[Biturbos4] Bum Turbo??? Help me with the Gutless Wonder!

[j y]

1) Are u chipped? If yes, do u have a boost gauge? If yes, what's it reading at low rpms?
 
2) If you aren't chipped - log channel 115 in VAG-COM to get your actual/requested boost. Non chiped boost should be less than 1 MBAR (14.7 psi). Chipped S4s can use this channel to see what the ECU is reading in terms of boost too. 
 
3) You already did a throttle body adaptation using VAG-COM - so that doesn't appear to be the problem.
 
4) Check your VAG-COM fault codes for DTCs.


Adam Jansen <aedan1 at hotmail.com> wrote:
With all this talk about torque down low, it really has me wondering what is 
up with my 00 S4...

I was having problems with the potentiometer in the Throttle aways sending 
me into EPC, really wrecking havoc with my 'fun'. SO I openned up the TB 
(even though bentley says no) and cleaned the contact runners for the 
throttle position sensors...

Well my car still doens't want to 'run' until I am up over 3KRPM - it is 
dead in the low power band.
Did the adaption on the TB, gettin 12.5% and 83.9% for the two readings on 
062 so I am within spec (although 87% is max openning reading on throttle). 
So it doesn't appear to be that causing my problem

Also did a boost leak test, no leaks that I could hear. Interesting when I 
started the car afterwards I had a good deal of smoke for about 1.5 miles 
trailing behind me...
But still no leaks, so that shouldn't be it either...

How can I tell if one of my turbos has gone south and I am spooling on one 
turbo only?

is this somethinng Vag-Com can monitor?

I really miss the head snapping grunt on the low end and want to know where 
it went!

thanks
Adam
SPokane, WA
00 S4 59K miles


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