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

MAF unplug = no lag in tip transmission?

Thread Tools
 
Search this Thread
 
Old 03-23-2005, 08:33 AM
  #1  
AudiWorld Member
Thread Starter
 
boxster02's Avatar
 
Join Date: Feb 2005
Posts: 516
Likes: 0
Received 0 Likes on 0 Posts
Default MAF unplug = no lag in tip transmission?

Upon removing the MAF sensor plug, the first thing I noticed was the removal of the 1 second lag (significant) between shifting from neutral to Drive. Before it seemed that the transmission had to "hunt" for the drive gear, sometimes even resulting in a horrible minor neutral drop from small pressure on the pedal...

Now the shift is almost instantaneous, which is also noticible when the car downshifts while slowing to a stop (crisper shifts)...

As a side note, the car seems to be idling and driving a little better, smoother....

My CEL light has been on... I am getting a VAG tool soon I hope....when i get the cash.. I'm so cal if anyone lives in orange county and wants to be a good samaratin

ANY IDEA WHAT THESE CHANGES INDICATE?

Thanks
Old 03-23-2005, 08:54 AM
  #2  
AudiWorld Super User
 
Imolavirus@BuehnEngineering's Avatar
 
Join Date: Mar 2002
Posts: 17,933
Likes: 0
Received 0 Likes on 0 Posts
Default

bad MAF if it's driving better with it unplugged?
Old 03-23-2005, 08:58 AM
  #3  
AudiWorld Member
Thread Starter
 
boxster02's Avatar
 
Join Date: Feb 2005
Posts: 516
Likes: 0
Received 0 Likes on 0 Posts
Default Re: bad MAF if it's driving better with it unplugged?

Lol. Not necessarily better, but smoother idle and rougher (better IMO) shifts.

Is it safe to drive for a while without it plugged in?

Any use in upgrading to an rs4 MAF?

Thanks
Old 03-23-2005, 09:01 AM
  #4  
AudiWorld Super User
 
Imolavirus@BuehnEngineering's Avatar
 
Join Date: Mar 2002
Posts: 17,933
Likes: 0
Received 0 Likes on 0 Posts
Default it's OK to drive with it unplugged for a little while

typically you're going to be running on the rich sideeeeee though because it's trying to adjust using the o2 values.

No use in upgrading to the RS4 MAF unless you're doing turbos/injectors as well. For just a stock car, replace the sensor.
Old 03-23-2005, 09:02 AM
  #5  
Elder Member
 
BiturboBoy_V2.0_S3--'s Avatar
 
Join Date: Dec 2000
Posts: 12,498
Likes: 0
Received 0 Likes on 0 Posts
Default i ran like that for a day or two. that shift form N to D is odd, almost like their is a lot of

engine load right off the bat. perhaps the idling conditions are different. I did not like that at all. and why are you having pressure ont eh gas pedal during your neutral to drive shift?
Old 03-23-2005, 09:03 AM
  #6  
AudiWorld Member
Thread Starter
 
boxster02's Avatar
 
Join Date: Feb 2005
Posts: 516
Likes: 0
Received 0 Likes on 0 Posts
Default Re: it's OK to drive with it unplugged for a little while

Rough estimate on Cost?
Old 03-23-2005, 09:03 AM
  #7  
AudiWorld Super User
 
Imolavirus@BuehnEngineering's Avatar
 
Join Date: Mar 2002
Posts: 17,933
Likes: 0
Received 0 Likes on 0 Posts
Default

why did you unplug the MAF in the first case?
Old 03-23-2005, 09:06 AM
  #8  
AudiWorld Member
Thread Starter
 
boxster02's Avatar
 
Join Date: Feb 2005
Posts: 516
Likes: 0
Received 0 Likes on 0 Posts
Default Re: i ran like that for a day or two. that shift form N to D is odd, almost like their is a lot of

Pressure on the gas from thinking that the car was actually in drive. Usually happened when the car REALLY lagged a few times between N and D... I could have counted 2-3 mississippi's between the shift and feeling the gear engage.
Old 03-23-2005, 10:33 AM
  #9  
Elder Member
 
BiturboBoy_V2.0_S3--'s Avatar
 
Join Date: Dec 2000
Posts: 12,498
Likes: 0
Received 0 Likes on 0 Posts
Default

tahts not normal. get your fluid checked.
Old 03-23-2005, 02:56 PM
  #10  
AudiWorld Senior Member
 
FBAnder's Avatar
 
Join Date: Mar 2003
Posts: 1,555
Likes: 0
Received 0 Likes on 0 Posts
Default agreed

My trans normally behaves like boxster described with his MAF unplugged. I have no odd N->D lag...or should I say HAD. As of right now I have no transmission at all. hah!


Quick Reply: MAF unplug = no lag in tip transmission?



All times are GMT -8. The time now is 08:53 AM.