Jump to content

The RennTech.org community is Member supported!  Please consider an ANNUAL donation to help keep this site operating.
Click here to Donate

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

hahnmgh63

Contributing Members
  • Content Count

    642
  • Joined

  • Last visited

Everything posted by hahnmgh63

  1. I've been to just below the headlights before and very slow. Definitely wouldn't recommend going any higher. My low tone horn failed soon thereafter but the high tone still works fine, that was about 2yrs ago.
  2. Congratulations on finally fixing that problem. A lot of work but you've fixed a lot of weak points which will contribute to long term reliability. I can't remember, do you have stock air filters? A more open filter can let some of the intake and/or Turbo whistling noise through.
  3. I may have been mistaken quoting the diagram number Lewis. Are you saying that Porsche has chosen to only to only sense off of one Turbo? On my Audi with ME7.1.1 both wastegate hoses go to a tee then onto the N75 and both Turbos have a sense line that tee's then goes onto the N75.
  4. Great discussions here, yes, a plugged or disconnected line should and will cause an quick overboost before the ECU shuts it down with a fault/limp mode. Keep in mind that lines (picture above) 10 and 5 (from each Turbo) go to a Tee before connecting to the N75 valve. So line 10 may be Ok but line 5 may be the problem. This is where my portable Snapon Bk6000 video scope saved me on my Audi.
  5. The N75 compares the ambient air to the compressed air from Turbine side (cold side) and adjusts boost accordingly. If you have a leak in the line going to the cold side from the N75 the sensed pressure will be lower than actual and the Turbos will try to overboost for a few seconds then the ECU will detect it, through the MAP sensor I think and will cause limp mode or just plain reduced boost. I had this happen on my Audi RS6 which also uses Motronic 7.1.1. Had just did an engine pull & replace, then had a custom tune and I started asking the guy for a tune with less boost. He gave me a custom tune or two with lower boost but said most other RS6's were using more boost than I asked for and weren't having a problem. I started thinking N75, used a spare to no avail, then used my Snapon video scope and started scoping the lines to the Turbos, they went from the N75 to a Tee then went to each Turbo, one was completely disconnected so the line was using ambient air or something in between due to one side being disconnected. Hooked up the line and all was well. While it was happening it pulled like a beast for a few seconds before limp mode kicked in.
  6. Very similar on the 955 to the 957. Scroll down and download his pdf. I installed mine under the plastic trim panel so you don't see the can but it does catch a fair amount of oil that would otherwise be coating the Intercooler, throttle body, intake manifold, and turbos.
  7. Oil isn't good but it is normal. Most of the oil comes from the PCV vent system and not from the Turbo seals. I found the delamination in my Y-pipe also a couple years ago and happened to find a new old stock IPD plenum to replace it. I don't think I would ever pay full price for the IPD product, it is better made and better flowing than the stock plastic pipe but not that much better. With that said, the stock plastic Y-pipe is pretty cheap to replace. Also, I installed two Oil catch cans in the PVC system to catch some of the oil going to the Intercoolers and intake, they do make a huge difference. Oil in the Intake air reduces Octane when mixed with the fuel, so in effect lowering performance by the ECU reducing timing and/or boost.
  8. I'm at 91K on original pumps ('06 CTTS). Probably around 100K I will do the pumps/filter as preventative.
  9. Sorry, way late as I have been gone for a couple of months but yes, that's it.
  10. First time around I just replaced mine with a cheap $25 Ebay camera and all worked fine. As good or better picture than the original. Then recently the motor for the extend/retract function finally failed. I bought another cheap $25 Cayenne/Touareg license plate camera and installed and all is well. I pulled the back center panel and the right side of the hatch panel where the wiring loom goes. I fed the wiring into the grommet onto the side so it went inside the hatch and was able to hook the camera wiring up inside the rear hatch. The Ebay cameras all come with RCA female plugs and I only found a Fakra to Femle RCA plug but got a male to male RCA adapter on Amazon, gold plated too. Camera is working fine. Originally I found through a friend that had a video business that about 25% of the small 12v camera didn't work on the OEM ~6.5v camera input but most did. Also the Ebay license plate camera comes with a LED light for that side of the license plate illumination and it didn't set off the CAN bus fault.
  11. The fill port is kind of like a periscope tube that goes up into the pan. If while running and warm the oil doesn't pour or drip constantly when you pull the plug start filling immediately. What you want to do is fill it, let it drip as it warms and the oil expands with heat, then plug the filler when it reaches plug it when it reaches 40'C. Once the oil temp passes about 35'C it starts heating fairly quick, especially with the summer temps you're probably getting in Frankfurt. An Aisin specialty company in California said it tolerates being a little over filled but not underfilled. If you cap it at a higher temp it will be underfilled.
  12. If you're talking about the little cone bushing which goes on the passenger side wiper I think I got one for $8 from the dealer. I would never replace an arm without a new bushing, they are Aluminum and Porsche considers them a one time use item as they deform a little upon tightening.
  13. Might try disconnecting the MOST connection from the back and then try to boot it up to see if there is a difference? It would rule out that something else on the MOST bus is the cause.
  14. tebee, what year of Cayenne? The Ravenol or Shell TF-0870 would probably be just fine as they are Transfer case fluids and the manufacturers (reputable) recommend them for Cayenne, Q7, Touarge (Same transfer case). The TSB I have says LT71141 which is a different Oil specification. Can you post a link to the Porsche site? I'm curious why Porsche would recommend the TF-0870 since they sell their own re-bottled fluid in a Porsche Bottle. I do recommend replacing the Transfer case and Front Diff fluids (75w-90 gear oil) regularly as the Cayenne seems to be hard on both of them. Maybe Loren knows if Porsche has a new specification out there.
  15. Yes, I have upgraded two Bose systems from Level A to Level B. Just follow the TSB and make sure the vehicle is on a battery charger. Kind of impractical to just leave it idling as it take about a half hour if I remember right.
  16. I can't answer that for sure but I'm pretty sure they're not pre-wired.
  17. For idle I think your MAF reading is fine. Your Lambda values are close (Equivalence ratio). Not sure what the first two Lambda ones are as the 102.39 makes no sense. Lamda or 1 = 14.7 to 1 A/F ratio, optimum burn. Optimum power is a little richer around 12.8 to 13.2 to 1 which is where a Cayenne on Wide Open throttle will run, we'll call it about Lambda .87 to .90. It would be interesting to see those two Equivalence ratio's on WOT when you're making power. See if your program has instructions to see what the meanings of the Actual Lambda values in the first pics are as they should be close to the same on both banks. The Equivalence ratio reading say S1 which means coming from the first (Wide Band on Turbos) O2 sensor which is what you want, pre-cat.
  18. John, not sure what year you have but send me a PM with your E-mail address and I might be able to help you out. Mark
  19. Also: A dead/weak battery A faulty starter motor A starting system circuit Camshaft position sensor circuit poor electrical connection A faulty camshaft position sensor A camshaft position sensor harness that is shorted or open A camshaft position sensor circuit that has a poor electrical connection
  20. On my '06 CTTS the plug in the Boot isn't switched (always Hot) and the one I use for my Trickle charger.
  21. Congrats. When I did my Coolant pipes and 'T's I replaced all of the small vacuum lines I could fine with Silicone vacuum lines which hold up better against aging and heat.
  22. That is exactly how the '06 camera is, same part number. I just removed the pieces you show there and cleaned them, re-greased them and put them back together. You have to adjust the screws so the cover opens and closes flush with the trim piece. Is there actually a broken piece in there or can it be cleaned and re-greased?
  23. As I said, use a hard plastic spatula if you don't have a set of trim removal tools (basically plastic spatula's in different shapes and at different angles) so you don't scratch anything. Start at one side and slowly work your way across until the whole panel pops off. Here's a pic of the camera and trim piece. Not mine but found it on a Google search. Trim piece just pops back in.
  24. If it's like the '06 CTTS then you have to remove the rear trim panel, use plastic spatula's so as not to scratch, the fasteners just pop out. Then if your mechanically inclined you can take apart the small little jackscrews and clean and lubricate them. Worked on mine, been going on 3yrs+ since I took mine apart and cleaned and re-lubricated. Use a good quality grease like a synthetic as they tend to hold up better against moisture/water.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.