S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

Anyone here had problems with AVC-R not making full boost in 1st and 2nd?

Thread Tools
 
Search this Thread
 
Old 04-15-2006, 07:14 AM
  #1  
Member
Thread Starter
 
Ochlockonee's Avatar
 
Join Date: Mar 2004
Posts: 2,948
Likes: 0
Received 0 Likes on 0 Posts
Default Anyone here had problems with AVC-R not making full boost in 1st and 2nd?

All my inputs are hooked up including VSS.
Old 04-15-2006, 07:23 AM
  #2  
AudiWorld Super User
 
dscottjr's Avatar
 
Join Date: Sep 2002
Posts: 14,586
Likes: 0
Received 0 Likes on 0 Posts
Default IIRC, Nick G had problems in first so he shut off the gear learning for that gear. I've not

experienced that problem.
Old 04-15-2006, 07:40 AM
  #3  
Senior Member
 
Nick Gustas's Avatar
 
Join Date: Mar 2000
Posts: 7,467
Likes: 0
Received 0 Likes on 0 Posts
Default Mike2ks4 said to shut it off in first and 2nd since they don't last long enough for it to learn :)

Or something along those lines anyway.
Old 04-15-2006, 07:41 AM
  #4  
Senior Member
 
Nick Gustas's Avatar
 
Join Date: Mar 2000
Posts: 7,467
Likes: 0
Received 0 Likes on 0 Posts
Default Bump up the initial duty cycle for those gears, try 6% for 1st, and 2% for 2nd, see if you like it.

Adjust from there.
Old 04-15-2006, 08:21 AM
  #5  
Member
Thread Starter
 
Ochlockonee's Avatar
 
Join Date: Mar 2004
Posts: 2,948
Likes: 0
Received 0 Likes on 0 Posts
Default

Sounds about right. It never overshoots, so maybe that's the whole problem.
Old 04-15-2006, 11:32 AM
  #6  
Junior Member
 
k04/rs6north's Avatar
 
Join Date: Dec 2002
Posts: 1,715
Likes: 0
Received 0 Likes on 0 Posts
Default believe learning only happens above 85% throttle (how often do you do this in 1st)...

- therefore, just do wht Nick Gustas said as a start
- if you are very happy with your 3rd gear boost curve, then all it takes is a few initial wot runs in 2nd to very quickly adjust the initial duty cycle for second gear to exactly match the initial boost spike that you programed for third gear
- I wouldn't even bother for first unless the drag strip is your thing
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jason60077
S4 / RS4 (B5 Platform) Discussion
1
03-29-2009 09:11 AM
canyoncarver2
S4 / RS4 (B5 Platform) Discussion
6
01-05-2008 07:55 AM
rageman
A6 / S6 (C5 Platform) Discussion
5
10-29-2006 07:26 PM
01Raven225Coupe
TT (Mk1) Discussion
3
06-03-2005 09:48 AM
Distinct
S4 / RS4 (B5 Platform) Discussion
14
10-01-2004 11:43 AM



Quick Reply: Anyone here had problems with AVC-R not making full boost in 1st and 2nd?



All times are GMT -8. The time now is 01:39 AM.