SOUL | 718 GT4/Spyder Exhaust Development
#1186
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-Mike
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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
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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
![](https://rennlist.com/forums/signaturepics/sigpic191275_4.gif)
#1187
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Yes but do i need more than 1 button to open and close my garage door ? Thank you.
#1188
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Soul Performance (08-19-2021)
#1190
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Your car has 3 Homelink buttons. Use 2 for the valve controller, and 1 for the garage.
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Goodwood (08-19-2021)
#1192
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Here's an awesome install / sound result video produced by our dealer @Flat6Motorsports featuring our Valved Exhaust System!
-Mike
-Mike
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Flat6Motorsports (08-26-2021),
UncleDude (08-25-2021)
#1193
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Thanks Mike. Do you know if anybody is running the valved exhaust, stock over axel pipes, and your street headers? I've got the valved exhaust and your over axle pipes and I'm struggling with some of the drone that combination can create. Was wondering if I added street headers and reinstalled my OEM over axle pipes what I might get for sound improvement. I suspect the OEM over axles will negate some of the power gains the street headers would offer - just wondering if anyone else has tested the combination of your valved exhaust and street headers paired with OEM over axle pipes.
#1194
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Thanks Mike. Do you know if anybody is running the valved exhaust, stock over axel pipes, and your street headers? I've got the valved exhaust and your over axle pipes and I'm struggling with some of the drone that combination can create. Was wondering if I added street headers and reinstalled my OEM over axle pipes what I might get for sound improvement. I suspect the OEM over axles will negate some of the power gains the street headers would offer - just wondering if anyone else has tested the combination of your valved exhaust and street headers paired with OEM over axle pipes.
-Mike
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I accomplished the objective in 5 minutes last night:
https://rennlist.com/forums/718-gts-...l#post17628843
https://rennlist.com/forums/718-gts-...l#post17628843
#1198
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Our customer, Johnny, opted to dyno test his 718 GT4 along the way of his mod path – starting with a SOUL Race Exhaust System. Baseline runs and post exhaust results were generated by HPA Performance with their state of the art Superflow dyno.
![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-1-1024x683.jpg?x17388)
Superflow’s Autodyn 30 is known for unmatched repeatability with dyno runs. “SuperFlow® does not use complicated belt systems that stretch and break or inconsistent electronically synced systems that allow the front and rear rollers to spin at different speeds, causing driveline windup and damaging driveline components. Differentials and driveshafts allow SuperFlow® to measure and compensate for the parasitic losses of every dyno produced so that each one leaves the factory calibrated with its own inertia and parasitic data. The end result is the most accurate torque and power measurement available. Further, torque is measured using two temperature-compensated load cells, one at each roll set, so you can see total torque across the rpm range, but also the torque split between the front and rear axles.”
![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-2-1024x683.jpg?x17388)
Airflow is provided by a Nascar wind machine that simulates true driving conditions. A fan exhausting above the engine at 42,000cfm can pull 98,000 BTUs of heat.
![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-6-1024x683.jpg?x17388)
This car has no other modifications, stock ECU tune, and is running 91 octane gas (Canadian).
![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-4-1024x768.jpg?x17388)
-Mike
![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-1-1024x683.jpg?x17388)
Superflow’s Autodyn 30 is known for unmatched repeatability with dyno runs. “SuperFlow® does not use complicated belt systems that stretch and break or inconsistent electronically synced systems that allow the front and rear rollers to spin at different speeds, causing driveline windup and damaging driveline components. Differentials and driveshafts allow SuperFlow® to measure and compensate for the parasitic losses of every dyno produced so that each one leaves the factory calibrated with its own inertia and parasitic data. The end result is the most accurate torque and power measurement available. Further, torque is measured using two temperature-compensated load cells, one at each roll set, so you can see total torque across the rpm range, but also the torque split between the front and rear axles.”
![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-2-1024x683.jpg?x17388)
Airflow is provided by a Nascar wind machine that simulates true driving conditions. A fan exhausting above the engine at 42,000cfm can pull 98,000 BTUs of heat.
![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-6-1024x683.jpg?x17388)
This car has no other modifications, stock ECU tune, and is running 91 octane gas (Canadian).
Base peak numbers: 373 whp / 293 ft-lbs.
Final peak numbers: 391 whp / 302 ft-lbs.
Peak gains: 18 whp / 9 ft-lbs
Our larger diameter, single flow path piping makes for great gains in the higher RPM’s to boost on-track performance! We’d expect to see greater gains with 93 octane gas and an more aggressive curve with an ECU tune.![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-4-1024x768.jpg?x17388)
-Mike
The following users liked this post:
sobiloff (09-03-2021)
#1199
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Our customer, Johnny, opted to dyno test his 718 GT4 along the way of his mod path – starting with a SOUL Race Exhaust System. Baseline runs and post exhaust results were generated by HPA Performance with their state of the art Superflow dyno.
![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-1-1024x683.jpg?x17388)
Superflow’s Autodyn 30 is known for unmatched repeatability with dyno runs. “SuperFlow® does not use complicated belt systems that stretch and break or inconsistent electronically synced systems that allow the front and rear rollers to spin at different speeds, causing driveline windup and damaging driveline components. Differentials and driveshafts allow SuperFlow® to measure and compensate for the parasitic losses of every dyno produced so that each one leaves the factory calibrated with its own inertia and parasitic data. The end result is the most accurate torque and power measurement available. Further, torque is measured using two temperature-compensated load cells, one at each roll set, so you can see total torque across the rpm range, but also the torque split between the front and rear axles.”
![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-2-1024x683.jpg?x17388)
Airflow is provided by a Nascar wind machine that simulates true driving conditions. A fan exhausting above the engine at 42,000cfm can pull 98,000 BTUs of heat.
![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-6-1024x683.jpg?x17388)
This car has no other modifications, stock ECU tune, and is running 91 octane gas (Canadian).
![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-4-1024x768.jpg?x17388)
-Mike
![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-1-1024x683.jpg?x17388)
Superflow’s Autodyn 30 is known for unmatched repeatability with dyno runs. “SuperFlow® does not use complicated belt systems that stretch and break or inconsistent electronically synced systems that allow the front and rear rollers to spin at different speeds, causing driveline windup and damaging driveline components. Differentials and driveshafts allow SuperFlow® to measure and compensate for the parasitic losses of every dyno produced so that each one leaves the factory calibrated with its own inertia and parasitic data. The end result is the most accurate torque and power measurement available. Further, torque is measured using two temperature-compensated load cells, one at each roll set, so you can see total torque across the rpm range, but also the torque split between the front and rear axles.”
![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-2-1024x683.jpg?x17388)
Airflow is provided by a Nascar wind machine that simulates true driving conditions. A fan exhausting above the engine at 42,000cfm can pull 98,000 BTUs of heat.
![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-6-1024x683.jpg?x17388)
This car has no other modifications, stock ECU tune, and is running 91 octane gas (Canadian).
Base peak numbers: 373 whp / 293 ft-lbs.
Final peak numbers: 391 whp / 302 ft-lbs.
Peak gains: 18 whp / 9 ft-lbs
Our larger diameter, single flow path piping makes for great gains in the higher RPM’s to boost on-track performance! We’d expect to see greater gains with 93 octane gas and an more aggressive curve with an ECU tune.![](https://i4q6a2d6.stackpathcdn.com/wp-content/uploads/2021/09/Soul-Performance-Products-718-GT4-Dyno-4-1024x768.jpg?x17388)
-Mike