Prospective 981 GT4 Owners Discussion Forum Vol 2
Discussion
BubblesNW said:
Ian, check the key fob, there's a key hidden inside, flick the little switch on the back and pull it out...
Well fook me, I didn't realise, just thought it was to release the battery or something. I've literally brought the car home, parked it up and carried on working; I'm a bloke, the instruction book is already tucked away and I'm too *busy to read it.Does a double click of the lock button add dead-locks? I know a double click of the open key opens both doors of course.
- lazy
BubblesNW said:
ChrisW. said:
--- made me laugh OK, so where does all the fuel inefficiency go ... into exhaust noise ?
isaldiri said:
BubblesNW said:
ChrisW. said:
--- made me laugh OK, so where does all the fuel inefficiency go ... into exhaust noise ?
honest question mrd if a remap only gives the power or more of a 991s then how comes the 991s has a bigger TB? I cannot see those power gains from remap only!
the ipd plenum wont give extra power its only there to accommodate the larger TB!
imo to release the gt4 power and efficiency then TB,plenum and remap should be done together and for the full monty race or sports headers.
the ipd plenum wont give extra power its only there to accommodate the larger TB!
imo to release the gt4 power and efficiency then TB,plenum and remap should be done together and for the full monty race or sports headers.
isaldiri said:
Is the gt4 really as inefficient as it's made out to be...? I got 27-28mpg on the motorway going to the 'ring over the weekend and on track at Silverstone the gt4 was positively frugal compared to some other cars I've tracked.
I have also seen 28-29 mpg on a run which is what I expected but cannot comment on track economy,but what I do notice is it does take a long time to climb to high mpg ie if I leave a garage that joins free flowing traffic of 50 mph my 987 spyder would rise to high mpg quiet quickly but the gt4 takes many miles!
GT4P said:
honest question mrd if a remap only gives the power or more of a 991s then how comes the 991s has a bigger TB? I cannot see those power gains from remap only!
the ipd plenum wont give extra power its only there to accommodate the larger TB!
imo to release the gt4 power and efficiency then TB,plenum and remap should be done together and for the full monty race or sports headers.
I have a 991S 3.8L fitted by Ehresmann in my PDK 981 Cayman S. The tune enables the benefits of larger throttle body/IPD plenum/200 cell cat headers as well as avoiding CELs. The tune by its self has limited effect. When mapping mine, MTO replaced the car's 981S maps with 991S PDK maps and then optimised for the plenum, air filter and headers.the ipd plenum wont give extra power its only there to accommodate the larger TB!
imo to release the gt4 power and efficiency then TB,plenum and remap should be done together and for the full monty race or sports headers.
As I recall from my research, the IPD plenum is more efficient than OEM part because of former's internal design which incorporates dimples that I recall accelerate air flow in the same way the dimples on a golf ball work.
GT4P said:
honest question mrd if a remap only gives the power or more of a 991s then how comes the 991s has a bigger TB? I cannot see those power gains from remap only!
the ipd plenum wont give extra power its only there to accommodate the larger TB!
imo to release the gt4 power and efficiency then TB,plenum and remap should be done together and for the full monty race or sports headers.
The same guy has dyno all areas, the tune gives best bang for your money,the ipd plenum wont give extra power its only there to accommodate the larger TB!
imo to release the gt4 power and efficiency then TB,plenum and remap should be done together and for the full monty race or sports headers.
Look at the x51 kit it still states you get the 76mm tb on the 911 3.8.
The 82mm is part of the x51 kit.
Why would a trusted tuner lie if he can sell parts and fitting, if he says you get no extra peak bhp from the tb then I,ll take his word for it.
I have tuned my 997.2 car and it also did not need the TB and some tuners say it don't need it.
Ie. the guy who made the maps for the Cayman spec race cars !
Why fit the parts if a tune gets you 412ps ? The TB is worth it though as that torque dip looks big so to smooth that out you may as well do the TB for the small extra money. Torque wins races :-) and helps with the ultra long gearing and at 5k you are going to notice a torque gain in the bum dyno for sure.
The manafolds are never worth doing on the 911's as an example, and on the GT4 will only net you another 10ps for £3k again Don,t seem worth doing £3k of manafolds for 10ps.
The fab speed manafolds loose you bhp higher up the Rev range and only gain -at 3k revs, I am never at 3k revs, the car only comes alive at 4.5k revs so I keep the GT4 over that.
Beware tuners talks of bhp gains as they don't quote peak gains they quote a large number at low rpm !!
You loose bhp where you really want the gain !
Spend the £3k on car set up or a set of real 2 way passive shocks over manafolds.
I think most people would be happy with a proper map only over the Porsche deftuned item to take you > 400bhp.
No hard ware and it's a do it your self plug and play tune.
Edited by Porsche911R on Saturday 18th June 08:24
I've used Dms automotive in the past but never on Porsches,the GT4 is'nt quoted on their website so has anybody talked to them bearing in mind their excellent reputation.I've more or less decided on a tune based on the sad fact that Porsche marketing has dictated what hp the GT4 is allowed to have!.
Edited by Taffy66 on Saturday 18th June 09:32
GT4P said:
So in conclusion the map , tb and plenum is all you need to do to get the best from the car? By the way who is the tuner for the remap?
Ehresmann Automotive GmbH.well you can fit the manifolds, but as I stated better off fitting some passive shocks with that £3k over manafolds.
I would NOT use DMS they are not a Porsche tuner the last poster here to have a DMS Porsche tune got a 5bhp gain after a RR Dyno at Surry RR.
Porsche911R said:
Ehresmann Automotive GmbH.
well you can fit the manifolds, but as I stated better off fitting some passive shocks with that £3k over manafolds.
I would NOT use DMS they are not a Porsche tuner the last poster here to have a DMS Porsche tune got a 5bhp gain after a RR Dyno at Surry RR.
DMS are more for your bmw, merc etc!well you can fit the manifolds, but as I stated better off fitting some passive shocks with that £3k over manafolds.
I would NOT use DMS they are not a Porsche tuner the last poster here to have a DMS Porsche tune got a 5bhp gain after a RR Dyno at Surry RR.
Ehresmann have proven track record, did they not do gtsralph,s car.
What about the Cobb plug and play?
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