. iron disks you can run a race winning pad like Endless.

ALso one may want to run 19" wheels for track use, which fit fine over the 380mm disks. 410MM disks limit options for wheels and pads.

AP and Brembo already make nice 2 piece iron disks in 380mm sizes also for a straight swap once oem disks have worn out.
I love PCCB's on lesser models as you end up with big brakes, over smaller 4 pots and tiny disks, the GT4 was given big brakes from the get go.

[Porsche911R]

LaSource said:

Is fuel consumption higher for an engine in its early run in period?

yes but it should not be by this much, the gt4 is really bad on MPG :-(

[giles panizzi]

I'm 2000 miles in and recently I would say MPG is 20% better than at new.....

[anissut]

Porsche911R said:

yes but it should not be by this much, the gt4 is really bad on MPG :-(

Considering 90% of all GT4 owners won't do more than 5k miles a year it really makes little difference in the overall scheme of things.

[apachesmith]

Porsche911R said:

I run steels yes, did not see the point on PCCB on this car, I would say a well set up iron disk car with track pads may well have more bite and stop better than the pccb set up this time round.

PCCB you are pretty much screwed to which pads to use on the ceramic disks. iron disks you can run a race winning pad like Endless.

ALso one may want to run 19" wheels for track use, which fit fine over the 380mm disks. 410MM disks limit options for wheels and pads.

AP and Brembo already make nice 2 piece iron disks in 380mm sizes also for a straight swap once oem disks have worn out.
I love PCCB's on lesser models as you end up with big brakes, over smaller 4 pots and tiny disks, the GT4 was given big brakes from the get go.

Thanks.... good to know.

[apachesmith]

Quick question...

My car completed build yesterday so should have the car in the next 2-3 weeks. I haven't heard from the dealer for a few months and was wondering is there any pre-delivery paperwork or registration paperwork I need to fill out before the car arrives?

Or is it literately pitch up give them my bank card, do the paperwork there and then and drive off?

Cheers

[av185]

On the high mpg, as previously posted, try driving without the sport button......gets rid of the blipping so you can heel and toe down the drive properly thus genuinely impressing the distant neighbours........more importantly it cuts off the extra front cooling rad so the car runs hotter therefore more economically.

[paralla]

The splitter and wing probably create more aerodynamic drag than the standard Cayman. More drag = less economy. I haven't seen a Cd number for a GT4 anywhere. No idea how much difference it makes to economy but must make some.

[anissut]

av185 said:

On the high mpg, as previously posted, try driving without the sport button......gets rid of the blipping so you can heel and toe down the drive properly thus genuinely impressing the distant neighbours........more importantly it cuts off the extra front cooling rad so the car runs hotter therefore more economically.

What would be the fun in that though?

[mdianuk]

Porsche911R said:

As I said, a driving enthusiasts will change a car from oem spec, most won't.

Sure, but doesn't make them any less an enthusiast; just different requirements/expectations from their car.

[Porsche911R]

apachesmith said:

Quick question...

My car completed build yesterday so should have the car in the next 2-3 weeks. I haven't heard from the dealer for a few months and was wondering is there any pre-delivery paperwork or registration paperwork I need to fill out before the car arrives?

Or is it literately pitch up give them my bank card, do the paperwork there and then and drive off?

Cheers

mine took 5 weeks, but no extra paper work, I did go in a pick a reg plate from the list they have though.

[mdianuk]

paralla said:

The splitter and wing probably create more aerodynamic drag than the standard Cayman. More drag = less economy. I haven't seen a Cd number for a GT4 anywhere. No idea how much difference it makes to economy but must make some.

Yep, but the comparison isn't against the standard Cayman, but the 991 S. The difference in MPG seems significant, some down to aero no doubt, but will be interesting to see what figures are reported without the sport button pressed.