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with my EU car i also don't feel like valves are closed.
what\s the way to verify? place a gopro near the valves and see what happens?
Well, unless something on your car is broken they're all going to operate the same. However, on a completely factory car the exhaust is so restrictive that the difference between valves closed and open isn't that noticeable, and they're closed most of the time anyway due to the factory PSE programming. It might just be you can't pick up on the valves changing, but you are right a gopro mounted under there pointing at the valve bodies will show you if they're functioning. You can also have someone hit the PSE button at idle while you're looking under the car and the valves should open, at least until you start to drive away haha.
Best regards,
John Gaydos
__________________ SOUL PERFORMANCE PRODUCTS Quality Exhaust Solutions, Fair Pricing, and Outstanding Service
John Gaydos- Owner, Performance Specialist
Cell - (484) 883-6197 johng@soulpp.com
So far the race exhaust with the over the axle pipes is the winner on sound for me. The Gretzky... or “post #99” above for those uninitiated to the greatest team sport ever.
A little surprised to hear it more uncorked being less satisfying than something less than... but so it is. Good news is that #99 combo sounds flat out fantastic (pun intended).
I would however love to hear a 981 with stock PSE open setting run the same road under same mic conditions etc. and see how things are shaping up in that regard. Yes I can do without some of the 981 crackle and pop theatrics but for presence and tone it is the pinnacle until it can be proven to be toppled.
We have a valve control solution. Most of you know by now that the PSE programming is incredibly invasive. Even with the button pushed the valves will close under acceleration under near 5k rpm. Even with our Competition Over Axle Pipes deleting the particulate filters, this PSE programming still neuters the fun under 5k when you don't want it to. This can be installed to override the PSE system and keep the valves open 100% of the time. It can also then be deactivated and allow the PSE programming to function as normal. Switching between the two can be controlled by the included key fob, OR you can sync the signal of the key fob buttons to two of your three Homelink garage door buttons. The installation of this kit was fully documented with photos, and we made a video of how to sync the key fob functions with your Homelink system. These will be available shortly, and the valve controller kit is available to order for $175.
Ditching the factory cats and the particulate filters together with a combination of our Competition Headers and Competition Over Axle Pipes (maintaining factory PSE muffler), the car pulls Much harder without a doubt. This car has a lot of performance potential, and I very much look forward where software takes this car on top of this in the near future. The sound of this particular configuration eliminating the cats and the filters at the same time has a more raw character to it than just deleting the particulate filters or our race exhaust system, and has an excellent mild to wild transition for those that want to fly under the radar when not having an adrenaline rush. We will have a video of this setup posted up shortly.
When driving the car on highway with factory exhaust and factory PSE control....If you're cruising at a steady 3k rpms (at least that's where I tested it on a short highway drive) and you breathe on the throttle it introduces a very odd droning/fluttering noise. I confirmed this with multiple GT4 owners, and we believe this is either associated with cylinder deactivation, factory PSE valve control, or perhaps a combination of both. Keep in mind that this is normal with this new vehicle's platform and seems to only happen if you hit some sort of sweet spot with throttle input at cruising speed. The current development car is on it's way out the door and back to the customer to start beating on up at Monticello. Further testing will be done on this car and the next to hone in on this and see what we can do to eliminate it. Given of course it is not related to cylinder deactivation, I don't expect we can do much about that haha.
Thanks to John at Soul Performance as well as Kart125 for passing the 1st set of over axle pipes to me, I was able to receive and install the product this week! I have only been out for 1 drive since installing the pipes, but so far I am very satisfied with how they sound. Installation for the pipes was not too bad. Taking off the wheels is definitely a must, but I figured out I could unbolt the middle section of the diffuser and loosen the two bolts on the exhaust bracket. This allowed me to remove the over axle pipes without having to remove the studs in the over axle pipes (this will save you A LOT of time). Fit and finish of the product is also great; putting the pipes in is a breeze, the only struggle is getting those clunky stock ones out! I plan on taking some more videos of the car and will hopefully post them here soon! So far I can definitely recommend these over axle pipes!
John, why don't you do heat insulation of the over the axle pipes?
It's so close to the hub and the shock - better to reduce temperatures, isn't it?
It's only been asked more than a few times. Latest post here (just the previous page on this thread): https://rennlist.com/forums/718-gts-...l#post16762424
TL;DR - No GPF, no heat sink, no real requirement for heat shielding anymore.
Thanks to John at Soul Performance as well as Kart125 for passing the 1st set of over axle pipes to me, I was able to receive and install the product this week! I have only been out for 1 drive since installing the pipes, but so far I am very satisfied with how they sound. Installation for the pipes was not too bad. Taking off the wheels is definitely a must, but I figured out I could unbolt the middle section of the diffuser and loosen the two bolts on the exhaust bracket. This allowed me to remove the over axle pipes without having to remove the studs in the over axle pipes (this will save you A LOT of time). Fit and finish of the product is also great; putting the pipes in is a breeze, the only struggle is getting those clunky stock ones out! I plan on taking some more videos of the car and will hopefully post them here soon! So far I can definitely recommend these over axle pipes!
Thanks for chiming in with your feedback Nick, it is much appreciated! For your reference, if you put the car in first and get it moving a few mph you can then rev all the way up the curve. Seems to just be a restriction in the software to 5k at standstill.
Originally Posted by Croc999
John, why don't you do heat insulation of the over the axle pipes?
It's so close to the hub and the shock - better to reduce temperatures, isn't it?
Originally Posted by iliveoncaffiene
It's only been asked more than a few times. Latest post here (just the previous page on this thread): https://rennlist.com/forums/718-gts-...l#post16762424
TL;DR - No GPF, no heat sink, no real requirement for heat shielding anymore.
For your reference: Like the previous generation 987.1/987.2/981 exhaust systems (not from just us but most every exhaust manufacturer) we've found additional heat solutions to not be necessary to include for most applications, and we won't be providing it as standard on this vehicle. If our over axles pipes maintained a giant heat soak at the end in the form a particulate filter right by the rear tire, then yes a heat shield may be necessary. However, those are gone and no longer a concern
For those that simply want to go above and beyond without cost being a factor (no such thing as too much heat prevention) we will provide an optional service of having our over axle pipes sent to Jet Hot Ceramic Coating to have the inside and outside of the pipes coated in their entirety, which would provide better thermal retention characteristics vs a heat shield covering a portion of the exhaust. We are working out costing on this with Jet Hot as we speak, and expect to have that optional extra added shortly to the product page for those that want to go a little overkill.
Originally Posted by Mojonito
Does this mean the gpf delete is shipping?
Not quite, we're still looking August for that. Going back to post #112 in this thread, here is the update : )
"This week we received our test set of bend profiles for our Competition Over Axle Pipes. We used them to build the first production set, test fit them in the fixture, installed them on the car and no surprise they were a perfect fit! Now the full batch of bend profiles are confirmed for production and we expect to receive them and start fabrication of the preorders in late July/early August. Thank you to everyone who is already on the list, we are well on our way!
Now, what to do about this first set...Number 1 on the order list was Kart125, who I just called today to give him a nice surprise. Turns out he hasn't received his car yet, and guess who was kind enough to pass his set of pipes to the next guy in line? Kudos to you Louis, you're a good man and true petrolhead! Another fellow Rennlister GT4Nick was next up to bat, and they will be heading out his way tomorrow to give the rest of you some independent feedback. Here are some teaser photos of the finalized product and our video of them in action. If you'd like to get on the list, just give me a call at 4848836197 or shoot me an email at johng@soulpp.com"
Thanks for chiming in with your feedback Nick, it is much appreciated! For your reference, if you put the car in first and get it moving a few mph you can then rev all the way up the curve. Seems to just be a restriction in the software to 5k at standstill.
For your reference: Like the previous generation 987.1/987.2/981 exhaust systems (not from just us but most every exhaust manufacturer) we've found additional heat solutions to not be necessary to include for most applications, and we won't be providing it as standard on this vehicle. If our over axles pipes maintained a giant heat soak at the end in the form a particulate filter right by the rear tire, then yes a heat shield may be necessary. However, those are gone and no longer a concern
For those that simply want to go above and beyond without cost being a factor (no such thing as too much heat prevention) we will provide an optional service of having our over axle pipes sent to Jet Hot Ceramic Coating to have the inside and outside of the pipes coated in their entirety, which would provide better thermal retention characteristics vs a heat shield covering a portion of the exhaust. We are working out costing on this with Jet Hot as we speak, and expect to have that optional extra added shortly to the product page for those that want to go a little overkill.
Not quite, we're still looking August for that. Going back to post #112 in this thread, here is the update : )
"This week we received our test set of bend profiles for our Competition Over Axle Pipes. We used them to build the first production set, test fit them in the fixture, installed them on the car and no surprise they were a perfect fit! Now the full batch of bend profiles are confirmed for production and we expect to receive them and start fabrication of the preorders in late July/early August. Thank you to everyone who is already on the list, we are well on our way!
Now, what to do about this first set...Number 1 on the order list was Kart125, who I just called today to give him a nice surprise. Turns out he hasn't received his car yet, and guess who was kind enough to pass his set of pipes to the next guy in line? Kudos to you Louis, you're a good man and true petrolhead! Another fellow Rennlister GT4Nick was next up to bat, and they will be heading out his way tomorrow to give the rest of you some independent feedback. Here are some teaser photos of the finalized product and our video of them in action. If you'd like to get on the list, just give me a call at 4848836197 or shoot me an email at johng@soulpp.com"
... we expect to receive them and start fabrication of the preorders in late July/early August. Thank you to everyone who is already on the list, we are well on our way! If you'd like to get on the list, just give me a call at 4848836197 or shoot me an email at johng@soulpp.com
Best regards, John Gaydos
Originally Posted by Mojonito
how many have preordered?
to add to this... will entire first batch be consumed by pre-orders? If yes, when will second batch be available? If not, PM me please.
to add to this... will entire first batch be consumed by pre-orders? If yes, when will second batch be available? If not, PM me please.
Hey Guys, great question and let me be as transparent about this as possible so we are all on the same page.
We have more than four times the amount of bend profiles (and flanges) being manufactured than the current number on the preorder list, and as we hit our reorder point we will have more manufactured so they are always readily available for fabrication. However, the point of the preorder is not just to time our fabrication for when the raw material is readily available.
With this Covid mess going on we were down most of our manpower in fabrication for 3 months while our order numbers increased significantly. We consider this a blessing as we would much rather have it this way than the other way around. We are lucky to be in this position while others have not been so fortunate, and are thankful for that every day. However, this lack of manpower and increase in orders snowballed our lead times to approximately 4 weeks, and we have to work through a couple hundred orders on the fabrication list while we put in play new processes and manpower into cutting those lead times back down. In addition to having your order in for when the raw material is on the shelf, you are moving through the fabrication list as we are building the other orders ahead of you. We have to take care of our customers that have ordered ahead of you, whatever product that may be, as that is only fair and we extend that same courtesy to you. If you order one of our 718 GT4 products today, we would expect it to ship out around mid August. If you wait to order it until August, then you should expect to receive the order in September.
Now we do expect this to change in the near future as our new processes and additional manpower take effect. In the meantime, we very much appreciate your patience, your support and your business as we work through our own Covid challenges as a company. We are going to do our best to get you the product you need to maximize your driving experience, as quickly as possible. I also hope everyone reading this thread and their families have been managing through all this as well as can be expected.
07-10-2020, 04:40 PM
