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NOW for something that may or may not be an upgrade for the street BUT it's something that i made to try and address the single biggest engine holdback for a Cayman vs. the 911. Porsche issued an intake upgrade for the Clubsport for $6200 that was a nicely 3-D printed intake that was mated to a 992 GT3 airbox. We went ahead and made our own for the 981. Again, it's something that you will want your shop to install but over the next week we will be listing pricing, availability AND taking orders. This was good enough to reduce the IATs on the 4.2L PDK Colonel Mustard to within 5F of the ambient. On the race car we are seeing an additional 2 - 3 mph on the straights from this intake now that the car is not sucking hot air!
When will the intake go into official production? I’m definitely interested! Is there an engine cover for it since I daily drive my car?
I have enough parts to have 5 kits assembled at the moment. 3 are spoken for and 2 are not! I have pricing as well. I just need to finish the walkthrough!
Originally Posted by CAlexio
So you're preempting porsche with what they're putting in the GT4RS? Nice.
I'm anxious to find out if the car we have seen was a GT4RS test mule for the window intakes OR if that's what's actually coming on the RS. If it's the latter, i'm excited because i want to see what they do to the road car for that application. This is basically something we made to offer folks with DE / race cars that don't want to shell out $6500 for the factory kit. I have a road car version prototype as well with drains, etc that will have a template to get any water out of the cabin. Right now on the factory race car rain water runs into the tubing and then drains out of the box onto the bare floor. Our kit drains it out the bottom from the factory drains!
I have enough parts to have 5 kits assembled at the moment. 3 are spoken for and 2 are not! I have pricing as well. I just need to finish the walkthrough!I'm anxious to find out if the car we have seen was a GT4RS test mule for the window intakes OR if that's what's actually coming on the RS. If it's the latter, i'm excited because i want to see what they do to the road car for that application. This is basically something we made to offer folks with DE / race cars that don't want to shell out $6500 for the factory kit. I have a road car version prototype as well with drains, etc that will have a template to get any water out of the cabin. Right now on the factory race car rain water runs into the tubing and then drains out of the box onto the bare floor. Our kit drains it out the bottom from the factory drains!
They didn't put those grills there for fake looks Ford mustang style.. and the latest mules with even more extended intakes clearly imply that they're trying to take in more air.. you're on to something clearly.
I have enough parts to have 5 kits assembled at the moment. 3 are spoken for and 2 are not! I have pricing as well. I just need to finish the walkthrough!
I'm anxious to find out if the car we have seen was a GT4RS test mule for the window intakes OR if that's what's actually coming on the RS. If it's the latter, i'm excited because i want to see what they do to the road car for that application. This is basically something we made to offer folks with DE / race cars that don't want to shell out $6500 for the factory kit. I have a road car version prototype as well with drains, etc that will have a template to get any water out of the cabin. Right now on the factory race car rain water runs into the tubing and then drains out of the box onto the bare floor. Our kit drains it out the bottom from the factory drains!
Could it be that PAG figured out how to make those covered storage cubbys (that nobody I know ever uses) under the rear window useful by channeling the air that way into the existing side intakes and thereby use the existing drain holes. That would solve the certification issue and make for a cleaner way to get the cooler air to the intake for a production, street legal version.
Hey guys, i am wondering if we are having actual confirmed numbers as to engine HP gains from the various mods + list of "best bang for buck" mods? Ideally even 60-120mph driftbox/dragy numbers before and after certain mods.
My current understanding - best bang for buck:
1) Headers (about 20+ HP catted, 40 dundon race headers) -> Midrange and torque dip 80% eliminated
2) Headers + Protune (30-40 HP) -> Midrange and torque dip 95% eliminated
3) IPD + gt3 TB (very little hp and tq gains by itself, potentially better in low rev range)
4) Lightweight Single Mass Flywheel - faster revving => better acceleration
5) Dundon Intake Runners (20-50+ HP + 100+HP at close to rev limiter -> reaching gt3 style climb of power into rev limiter - works better with IPD/TB in place)
High HP and TQ gains then with high investments north of 20k USD:
x51 kit, 4.0 or 4.25l engine conversions etc.
would be interested in your opinion and actual numbers (not just dyno charts, but also those)
I
I'm anxious to find out if the car we have seen was a GT4RS test mule for the window intakes OR if that's what's actually coming on the RS. If it's the latter, i'm excited because i want to see what they do to the road car for that application.
More finished that what I saw at Weissach 2 1/2 years ago on the RS mule.
Could it be that PAG figured out how to make those covered storage cubbys (that nobody I know ever uses) under the rear window useful by channeling the air that way into the existing side intakes and thereby use the existing drain holes. That would solve the certification issue and make for a cleaner way to get the cooler air to the intake for a production, street legal version.
That's what I'm waiting for. I figured the path of least resistance and the only way to not cannibalize useful trunk space would be to get it from there and get it down into the engine bay via those cubbies that are useless except for hiding road trip snacks! or they're gonna block off the trunk and do fancy carbon versions of what we have on the race car.
Originally Posted by Whoopsy
More finished that what I saw at Weissach 2 1/2 years ago on the RS mule.
Ahhh yes...who can forget the day you visited and turned the 718 GT4 forum world on its head!?
Originally Posted by Martin Anders
Hey guys, i am wondering if we are having actual confirmed numbers as to engine HP gains from the various mods + list of "best bang for buck" mods? Ideally even 60-120mph driftbox/dragy numbers before and after certain mods.
My current understanding - best bang for buck:
1) Headers (about 20+ HP catted, 40 dundon race headers) -> Midrange and torque dip 80% eliminated
2) Headers + Protune (30-40 HP) -> Midrange and torque dip 95% eliminated
3) IPD + gt3 TB (very little hp and tq gains by itself, potentially better in low rev range)
4) Lightweight Single Mass Flywheel - faster revving => better acceleration
5) Dundon Intake Runners (20-50+ HP + 100+HP at close to rev limiter -> reaching gt3 style climb of power into rev limiter - works better with IPD/TB in place)
High HP and TQ gains then with high investments north of 20k USD:
x51 kit, 4.0 or 4.25l engine conversions etc.
would be interested in your opinion and actual numbers (not just dyno charts, but also those)
I can give you my guesstimate about crank numbers but all I have is dyno data from our dyno and dynos other customers have visited. Those numbers you mention are peak gains used for marketing purposes. Using conservative, real world, repeatable numbers and without differentiating between what mods make torque and which ones don't, the gains are as follows.
A tune at the crank is worth 13ish,
Headers are worth 15ish without cats and half as much with cats.
Larger TB is worth about 6-7 over 5K RPM,
Additional crank data that I have been able to back up on my dyno using a 12.5% drivetrain loss is as follows.
Outside of tuning and mods, basic bore and stroke increases to your Porsche air pump are as follows. A 3.8L is a bore increase over a 3.4L and makes an additional 40hp and 25 lb/ft over a 3.4L. An engine stroked further to 4.0L makes another 25 lb/ft of torque and close to 10hp. A 4.2L makes another 40hp and 25 lb/ft. An X51 Power Kit with CNC porting makes an additional 30HP at the crank.
Without sounding overly conceited or confident, I don't agree with anything that contradicts those numbers. Every single one of those motors we have built dynos out on our dyno and other peoples' Dynojets within 5hp of each other. Porsche builds great engines but if you want real proven numbers, there you go! No extra creme or sugar in the coffee!
That's what I'm waiting for. I figured the path of least resistance and the only way to not cannibalize useful trunk space would be to get it from there and get it down into the engine bay via those cubbies that are useless except for hiding road trip snacks! or they're gonna block off the trunk and do fancy carbon versions of what we have on the race car.
Ahhh yes...who can forget the day you visited and turned the 718 GT4 forum world on its head!?
I can give you my guesstimate about crank numbers but all I have is dyno data from our dyno and dynos other customers have visited. Those numbers you mention are peak gains used for marketing purposes. Using conservative, real world, repeatable numbers and without differentiating between what mods make torque and which ones don't, the gains are as follows.
A tune at the crank is worth 13ish,
Headers are worth 15ish without cats and half as much with cats.
Larger TB is worth about 6-7 over 5K RPM,
Additional crank data that I have been able to back up on my dyno using a 12.5% drivetrain loss is as follows.
Outside of tuning and mods, basic bore and stroke increases to your Porsche air pump are as follows. A 3.8L is a bore increase over a 3.4L and makes an additional 40hp and 25 lb/ft over a 3.4L. An engine stroked further to 4.0L makes another 25 lb/ft of torque and close to 10hp. A 4.2L makes another 40hp and 25 lb/ft. An X51 Power Kit with CNC porting makes an additional 30HP at the crank.
Without sounding overly conceited or confident, I don't agree with anything that contradicts those numbers. Every single one of those motors we have built dynos out on our dyno and other peoples' Dynojets within 5hp of each other. Porsche builds great engines but if you want real proven numbers, there you go! No extra creme or sugar in the coffee!
thank you for the great info and open and honest numbers - always much appreciated - some people tell you they get 40+ hp for the 3.8. via software only
am i correct, that some of your numbers are for 3.4 Boxster S/GTS as baseline, or are you referring to gt4/spyder?
did you hear or have experience with the intake runners (e.g. dundon intake runners run at around 4k usd uninstalled and promise to free up the top end - but need plenum/TB to work as preqrequisite.
would you recommend headers + tune for sure? (also sorting out the midrange throttle dip)
plenum/TB maybe on top, or not necessarily?
I updated my 981 GT4 to a custom tune using Dundon intake runners, IPD plenum, and GT3 throttle body which resulted in ~377 HP to the wheels (baseline was about ~350 before mods).
This was with factory PSE and no other mods.
Makes it about 425HP using 12.5% driveline loss and a much smoother power curve from stock.
02-11-2020, 02:46 PM
your shop is a lot closer to me 
or they're gonna block off the trunk and do fancy carbon versions of what we have on the race car. 
