Quote:
Originally Posted by scalbert
Actually, I now suspect it was a loose CPK signal, just FYI. I should have initially checked the code when the fault occurred. Had I been in town, that is precisely what would have happened. But the circumstances were different and I acted promptly. Now after digesting and scanning for codes, the problem appears to be a loose CPK signal.
This will be tested thoroughly over the weekend though by leaving the car outside in similar ambient temperatures. BTW, thanks for proclaiming this publically before I had a chance to fully evaluate the situation. 
Secondly, you failed to mention the 20 PSI spike circumstances. This was only after I bumped up the setting and only occurred once and prior to full adaptation. After I drove the car more with the new settings, the spikes diminished.
Those who have driven tuned turbo vehicles know this is the nature of the beast. The spikes, while still occurring, are minimal. A 15 PSI spike then dropping to 13 PSI is certainly fine and better than the previous map I tested. This was on the default settings and under even more specific situations; i.e. narrower RPM band.
In the end, this is still better than what most upgraded B5 S4 drivers would see with most code, or even other factory turbo vehicles with upgardes. Heck, I had to run an MBC in parallel just to control spikes to 23+ PSI when it would drop to 18 - 19 PSI. Otherwise, you would get the dreaded throttle cut. |
scalbert,
Thank you for chiming in.
I think we all know now that you're one of the other v2.0.2 beta testers seeing these boost spike issues. So, in your opinion, would you say that the latest v2.0.2 beta map you received from Shiv (v2.0.2 beta 11-26-07) with your "bumped up" TQ Curve settings is safe and effective without any major boost spikes or other problems?
