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

Revo logs .. Thoughts?

Thread Tools
 
Search this Thread
 
Old 11-13-2006, 06:52 AM
  #1  
AudiWorld Super User
Thread Starter
 
BLK01S4's Avatar
 
Join Date: Mar 2003
Posts: 5,860
Likes: 0
Received 0 Likes on 0 Posts
Default Revo logs .. Thoughts?

Since I can't really afford any custom tuning or have time to ship my car to ASP or EPL, I figured it was worth revisiting my Revo tune. This tune is a stage III K04 Tiptronic one of file that was made on my car. My car exibits NO part throttle problem like it does on GIAC, I can't tell you how butter smooth it really is they have very good control over transmission and sorts.... I get no throttle cut like I was mentioning in my earlier posts on the 3-4 shift. The only downsides to this software are the horrible startup/warmup I have to sort out (It wont even start cold) and the fact that I keep going into EGT enrichment at WOT.

I was showing these logs to AH10 (Anthony) and he suggested the high EGTs were caused by the fuel not really burning off inside the combustion chamber but rather as it exits into the exhaust manifold making my EGTs go through the roof. He mention that this is caused by the cars lack of timing advance (I was running -3 degrees at the time wasn't sure what to expect from this software just to be safe)

I did 4 runs, the run in light blue was my first run and the lemmiwink settings were Primary 0% timing -3. The other runs were done at either +5% primary and +8% primary and -2.25% degrees of timing. Anthony and I came to the conclusion that if I run at 5% primary and 0 on timing that the high EGTs might go away. According to my wideband the car stays at 11.5 throughout the run.

Anybody else have any ideas on how to fix the high EGT problem ? I am going to test Anthony's theory tonight. I would really like to run this code since it happens to work so well believe it or not.

Here are the logs:

<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-1.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-2.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-3.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-4.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-5.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-6.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-7.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-8.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-9.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-10.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-11.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-12.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-13.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-14.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-15.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-16.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-17.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-18.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-19.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-20.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-21.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-22.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-23.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-24.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-25.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-26.gif">
<img src="http://i2.photobucket.com/albums/y15/blk01s4/Revo_Nov12th/4runs_compare_graph_v10-27.gif">
Old 11-13-2006, 08:08 AM
  #2  
AudiWorld Member
 
cranch's Avatar
 
Join Date: Jun 2004
Posts: 302
Likes: 0
Received 0 Likes on 0 Posts
Default I'd send it back where you got it from ;)

It looks rather rich to my untrained eye and your knock voltages are timing don't seem very lovely either.
Old 11-13-2006, 08:26 AM
  #3  
Member
 
Ochlockonee's Avatar
 
Join Date: Mar 2004
Posts: 2,948
Likes: 0
Received 0 Likes on 0 Posts
Default AH10 is right about the bad timing and egts.

I think you know how I feel about using a maf that's too big
You could try pulling about 10 more degrees of timing with lemmi, then resetting the ecu or unplugging it, whatever it takes to erase the timing correction factor memory, then check to see what your timing at WOT is.
I'm not suggesting that you always drive your car with 10+ degrees of timing pulled, just try it as a diagnostic test. I'd be interested in seeing if your timing actually improves.
Old 11-13-2006, 09:29 AM
  #4  
AudiWorld Super User
Thread Starter
 
BLK01S4's Avatar
 
Join Date: Mar 2003
Posts: 5,860
Likes: 0
Received 0 Likes on 0 Posts
Default ah well it was coded for a 95mm I am on a 90now. I do have a 88

I can test with. I'll try out what you suggested.
Old 11-13-2006, 09:30 AM
  #5  
AudiWorld Super User
Thread Starter
 
BLK01S4's Avatar
 
Join Date: Mar 2003
Posts: 5,860
Likes: 0
Received 0 Likes on 0 Posts
Default actually its right where it needs to be 11.5 according to my wideband

I wouldnt trust the readings from the narrow bands on Revo I added a lot of fuel just to get to 11.5 and it still says .86v. I think they fudge the output or something.
Old 11-13-2006, 10:41 AM
  #6  
AudiWorld Super User
 
EdyJun's Avatar
 
Join Date: Dec 2002
Posts: 2,718
Likes: 0
Received 0 Likes on 0 Posts
Default How boost are u running? Knock look good for that IAT.

What does ur CF hit?

Tell me more about the light blue run (#4 maybe.

It has the lowers inc DC% and best timing even w/ higher starting IAT. I can see its not the fastest FATS time.
Old 11-13-2006, 11:43 AM
  #7  
AudiWorld Super User
Thread Starter
 
BLK01S4's Avatar
 
Join Date: Mar 2003
Posts: 5,860
Likes: 0
Received 0 Likes on 0 Posts
Default Spike 26 taper to 22-23

I am going to plug the turbos back into the N75 since revo has the boost setup already. Its aggressive for sure, I am going back to the settings for the blue run to study if I can get it any better.

Also have to stabilize the MAF reading via APEXI its a bit bumpy, my DC is wacky so I gotta adjust. uGH!
Old 11-13-2006, 11:58 AM
  #8  
AudiWorld Super User
 
EdyJun's Avatar
 
Join Date: Dec 2002
Posts: 2,718
Likes: 0
Received 0 Likes on 0 Posts
Default

For that boost profile the knocks is not bad. Timing looks ok.
Old 11-13-2006, 12:01 PM
  #9  
AudiWorld Super User
 
EdyJun's Avatar
 
Join Date: Dec 2002
Posts: 2,718
Likes: 0
Received 0 Likes on 0 Posts
Default

I am wondering... did u pull the ecu since ur last tweak?
Old 11-13-2006, 12:20 PM
  #10  
Junior Member
 
k04/rs6north's Avatar
 
Join Date: Dec 2002
Posts: 1,715
Likes: 0
Received 0 Likes on 0 Posts
Default that N75 duty is rediculous, try a MBC in parallel set at 23/24 and I bet timing will go up a lot ..

- you are running rs6 clearanced hybrids correct? if yes, I would think that 95%DC would have you spiking at 2 bar and thus destroy your timing

- 80% DC on my hybrids give me 24psi that tapers to 22.5


Quick Reply: Revo logs .. Thoughts?



All times are GMT -8. The time now is 02:30 PM.