| Cayman and Boxster Electronics Discussion of CD players, PCM, Sat Radio, iPOD and other electronic items. |
 |
06-06-2009, 08:47 PM
|
 |
Porsche Idealist
500 post club
|
|
Join Date: Aug 2005
Location: MD
Posts: 771
Country: 
|
|
|
RacePak Data Logger Installation
I purchased a RacePak G2X data logger last week and decided to tap into the DME wiring for RPM and TPS. So, today I started the wire tapping portion of the installation with the help of a friend and the articles from Consolidated and K-Mans.
Doing electrical work the first time, I had to be careful and kept planning two-three steps ahead, one step back type thing, took me a good 2 hours.
Taped in E6-RPM (green/blue, looks either 18 or 22AWG) and D13-TPS (violet, was thicker than E6). Verified that I did the connection properly using a multimeter and registered resistens (ohms). I could not figure out which wire would be the brake light, so I left that for another time.
Then started the car and I got bunch of errors and several things were not working:
- PSM failure
- Sport Mode failure
- PASM failure, car stuck in hard settings of shocks
- One-touch up/down windows weren't working
- Throttle only works at ~50% of load, could not go over 3500 RPM, like limp mode, pushing the pedal all the way down did not do anything
Couple of restarts and PSM failure cleared, then drove around for about 20 mins, turn off the car for 15 mins, restart and windows started working, turn off for 15 mins and restart, Sport Mode and PASM failure cleared, but I noticed that I could not do heel/toe; if I press the brake pedal, throttle does not work.
So, I left it like that at this time, with heel/toe not working and I am not sure if I can go over 50% throttle, I'll test that tomorrow.
 |
 |
 |
 |
|
PASM - Porsche Active Suspension Management
|
 |
This active damping system offers continuous adjustment of individual damping forces based on current road conditions and driving style.
The driver can choose from two setup modes, ‘Normal’ and ‘Sport’, using a separate ‘damper’ button on the center console. ‘Normal’ mode is designed for general road driving and circuits with uneven tarmac. ‘Sport’ mode is intended for smoother track surfaces, where the harder settings help eliminate pitch and roll.
In either mode, PASM continuously evaluates the current conditions while automatically selecting the corresponding damper rates from the respective set of mapped values.
A range of sensors are used to monitor the movement of the body under acceleration, braking and cornering maneuvers, as well as on poor road surfaces. The PASM control unit then evaluates this data and modifies the damping force on each individual wheel in accordance with the selected mode. The result is a significant reduction in body movement as well as a better grip on the road.
For example: if ‘Sport’ mode is selected, the suspension is automatically set to a harder damper rating. If the quality of the track surface falls below a certain threshold, the system immediately changes to a softer rating within the ‘Sport’ setup range. When the quality of the tarmac improves once more, PASM automatically returns to the original, harder rating.
Need more information about PASM? Click this link: FAQ for PASM |
|
 |
 |
 |
 |
|
|
|
|
|
PSM - Porsche Stability Management
|
 |
While it can’t overcome the laws of physics, the revolutionary Porsche Stability Management (PSM) system does lend an added degree of balance and control to the Cayman’s mid-engine driving dynamics, inspiring surefooted confidence in corners and extreme situations.
A standard feature on the Cayman and Cayman S, PSM continuously monitors steering input, road speed, yaw velocity and lateral acceleration to calculate the actual direction of travel. If the car begins to steer off line, PSM instantly intervenes with precision brake inputs on individual wheels to help bring the car back onto the driver’s intended path.
If braking alone isn’t enough to correct the vehicle’s cornering line, PSM then calls on the Cayman’s engine management system, adjusting engine output as needed to help stabilize handling. PSM can also compensate in an instant for mid-corner changes in load resulting from deceleration or braking. When Sport mode is selected with the optional Sport Chrono Package, PSM’s threshold for intervention is raised, allowing for greater driver involvement. If you prefer driving without automatic PSM assistance, the system can be set to standby at any time. In this case, it will only intervene under heavy braking, where both front wheels exceed the ABS threshold.
For all of its technical ability, PSM goes virtually unnoticed in everyday driving situations, preserving the Cayman’s natural agility. |
|
|
|
|
|
__________________
FT
VitalMethods
|
06-07-2009, 09:12 AM
|
 |
Porsche Enthusiast
|
|
Join Date: Mar 2006
Posts: 243
Country:
|
|
|
Re: RacePak Data Logger Installation
I had no problem tapping the RPM signal on my traqmate install. My guess is that the TPS signal is getting you in trouble. Sounds like the logger may be loading down that signal and causing problems.
Dave
|
06-07-2009, 10:52 AM
|
|
Porsche Idealist
500 post club
|
|
Join Date: Aug 2005
Location: MD
Posts: 771
Country:
|
|
|
Re: RacePak Data Logger Installation
yes, you are right, I am pretty sure that my tap to the TPS signal is the issue, but I have not connected the logger yet, just its Universal Sensor Module, which should be inactive. A little more investigation is in order I think.
Thanks Dave.
__________________
FT
VitalMethods
|
06-07-2009, 12:56 PM
|
|
Porsche Enthusiast
|
|
Join Date: Mar 2006
Posts: 243
Country:
|
|
|
Re: RacePak Data Logger Installation
Just a theory, but the added wire could act as an antenna to pick up noise and bring it into the TPS input. Also, there may be some circuitry inside the sensor module that could upset things even without the logger attached.
Hope it's an easy fix,
Dave
|
06-07-2009, 05:30 PM
|
|
Porsche Idealist
500 post club
|
|
Join Date: Aug 2005
Location: MD
Posts: 771
Country:
|
|
|
Re: RacePak Data Logger Installation
that's an interesting thought, hmmm... I will let you either way, hopefully tomorrow.
Thanks again Dave.
__________________
FT
VitalMethods
|
06-08-2009, 10:07 AM
|
|
Porsche Idealist
500 post club
|
|
Join Date: Aug 2005
Location: MD
Posts: 771
Country:
|
|
|
Re: RacePak Data Logger Installation
Well, good news, problem solved 
After thinking about the issue and how it manifests itself and looking at the schematics of the RacePak's USM, the issue was one of simple grounding. I connected the USM to the G2X logger and attached the power source (turned off), and voila! issue gone. Such a relief!!!
__________________
FT
VitalMethods
|
06-08-2009, 04:13 PM
|
 |
Site Donor
|
|
Join Date: Jun 2007
Location: Md
Posts: 330
Country:
|
|
|
Re: RacePak Data Logger Installation
Originally Posted by FT
Well, good news, problem solved
After thinking about the issue and how it manifests itself and looking at the schematics of the RacePak's USM, the issue was one of simple grounding. I connected the USM to the G2X logger and attached the power source (turned off), and voila! issue gone. Such a relief!!! |
FT - how about some pics?
__________________
'07 Cayman S (The Black Pearl)
Performance mods: clear side markers
|
06-08-2009, 08:30 PM
|
|
Porsche Idealist
500 post club
|
|
Join Date: Aug 2005
Location: MD
Posts: 771
Country:
|
|
|
Re: RacePak Data Logger Installation
I'll take and post them tomorrow of the unit. I forgot to take pics during the installation, but Consolidated's article has good pics already, here.
After all worked on the car, it was time to configure the logger and the dash unit. Before doing so, I thought I should call RacePak to make sure I have everything connected the way that the logger is expecting. The engineer on the phone confirmed I had it all correct, then offered to connected to my laptop remotely, which was connected to the logger for configuration. He remotely showed me how to do it for future reference, and he did the entire configuration in 30 mins; done!!! Everything is looking great right now, just as I wanted; the support was just awesome.
__________________
FT
VitalMethods
|
|
| Thread Tools |
|
|
| Display Modes |
 Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
|
|
