When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
HP = Torque x RPM ÷ 5252 according to Google. To say that HP increases with no increase in torque is a misunderstanding, there simply isn't an increase in peak torque because the power increase doesn't happen at peak torque RPMs.
Here is the torque curve for the 991.1 powerkit. You can see 1) there is no increase in peak torque, and 2) the powerkit only provides more torque than stock when you get over 6500 rpm. I haven't seen the curve for the 991.2 powerkit, but given the dynamics of the turbo, I bet the torque increase is noticeable across a very wide rev range, and importantly at the low end; and the peak torque is up 37.
Here’s the graph for the GTS clipped from the recent Porsche technical video:
991.2 GTS power/torque graph from Porsche
Interestingly, it shows power peaking at 7,000rpm as opposed to 6,500rpm on the Carrera and Carrera S. It’s an official Porsche video but I wonder if the curves were drawn by the marketing department as opposed to the engineers...?
Anyway, I suspect there will be a much more noticeable difference between normal and power kit for the 991.2 compared with the 991.1, for the reasons given in the post above.
I've been reading a lot of the banter on 991.2 base, GTS, Powerkit, making power, etc.
My prediction is that for people that care about making power beyond factory spec that the Powerkit is the worst way to go. (lets set warranty aside and assume that people in this category mod regardless).
For the cost of the powerkit I predict that in the next year there will be >600hp aftermarket options. Likely the S will be the better platform to choose, however... with the minimal engine block differences the base may even be the best option wince aftermarket turbos will be needed to make this kind of power.
For the 991.1 the powerkit is near the power limits we've seen.
Who plans on doing a build for the 991.2?
Couldn't agree more. The potential of this new turbocharged platform is going to be Very high. Likely 500hp without touching the turbos at all. Add turbos to the equation...oh boy haha.
Originally Posted by djcxxx
There may be little benefit to adding the power kit after taking delivery, but the seems little reason not to check the box for the Sport Package that includes the powerkit because you are getting 30HP and 30ft/lb torque for $7K fully factory warranted and installed. I'm not a fan of aftermarket engine work no matter the gains.
Originally Posted by rkwfxd
Not having any first hand experience I question as to whether or not the aftermarket will actually be that much cheaper part for part than the Power Kit.
For example, the $12,000 PK comes with Sport Chrono and Sport Exhaust so that is close to $5,000 of the cost right there. That leaves about $7,000 for larger turbos and tuning. How much do larger turbos cost? How much is the labor to have them installed? What does this do to the resale compared to the factory options?
When it comes to mods does re-sale even matter?
And don't forget the improved brake cooling? That might be needed if you have extra power and actually use it.
30hp/tq is very easily accomplished on these cars, and you don't need bigger turbo or ECU tuning. However, bigger turbos and ECU tuning will net some enormous additional gains down the road as we can see these cars are trying to make some big power on the dyno. For your reference here is a graph of our Sport Headers and Sport Cats on an S PSE gaining about 30whp/wtq from 4k rpm to redline. Cherry on top the exhaust makes the sound pretty superb too haha.
30hp/tq is very easily accomplished on these cars, and you don't need bigger turbo or ECU tuning. However, bigger turbos and ECU tuning will net some enormous additional gains down the road as we can see these cars are trying to make some big power on the dyno. For your reference here is a graph of our Sport Headers and Sport Cats on an S PSE gaining about 30whp/wtq from 4k rpm to redline. Cherry on top the exhaust makes the sound pretty superb too haha.
By adding the FS Sport Headers, no tune is needed? In other words, the stock OEM tune is fine?
What's the estimated power gain by adding just the Sport Cats... on both S and non-S?
Couldn't agree more. The potential of this new turbocharged platform is going to be Very high. Likely 500hp without touching the turbos at all. Add turbos to the equation...oh boy haha.30hp/tq is very easily accomplished on these cars, and you don't need bigger turbo or ECU tuning. However, bigger turbos and ECU tuning will net some enormous additional gains down the road as we can see these cars are trying to make some big power on the dyno. For your reference here is a graph of our Sport Headers and Sport Cats on an S PSE gaining about 30whp/wtq from 4k rpm to redline. Cherry on top the exhaust makes the sound pretty superb too haha.
Updated engine HP numbers with the addition of the 991.2TTS and 991.2 base: Area under the torque curve HP from 4000rpm to redline and HP at 4000rpm.
991.2TTS 504HP (4000-7200) and 393HP @ 4000rpm
991.2GTS 408HP (4000-7500) and 308HP @ 4000rpm
991.2S 375HP (4000-7500) and 282HP @ 4000rpm
991.2 330HP (4000-7500) and 253HP @ 4000rpm
991.1GT3RS 387HP (4000-8700) and 199HP @ 4000rpm
991.1GT3 365HP (4000-9000) and 185HP @ 4000rpm
991.1GTS 342HP (4000-7700) and 217HP @ 4000rpm
991.1S 338HP (4000-7700) and 213HP @ 4000rpm
The Porsche kit is clearly the way to go - look at the graph for the GTS, look at the table above, look at the values - Porsche understand the engines far better than XYZ tuners and that is why they have designed the power kit the way it is.
Tuners "all care and no responsibility" and to those of you that go for the budget option, when you go to sell your car, ensure you tell the potential buyers you have had a device attached to reflash the ECU. Also tell your insurance company. Be honest.
If your car is a daily there is absolute zero point in getting a budget tune - non.
If you're going to do the budget route - ask four simple questions:
1) How many cars were used to develop the "budget" tune in the 991.2 line up
2) Will the "budget" tune affect the engine longevity
3) What is the actual total HP gain across the torque curve (as opposed to peak HP gain)
4) If my engine/clutch/gear box goes bang will you, the tuner, replace the engine/clutch/gear box at your cost and at a repairer of my choice
The rule is "Pay to Play" which means when you start screwing with engines etc you have to accept the fact you may may to replace one (gear box/ clutch etc).
In the main you are far better off getting high performance driving training - 99% of people on this site are unlikely to be able to drive a base Carrera to its full potential.
02-08-2017, 12:36 PM
