991.2 X51 Powerkit On Sale Again!
07-12-2018, 04:00 PM
#46
OK folks, I'm just a lowly Porsche owner since 1970. And an lowly engineer. And i have read extensively about this topic. I just bought a 991.2 C2S with PSE and SC. I will be adding the aftermarket X51 Power Kit option on my 991.2 C2S at a Porsche dealer, for full factory warranty coverage. And if you know anything about Porsche's warranty coverage history, you know they often cover engine design/production problems well beyond the original warranty, for original buyers of those Porsches.
This X51 Power Kit includes bigger and more exotic low - inertia GTS turbos, special rear brake ducts, PCV valves, fancy carbon-fiber cover over the engine engine lid with "X51 Power Kit" script, and a software revision for the PCM. Yes, the Hp increases only 30 Hp or 7%. But most people will not feel that at speeds under 120 mph. What they will feel different is the 10% increase in torque from 368 to 405 ft-lbs, from 2150 through 5000 rpm. This is HUGE in drive-abilty on the street. Compare it to the more peaky 991.1 GT3 torque of 339 ft-lbs and the 991.2 GT3 torque of 346 ft-lbs. The flat 405 ft-lb torque curve of the X51 3.0 TT is HUGE!
405 ft-lbs of flat-curve torque plus an extra 10% with the SC boost button, for 20 seconds! And you can press that boost button as often as you like! That is HUGE, except on long straights like at LeMans and the Nordschleife, where higher Hp machines like modern GT3s will excel. A And of course the GT3's have the aero kits and lighter weight for quicker handling. But back to this topic...
This is why the "lowly" 991.2 S has been timed at 3.1 sec 0-60, right there even with the recent GT3s, and 11.4 sec in the 1/4 mile, even without the X51.
As you can imagine, thd extra 7% Hp and 10% torque of the X51 Power Kit is nothing faster. And don't forget that SC boost button on the steering wheel for an extra 10% extra boost for 20 seconds. Press it early and often, if you like. With the X51 Power Kit, just imagine those 0-60 times less than 3.1 seconds, and 1/4 mile times better than 11.4 seconds on OEM tires...
Got it?? 😀
This X51 Power Kit includes bigger and more exotic low - inertia GTS turbos, special rear brake ducts, PCV valves, fancy carbon-fiber cover over the engine engine lid with "X51 Power Kit" script, and a software revision for the PCM. Yes, the Hp increases only 30 Hp or 7%. But most people will not feel that at speeds under 120 mph. What they will feel different is the 10% increase in torque from 368 to 405 ft-lbs, from 2150 through 5000 rpm. This is HUGE in drive-abilty on the street. Compare it to the more peaky 991.1 GT3 torque of 339 ft-lbs and the 991.2 GT3 torque of 346 ft-lbs. The flat 405 ft-lb torque curve of the X51 3.0 TT is HUGE!
405 ft-lbs of flat-curve torque plus an extra 10% with the SC boost button, for 20 seconds! And you can press that boost button as often as you like! That is HUGE, except on long straights like at LeMans and the Nordschleife, where higher Hp machines like modern GT3s will excel. A And of course the GT3's have the aero kits and lighter weight for quicker handling. But back to this topic...
This is why the "lowly" 991.2 S has been timed at 3.1 sec 0-60, right there even with the recent GT3s, and 11.4 sec in the 1/4 mile, even without the X51.
As you can imagine, thd extra 7% Hp and 10% torque of the X51 Power Kit is nothing faster. And don't forget that SC boost button on the steering wheel for an extra 10% extra boost for 20 seconds. Press it early and often, if you like. With the X51 Power Kit, just imagine those 0-60 times less than 3.1 seconds, and 1/4 mile times better than 11.4 seconds on OEM tires...
Got it?? 😀
Either way I agree with everything else you said. Can't wait to tune out these turbos.
07-12-2018, 04:27 PM
#47
Rennlist Member
It appears the factory X51 option does include the SC (Sport Chrono) and PSE (Porsche Sport Exhaust) options. Y'all probably knew that but JIC..
BTW, Porsche says the S PDK is good for 3.7 seconds 0-60 mph, and 3.4 seconds for the GTS. So if the magazines tested 3.1 seconds for the S 0-60, what time do y'all expect for an S with the X51 kit?
BTW, Porsche says the S PDK is good for 3.7 seconds 0-60 mph, and 3.4 seconds for the GTS. So if the magazines tested 3.1 seconds for the S 0-60, what time do y'all expect for an S with the X51 kit?
07-12-2018, 06:02 PM
#49
Rennlist Member
07-12-2018, 06:49 PM
#51
For anyone considering x51 on a base .2 its much cheaper to flash the ecu and smaller turbos will spool faster. Both will void warranty anyway. Only reason to get the x51 imo is if youre gonna tune on top of that, but i would argue thats not the best move on stock internals. I remember reading the s and gts have different pistons despite the same displacement
07-13-2018, 12:24 AM
#52
Rennlist Member
07-13-2018, 09:54 AM
#53
**************** is coming out with a kit that has bigger turbos than the GTS models.
07-13-2018, 12:30 PM
#54
Burning Brakes
07-27-2018, 10:57 AM
#55
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BUMP! Sales ends Monday!
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07-27-2018, 05:47 PM
#56
Rennlist Member
07-27-2018, 08:27 PM
#57
Instructor
If if you want more power get the power kit from suncoast, or if want to tune it do yourself and your car a favor and go to a respected and well established tunner. There are a few: COBB, bydesign, and BGB Motorsports, among others.
Last edited by tango131; 07-27-2018 at 11:12 PM.
07-27-2018, 11:28 PM
#58
That sounds like a great idea. Take a $100k car and slap on some turbos from some random and heretofore unknown dude with a website. Yeah, that will end well.
If if you want more power get the power kit from suncoast, or if want to tune it do yourself and your car a favor and go to a respected and well established tunner. There are a few: COBB, bydesign, and BGB Motorsports, among others.
07-28-2018, 12:32 AM
#59
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Screw the warranty and buy an aftermarket tune for a fraction of the money and a lot more power/torque.
07-28-2018, 12:33 AM
#60
Rennlist Member
You surprise me after seeming to talk the other way. I was beginning to wonder if you were trolling here. But i take that thought back. Congrats on making a great choice! Have you watched the YouTube video in the 991.2 GTS of that hot lap on the Nordschleife? It left a strong impression on me. And the magazine test have the GTS 0-60 times right there with the 991.1 and 991.2 GT3s. The S has been clocked at 11.4 seconds in the 1/4 mile. Not sure what the GTS will do, but it has to be fast! Enjoy.