Not sure if anyone in here has herd of this or not, but i know that with the BMW 335 there is a valve that controls the dual exhaust flow and if you disconnect the connector that feeds information to the valve you can leave the valve open full time. This causes the car to have a really nice sound at low rpm with lots of suttle back firing when easing of the throttle.

Has anyone herd of this for a c4s?

 

search for porsche sport exhaust

 

Does anyone have a link that show how to do it, and or where the connector maybe?

 

I believe this mod is only avaibale with PSE

 

If your car did not come with PSE (Porsche Sport Exhaust) from the factory you can get the same sound from the FisterD modification. They basically weld in a bypass like the PSE uses but without the valve control so it is "on" all the time. Sounds very nice! Highly recommended.

 

How do I know if my car came with PSE or not? Is there a button or an easy way to tell? Its a 2002 C4S

 

yes, there should be a button

 

Fabspeed also make an exhaust with a valve control.

 

Not trying to confuse everyone , but I have PSE same car with NO button..I did verify it is PSE, and sounds WAY different and much louder than what i've heard...so IDK weird. BUt sound is great!

 

150shot. Did you just disconnect the connector and that's it?

 

You may have a car that was originally not equipped with PSE, and therefore no button can be found. A previous owner may have swapped out the standard mufflers for PSE mufflers. All cars that came from the factory with PSE will have the button on the dash.

 

Truth be told or at least as I understand it (and I have an 02 C4S) some factory installs of PSE did not have a button.... Mine does not have the button but the build sheet calls out PSE.

I did post some pictures and how to disconnect the valve so that the PSE is on or open ALL the time. Typically the purpose of the valving was to observe some sound ordinance in Europe (?).

I disconnected mine and after 6 months would never consider plugging it back in... Sounds great... All the time!

 

I "believe", the other way to tell that you have PSE on a 996 C4S is the figure 8 dual exhaust tips.

 

Trust me on this.... If you have PSE.... you WILL know it!

Http://youtu.be/CBZRHnmUxyM

And.....

Http://youtu.be/LPr1Bap8tio

The last vid was before I switched to full time PSE

 

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