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This will be my first post, thanks for a great forum !
I've recently purchased a exhaust system from Design911 in the UK which has the valvetronic function on. This is said to replicate the PSE which my car does not have factory installed.
Wired it up and put the vacuum hoses, tested the system and it works fine.
Over to the issue for my car:
When starting up the car, the neutral positon of the valves is open, which means a lot of noice from the exhaust.
When switching this by the solenoid, sending vacuum into the system and the valves closes. This means less sound.
But when the valves is closed the car wont run properly at the RPM range of 5500-7000 RPM's there is also fault codes for misfire on cylinder 2.
The strange thing is that this works perfectly when the valves is open. I've tried two differnet vacuum sources, into the ressonator and also for the left hand side cooling system vacuum solenoids. Without any differnce. I tried to run vacuum directly to the vacuum actuators on the exhaust without any difference and also tried manually applying vacuum and using a one way check valve to keep the vacuum while not connected to the cars vacuum line. No vacuum leaks, no fault codes when driving with the valves open.
Same result every time. So have anyone had some similar issues to their car ?
Thanks in advance for any help !
Hi Folks - a UK forum newbie here with a tech question for the collective, if I may?
I have an 07 C4S with the sports chassis option, sports chrono and and X51 factory upgrade. This means it only has a sport switch, which activates the PSE and softens the psm (no PASM due to the sports chassis pack).
The PSE is having issues though - essentially it doesn't work properly. On start up the valves are open, but as expected when the vacuum builds up they close. However they don't open when the sport button is pressed. I recently replaced the solenoid as I tested it and it had failed and for a couple of times, the new solenoid worked, but now its stopped.
As part of the replacement process, we tested the voltage at the solenoid plug with the sport button on and off. With it off, the plug registered and 12.5v with it on, it dropped to about 8v and the pse worked. After it stopped working, we checked the voltage at the plug again and this time it showed 14.5v when off and 10.5v with it on. So clearly the voltage isn't dropping to 0 as it should do and 10.5v is too much to switch the solenoid. Having been in communications with a couple of people on a UK forum, the feeling is that it's most likely a bad earth causing the volts not to drop to 0.
Has anyone on here experienced a similar issue? Could you suggest any tests that I could run in order to identify what the cause could be?
I'm thinking a straight forward earth to checck would be the engine loom earth near to cylinder 3?
Thanks in advance for your advice and assistance.
New to the forum - just joined - so I hope this is in the right place. This is all in reference to a 2013 Cayenne GTS. I've got three questions I hope someone can help clarify.
First, I've been reading a bit about the "cut off" between 25-50mph (these numbers fluctuate depending on which forum you are in) regardless of if the PSE is turned on. Is this something that is true? I'm pretty sure I can hear this cut off, but ever since I read about it, I can't tell if it's legitimate or just in my head (Baader-Meinhof Phenomenon type scenario) This post talks about how to remove that by bypassing a diode: http://www.renntech.org/forums/tutorials/article/86-remove-pse-cutout-in-2-minutes-no-tools-required/ If all is true, anyone have any resource on how to finagle this diode on the Cayenne? Where is this diode/relay? Does this mod work for the Cayenne?
Second, it looks to be about 600TU to install the PSE if you don't have it, but 150 TU to install just the button (model depending). They didn't put the selector button in until 2014, so, does anyone know if you can have it wired in to the 2013? I'd rather look like an idiot here before going to the dealer.
Third, does anyone have or know of a reputable place to get the full factory manual for the car?
Thanks in advanced!
I bought my first Porsche 2 months ago - a 2006 Porsche Boxster S with 40k miles on it. The previous owner had a custom headunit installed professionally - he had them put in a Pioneer AVH-X8500BHS and they routed an iPhone 30pin connector to the center armrest console. Obviously this connector is out of date now and I would like to replace it with a Thunderbolt cable and do some other work.
The problem I am having is that I did not receive the instruction manual for the double-din dash kit and cannot figure out how to remove the dash kit brackets to get to the back of the headunit. I don't know what brand the dashkit is but I have seen it in a few screenshots from other people on the forum so it must be fairly common. Here are some screenshots of what I am looking at:
Front Overview: http://www.renntech.org/forums/uploads/downloadedimages/q3vh9dd.jpg
Lower Right Corner: http://www.renntech.org/forums/uploads/downloadedimages/pvxwevj.jpg
Top Right Corner: http://www.renntech.org/forums/uploads/downloadedimages/4sdyb4f.jpg
Left Front: http://www.renntech.org/forums/uploads/downloadedimages/usj8hfg.jpg
Left Side: http://www.renntech.org/forums/uploads/downloadedimages/e0rtauf.jpg
Close-up of the brackets the headunit is mounted to in order to fit the original PCM-sized slot: http://www.renntech.org/forums/uploads/downloadedimages/ocryhw8.jpg
I spent about an hour and a half trying to pull and pry the unit out. Pure force was not yielding any progress, so there must be some screws or clips. I can't see any visible screws on the sides that would be holding the headunit in the bracket, and the only clips I see are the four metal clips on the front of the brackets. I've tried pulling outward and inward on them with no results.
Does anyone have any experience with these brackets? How do I remove the headunit? I just need to slide it out so that I can plug in some additional cables to the back ports of the radio.
Has anyone had any problems with the sport exhaust failing (without and indication lights)? Does tracking damage this temporarily?
Brief history for my car for perspective: bought my 2007 C4S with sport exhaust and sport/chrono package as a CPO 2 years ago. The sport exhaust didn't work when I bought it so dealer tried to fix it but didn't work still so they fixed it again. Since then, it worked the vast majority of the time except after my first two track experiences (which by the way were incredible in this car!). I noticed that by the end of each track day I could not hear the sport exhaust anymore and was uncertain whether the sport button worked at all. Each time it fixed itself despite a trip to the dealer several months ago to investigate before CPO ran out but they found nothing wrong.
Should I be worried? Is it normal to temporarily go out after tracking? It's already been fixed twice by the dealer pre-tracking...