Rennlist - Porsche Discussion Forums

Notices
944 Turbo and Turbo-S Forum 1982-1991
Sponsored by:
Sponsored by: Clore Automotive

Modified A Tune - Dyno Results

Thread Tools
 
Search this Thread
 
Old 06-17-2011, 01:05 PM
  #16  
User 52121
Nordschleife Master
 
User 52121's Avatar
 
Join Date: Mar 2006
Posts: 8,695
Received 134 Likes on 91 Posts
Default
Originally Posted by refresh951
Sid,

User 1 is AFM voltage. I am not running a PB. I originally was running FQS at position 0 but moved to Position 1 and it is a little rich but safe. Running E85 and the larger injectors exacerbate the variance in the AFM (thus the M-Tune) and I am running on the safe side. The move to FQS #1 was the extent of my tuning. Absolutely no knock at 18 psi.
What does the AFM max out at, voltage-wise? Considering that line looks completely and perfectly flat, it seems like you've maxed it out, no?
User 52121 is offline  
Reply Like
Old 06-17-2011, 05:17 PM
  #17  
refresh951
Rennlist Member
Thread Starter
 
refresh951's Avatar
 
Join Date: Jun 2010
Location: Marietta, Georgia
Posts: 3,365
Likes: 0
Received 22 Likes on 9 Posts
Default
Originally Posted by OmniGLH
What does the AFM max out at, voltage-wise? Considering that line looks completely and perfectly flat, it seems like you've maxed it out, no?

Yes, 4.6-4.7 volts is the max output of the AFM
refresh951 is offline  
Reply Like
Old 06-17-2011, 05:38 PM
  #18  
User 52121
Nordschleife Master
 
User 52121's Avatar
 
Join Date: Mar 2006
Posts: 8,695
Received 134 Likes on 91 Posts
Default
Originally Posted by refresh951
Yes, 4.6-4.7 volts is the max output of the AFM
So then it would stand to reason that, for this reason alone, you should see even more power jumping into his MAF @ 18psi...
User 52121 is offline  
Reply Like
Old 06-17-2011, 05:54 PM
  #19  
Rogue_Ant
Addict
Rennlist Member
Rennlist
Small Business Partner
 
Rogue_Ant's Avatar
 
Join Date: May 2006
Location: Denver
Posts: 5,252
Likes: 0
Received 4 Likes on 4 Posts
Default
Yep, we typically see a good increase across the board by removing the AFM.
Here is a dyno of the A-Tune vs M-Tune. No tuning changes (besides the MAF code), and these pulls were done within minutes of eachother.
Attached Images  
Rogue_Ant is offline  
Reply Like
Old 06-17-2011, 06:13 PM
  #20  
Jeff N.
Burning Brakes
 
Jeff N.'s Avatar
 
Join Date: Oct 2006
Location: Bellevue, WA
Posts: 991
Received 0 Likes on 0 Posts
Default
Out of curiosity....is this removing the stock airbox and AFM or is this change from a cone filter fed AFM? Just trying to see how many variables are in play.....
Jeff N. is offline  
Reply Like
Old 06-17-2011, 06:17 PM
  #21  
Rogue_Ant
Addict
Rennlist Member
Rennlist
Small Business Partner
 
Rogue_Ant's Avatar
 
Join Date: May 2006
Location: Denver
Posts: 5,252
Likes: 0
Received 4 Likes on 4 Posts
Default
The A-Tune was using the stock airbox (w/ K&N filter).
The M-Tune uses a cone filter positioned behind the headlight.
Rogue_Ant is offline  
Reply Like
Old 06-17-2011, 07:32 PM
  #22  
minho78
Burning Brakes
 
minho78's Avatar
 
Join Date: Apr 2009
Location: Westchester NY
Posts: 1,167
Likes: 0
Received 0 Likes on 0 Posts
Default
Josh, all I can say is excellent work. Even my co-workers that are car heads were shocked with the torque for the AFM and K26/6.
minho78 is offline  
Reply Like
Old 06-17-2011, 07:45 PM
  #23  
Rogue_Ant
Addict
Rennlist Member
Rennlist
Small Business Partner
 
Rogue_Ant's Avatar
 
Join Date: May 2006
Location: Denver
Posts: 5,252
Likes: 0
Received 4 Likes on 4 Posts
Default
Thanks Manny
Rogue_Ant is offline  
Reply Like
Old 06-17-2011, 09:19 PM
  #24  
Black51
Three Wheelin'
 
Black51's Avatar
 
Join Date: May 2010
Location: Edmonton, AB
Posts: 1,956
Likes: 0
Received 9 Likes on 8 Posts
Default
Ya that's a very impressive dyno, even with the A tune and AFM on the car. That's quite a considerable difference from there switching to the MAF as well.

Is that using a k26/6?
Black51 is offline  
Reply Like
Old 06-17-2011, 09:24 PM
  #25  
Rogue_Ant
Addict
Rennlist Member
Rennlist
Small Business Partner
 
Rogue_Ant's Avatar
 
Join Date: May 2006
Location: Denver
Posts: 5,252
Likes: 0
Received 4 Likes on 4 Posts
Default
The Dyno plot I put up was a K26/8. Peak numbers aside, the interesting thing is the % change across the board for switching to MAF.
Rogue_Ant is offline  
Reply Like
Old 06-17-2011, 09:35 PM
  #26  
George D
Drifting
 
George D's Avatar
 
Join Date: Aug 2006
Location: Tucson and Greer Arizona
Posts: 2,659
Likes: 0
Received 0 Likes on 0 Posts
Default
Originally Posted by minho78
Josh, all I can say is excellent work. Even my co-workers that are car heads were shocked with the torque for the AFM and K26/6.
I'll back this up. Great job, and nice results. Great value for the money.
George D is offline  
Reply Like
Old 06-17-2011, 10:02 PM
  #27  
CyCloNe!
Race Car
 
CyCloNe!'s Avatar
 
Join Date: Dec 2009
Location: Virginia Beach, VA 23464
Posts: 4,093
Received 121 Likes on 103 Posts
Default
Great Dyno! I know since I got my C-Tune Maf setup the car is never felt so good. I have a k27 7200 cold side and I'm almost tempted to just leave the k26/6 in there....almost
CyCloNe! is offline  
Reply Like
Old 06-17-2011, 11:04 PM
  #28  
max_boost951
Racer
 
max_boost951's Avatar
 
Join Date: Dec 2010
Location: Beavercreek, OH
Posts: 290
Received 0 Likes on 0 Posts
Default
Holy torque batman!
max_boost951 is offline  
Reply Like
Tags
Back to Subforum
944 Turbo and Turbo-S Forum
View Next Unread
Can I use 951 top mounts on 968 struts?




Advanced Search
Quick Reply: Modified A Tune - Dyno Results


Reply Closed Thread Share
Forum Jump

All times are GMT -3. The time now is 11:55 PM.