Why not keep the exhaust valve open
#32
Born2Run, many thanks for these really helpful pictures. I did mine today
#33
For those that need to keep things "quiet" Mikymu has a nice write up on how/what
http://sharkwerks.com/porsche/techni...ification.html
http://sharkwerks.com/porsche/techni...ification.html
#34
Instructor
Sorry to revive an old thread, but I was looking at the plug and trying to get it apart without breaking it. Exactly how does it come apart. Do you have to squeeze it with pliers, or will fingers do it? Front to back, or on the sides? Do you need to pry on the steel spring? Thanks!
#35
Rennlist Member
Sorry to revive an old thread, but I was looking at the plug and trying to get it apart without breaking it. Exactly how does it come apart. Do you have to squeeze it with pliers, or will fingers do it? Front to back, or on the sides? Do you need to pry on the steel spring? Thanks!
#40
Sorry to revive an old thread. I am looking for info on these bypass valves as they are installed by the factory ... not after market. Can someone direct me to more info on which cars have bypass valves installed? Are they only ones with the PSE option or are they also on non-PSE cars (I believe the PSE option includes a button to open/close the valves, is that correct?/
Would appreciate learning more info.
Thanks,
Steve
Would appreciate learning more info.
Thanks,
Steve
#41
Rennlist Member
Great thread. I might need to go unplug my car ...
However I swear I read in another thread someone mentioning that the valves close at low revs no matter what to improve the torque curve; much like the valve in the variable intake manifold. Any input about that?
Did anyone dyno before/after? Would be curious to see the results.
However I swear I read in another thread someone mentioning that the valves close at low revs no matter what to improve the torque curve; much like the valve in the variable intake manifold. Any input about that?
Did anyone dyno before/after? Would be curious to see the results.
#42
Rennlist Member
If you unplug the valve (simple 30 second job), the valves remain open all the time. The sport button will no longer control the valves. If you want valve control independent of the sport button with the ability to run full open or full closed at the touch of a button at any time, get the carnewal exhaust valve remote control setup. Easy plug and play
#43
Burning Brakes
If you unplug the valve (simple 30 second job), the valves remain open all the time. The sport button will no longer control the valves. If you want valve control independent of the sport button with the ability to run full open or full closed at the touch of a button at any time, get the carnewal exhaust valve remote control setup. Easy plug and play
Use my carnewal swith (and Sharkwere bypass) Everytime I'm in the car.
#44
Racer
The original poster may have a broken valve. I have the sharkwerks bypass on my car and when one of the valves failed the car sounded like crap, with or without the valves actuated with the sport button.
Unplugging the electrical connection made no difference either.
You can pull the valves off and test them with a venturi vacuum. I replaced the frozen valve and have had no problems since.
The vacuum actuator (exhaust flap) part number is : 997 111 901 90 and available at worldimpex.com
Unplugging the electrical connection made no difference either.
You can pull the valves off and test them with a venturi vacuum. I replaced the frozen valve and have had no problems since.
The vacuum actuator (exhaust flap) part number is : 997 111 901 90 and available at worldimpex.com
Last edited by andrewgt3; 09-26-2014 at 10:15 AM. Reason: added image.
The following users liked this post:
cbracerx (06-01-2021)
#45
I recently had the valves fixed and the car sounded great. Now I find it doesn't sound as good and I'm starting to wonder if one of the valves has gone bad again. Is there any way to test without removing them from the car?
I was also advised by Porsche Canada that they attributed the RMS leak to a bypass exhaust previously installed on the car. After some fighting with them I was able to get it fixed. They argued that the aftermarket system prevented sufficient back-pressure so the seal was loose or some BS...
Now running stock exhaust and RMS is back after only 3000km so joke's on them. Now back to fighting with them to get it fixed.
I was also advised by Porsche Canada that they attributed the RMS leak to a bypass exhaust previously installed on the car. After some fighting with them I was able to get it fixed. They argued that the aftermarket system prevented sufficient back-pressure so the seal was loose or some BS...
Now running stock exhaust and RMS is back after only 3000km so joke's on them. Now back to fighting with them to get it fixed.