Porsche 991 Carrera Product Development by Agency Power
Registered User
Joined: Aug 2010
Posts: 131
From: Bangkok
Rep Power: 28
Thanks for dyno result in detail. This is a great system that really gain HP and torque.
Can you show us one more test with the combination of Header with 200 cell + X pipe. Leave the 2nd muffer as standard so the it would not be too lound for DD. Thank you.
Can you show us one more test with the combination of Header with 200 cell + X pipe. Leave the 2nd muffer as standard so the it would not be too lound for DD. Thank you.
Last edited by exponential; Jul 19, 2012 at 08:01 PM.
Registered User
Joined: Jul 2012
Posts: 101
From: SoCal
Rep Power: 21
That is pretty impressive. I especially like how the curve smoothes out nicely.
So how do we improve the very top end? Have you done any testing with higher octane fuel? I'm curious if the ECU is pulling timing at the top end, or perhaps an intake restriction?
On a side note it is interesting to see how much the motor moves on the engine mounts under load on the dyno with the bumpers off. I'd like to see a similar video of a car with the dynamic engine mounts.
So how do we improve the very top end? Have you done any testing with higher octane fuel? I'm curious if the ECU is pulling timing at the top end, or perhaps an intake restriction?
On a side note it is interesting to see how much the motor moves on the engine mounts under load on the dyno with the bumpers off. I'd like to see a similar video of a car with the dynamic engine mounts.
Last edited by Attilas; Jul 19, 2012 at 10:20 PM.
Thanks! 
From past cars, the narrowbody and widebody Carrera exhausts are exactly the same. So I would assume this to be true for the 991. The car is back to stock right now for the owner to pickup. We will schedule time for him to come back and we can test our cold air intake and do some full sound clips driving.
Pricing for this XPipe is on our www.vividracing.com
From past cars, the narrowbody and widebody Carrera exhausts are exactly the same. So I would assume this to be true for the 991. The car is back to stock right now for the owner to pickup. We will schedule time for him to come back and we can test our cold air intake and do some full sound clips driving.
Pricing for this XPipe is on our www.vividracing.com
Its 100+F here and we use 91oct. So could be at the top it just stops.
I compiled all 3 sounds into 1 here -
I compiled all 3 sounds into 1 here -
That is pretty impressive. I especially like how the curve smoothes out nicely.
So how do we improve the very top end? Have you done any testing with higher octane fuel? I'm curious if the ECU is pulling timing at the top end, or perhaps an intake restriction?
On a side note it is interesting to see how much the motor moves on the engine mounts under load on the dyno with the bumpers off. I'd like to see a similar video of a car with the dynamic engine mounts.
So how do we improve the very top end? Have you done any testing with higher octane fuel? I'm curious if the ECU is pulling timing at the top end, or perhaps an intake restriction?
On a side note it is interesting to see how much the motor moves on the engine mounts under load on the dyno with the bumpers off. I'd like to see a similar video of a car with the dynamic engine mounts.
Registered User
Joined: Apr 2012
Posts: 27
From: SF Bay Area
Rep Power: 16
Do you have plans to make a version for the base carrera which does not have the extra pipe for the floating tip? Any chance on a dyno from a base carrera?
Im very excited about this exhaust option!
Im very excited about this exhaust option!
Amazing 
! I am getting the bypass and headers installed this week and would be extremely curious to see what gain the X-pipe could bring compared to my PSE that will remain in place for now...
! I am getting the bypass and headers installed this week and would be extremely curious to see what gain the X-pipe could bring compared to my PSE that will remain in place for now...
kcarrigan - The fitment is the same. The S has the bypass valve which puts the 3rd pipe floating behind the tip. So it looks to be identical.
We do not supply new header gaskets. Ideally you can reuse them once. They are only about $25 for the pair to the engine block.
SM_atl - please post up pics once done!
We do not supply new header gaskets. Ideally you can reuse them once. They are only about $25 for the pair to the engine block.
SM_atl - please post up pics once done!
Registered User
Joined: May 2012
Posts: 18
From: portland or.
Rep Power: 0
VividThank you for your detailed reporting on exhaust development. My CS is to arrive shortly. It will have PSE and I am weighing the option of using your product. Anxious to hear our member SM impressions..
Registered User
Joined: Apr 2012
Posts: 137
From: Los Angeles
Rep Power: 23
I couldn't find the gaskets on the agency site, do you guys sell the them or do we have to get them from Porsche? I would prefer to use new gaskets rather than re-use the old ones. Would like to purchase a full gasket kit.
Registered User
Joined: Apr 2012
Posts: 27
From: SF Bay Area
Rep Power: 16
kcarrigan - The fitment is the same. The S has the bypass valve which puts the 3rd pipe floating behind the tip. So it looks to be identical.
We do not supply new header gaskets. Ideally you can reuse them once. They are only about $25 for the pair to the engine block.
SM_atl - please post up pics once done!
We do not supply new header gaskets. Ideally you can reuse them once. They are only about $25 for the pair to the engine block.
SM_atl - please post up pics once done!