No real progress has been made, however communication has at least been consistent. GIAC suggested I take the TT to one of their dealers, so they can replicate and log the problem. Since they have not seen this problem on my specific car. Of course I won't do that, and told them my rational behind it. GIAC mentioned that a bad N75 and coolant temp sensors have been the cause on other vehicles. I told them how i replaced the coolant temp sensor, and now run a MBC. They asked a few questions about my MBC setup. I responded and am waiting to hear back. This certainly isn't a quick fix, but hopefully my persistence will pay off.

 

you do know that vagcom will graph FOR you, don't you?

 

Yeah but I can't figure out how to record those graphs. : /

 

theres a record, or log, or something button there somewhere. I loaned my stuff out, so I can't look at it myself right now.

Thinking i need to upgrade to the USB, CAN capable version sometime here. But thats unrelated.

 

First you have to Log some data...



Click on the "Meas Blocks - 08" button and you'll see this screen...



Then select the channel(s) you want to log...do a couple of WOT runs in third gear..

Start out On block 002, the g/sec should reach around 150 for a 180 and around 180 for the 225. Anything higher is fine. Lower number indicate a bad or failing MAF.

Block 032 should be a little lean on both settings. Optimal should be 0, but usually the partial throttle is around +3.1. If either moves 10% higher or lower, the computer will put the car into limp mode and boost will be around 5psi.

To see the graphs click on the "VC-Scope" button and you'll see this...

 

Okay no problem logging data, and I'm somewhat familiar with the vc-scope feature.

Is there anyway to use previously logged data (saved from a few days ago) and open it with vc-scope?

 

Yes, you just save your log and open it with Vag Scope in standalone mode. The Executable file (vagscope.exe) is in the same folder as the Vag-com files.

 

Pure awesomeness! Thanks Steve!

 

steve is the man.

 

There are some good Excel graphs around as well on the Ross-Tech site. Look down toward the bottom of this page... Excel Graphs