SOUL | 718 GT4/Spyder Exhaust Development
04-08-2021, 09:44 AM
#826
04-08-2021, 10:09 AM
#827
John, thanks for sharing the coating costs! Do you know how much of a reduction in temperature the $200 Jet Hot 1300-degree coating provides over a non-coated OAP? Also, same question for the $550 2500-degree coating? I know it's probably overkill once you've removed the particulate filters, but I'd feel better taking the more conservative approach of getting the parts treated with the Jet Hot option.
I have the 1300 polish on my whole system...according to Jet Hot up to 50%. They coat inside and outside.
Now the temp rating for the coating is how much that coating will withstand heat not it's actual ability to contain heat.
IMO As you move farther from the headers more than the 1300 is overkill.
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slilley (04-09-2021)
04-08-2021, 10:32 AM
#828
Rennlist Member
Yes, I'm using the Valve Controller. I agree, stock there was a slight drone, but it was very slight (to me). Now it is exacerbated quite a bit, and the drone when closed at 2500 is deafening. It's a weird setup compared to when I just ran competition headers on the 981, that one was relatively tame at lower RPM's but much much louder at WOT and high RPM's. Instead, now it's just loud and drone-y at lower RPM's and then fairly quiet at high RPM's.
04-08-2021, 04:08 PM
#829
Instructor
Yes, I'm using the Valve Controller. I agree, stock there was a slight drone, but it was very slight (to me). Now it is exacerbated quite a bit, and the drone when closed at 2500 is deafening. It's a weird setup compared to when I just ran competition headers on the 981, that one was relatively tame at lower RPM's but much much louder at WOT and high RPM's. Instead, now it's just loud and drone-y at lower RPM's and then fairly quiet at high RPM's.
04-08-2021, 04:44 PM
#830
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Yes, I'm using the Valve Controller. I agree, stock there was a slight drone, but it was very slight (to me). Now it is exacerbated quite a bit, and the drone when closed at 2500 is deafening. It's a weird setup compared to when I just ran competition headers on the 981, that one was relatively tame at lower RPM's but much much louder at WOT and high RPM's. Instead, now it's just loud and drone-y at lower RPM's and then fairly quiet at high RPM's.
Regards,
John Gaydos
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SOUL PERFORMANCE PRODUCTS
Quality Exhaust Solutions, Fair Pricing, and Outstanding Service
John Gaydos- Owner, Performance Specialist
Cell - (484) 883-6197
johng@soulpp.com
Jon Wheel - Marketing Manager
jwheel@soulpp.com
SOUL PERFORMANCE PRODUCTS
Quality Exhaust Solutions, Fair Pricing, and Outstanding Service
John Gaydos- Owner, Performance Specialist
Cell - (484) 883-6197
johng@soulpp.com
Jon Wheel - Marketing Manager
jwheel@soulpp.com
04-08-2021, 04:56 PM
#831
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Best regards,
John Gaydos
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04-08-2021, 10:25 PM
#832
Rennlist Member
The high pitched and GT3 like sound out of this car requires blending the exhaust flow with an X-Pipe. To get the same level of quietness with the valves closed at the stock car requires an incredibly large and restrictive muffler. And then you have to have that giant muffler and that x-pipe fit in the same space on top of the rear diffuser. If it didn't have the areo...it would be more plausible just like the 981 generation. You win some, and you lose some. Realistically speaking the closest you're going to get to that kind of experience is to combine our high flow catted headers with our competition over axle pipes, bolted up to the factory PSE muffler. Maximum sound/aggressiveness with valves open internally bypassing the muffler but with the quality of the tone kept in check by the high flow cats. Then with valves closed it still goes through the giant PSE muffler and kills the sound.
Best regards,
John Gaydos
Best regards,
John Gaydos
Last edited by Rennolazine; 04-08-2021 at 11:13 PM.
04-09-2021, 11:34 AM
#833
Of course, it's been covered in this thread a multitude of times haha, but in short...once the particulate filters are removed and that huge heat soak cooking the over axle pipes is gone the heat shielding is not necessary. We're not going to mandate people spend more money where they don't have to, regardless of varying opinions. When I can light a few hundred dollars on fire I'll let you know, but that's certainly not today and I'd imagine that's the same for most people haha. That said, there is no such thing as too much of a heat solution and we realize people can be more comfortable spending more to have it. We are more than happy to send our over axle pipes out to Jet Hot ceramic coating to have every millimeter of those pipes coated in either their 1300 degree or 2500 degree ceramic coating. For both our OAPs, their 1300 degree coating in Classic Polish costs $200, to do that same 1300degree coating in a different color brings it to $435, if you want their Ultra Extreme 2500 degree coating in any of their color options it costs $550.
Best regards,
John Gaydos
Best regards,
John Gaydos
04-09-2021, 01:35 PM
#834
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John i think ive isolated one of the major reasons why this car drones. I believe its the valved air intake which is what operates with the pse button. Also, there seems to be a bladder next to the intake where the sound symposer comes off that probably rings like a bell. Is there a way to permanently remove the bladder or modify the intake so that it reduces the resonance? Alot of the drone ive been hearing seems to originate behind the passenger seat, which is where this system lives. It doesnt seem like exhaust drone. PS Ive tried multiple different air filters with multiple different exhaust setups, and whenever there is amplified resonance (including stock with valves disconnected) bmc filters make it way worse (like double at least) and it has a very different resonance to exhaust boom
04-10-2021, 11:13 PM
#836
Rennlist Member
This should not be expected nor surprising, drone is subjective as is sound. I'd be happy for you to chat with owners running this system that are superbly happy with no drone complaints at all. Matt at Obsessed garage is one of them, and I he is one of the most sensitive to drone I've ever met haha. At the end of the day, we can't expect everyone to have the same experience because that's a variable we can't control...the person itself. But that's okay, we're here to help and help tailor setups even after the initial purchase, that's how we roll. Keep in mind that our valved exhaust system was tailored towards to running valves open all the time for maximum
Regards,
John Gaydos
Regards,
John Gaydos
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Soul Performance (04-12-2021)
04-11-2021, 12:36 AM
#837
Intermediate
04-11-2021, 11:01 AM
#838
Rennlist Member
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Soul Performance (04-16-2021)
04-11-2021, 11:06 AM
#839
Intermediate
04-11-2021, 03:18 PM
#840
Instructor
This should not be expected nor surprising, drone is subjective as is sound. I'd be happy for you to chat with owners running this system that are superbly happy with no drone complaints at all. Matt at Obsessed garage is one of them, and I he is one of the most sensitive to drone I've ever met haha. At the end of the day, we can't expect everyone to have the same experience because that's a variable we can't control...the person itself. But that's okay, we're here to help and help tailor setups even after the initial purchase, that's how we roll. Keep in mind that our valved exhaust system was tailored towards to running valves open all the time for maximum driving experience and that is where the drone attenuation is targeted. Being able close the valves and force the exhaust through the muffler is not for drone reduction, it's an option we added to simply fly under the radar when you want to for exterior sound level reduction.
Mr. Flashburn, please text/call me at your convenience at 4848836197. Let's chat a bit more in depth about your experience so far and perhaps hone is on a setup more for your particular goals if this doesn't meet them
Regards,
John Gaydos
Mr. Flashburn, please text/call me at your convenience at 4848836197. Let's chat a bit more in depth about your experience so far and perhaps hone is on a setup more for your particular goals if this doesn't meet them
Regards,
John Gaydos
If I interpret what you wrote correctly the Soul valved exhaust really must be used with a valve controller to force the valves open all the time. Otherwise, with the stock valve operation it will always drone at low RPM with the PSE either on or off. Correct?