AudiWorld Forums

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

A box, M box, H box... what's the difference?

Thread Tools
 
Search this Thread
 
Old 12-17-2002, 01:38 PM
  #1  
New Member
Thread Starter
 
skateparks's Avatar
 
Join Date: Apr 2002
Posts: 115
Likes: 0
Received 0 Likes on 0 Posts
Default
A box, M box, H box... what's the difference?
skateparks is offline  
Reply Like
Old 12-17-2002, 01:52 PM
  #2  
AudiWorld Super User
 
Steve Trac, Sec 303's Avatar
 
Join Date: Aug 2001
Posts: 21,880
Received 3 Likes on 3 Posts
Default
different year cars w/ different transmissions have different ECUs. 3/2001 build date w/ 6-speed = M
Steve Trac, Sec 303 is offline  
Reply Like
Old 12-17-2002, 02:03 PM
  #3  
New Member
Thread Starter
 
skateparks's Avatar
 
Join Date: Apr 2002
Posts: 115
Likes: 0
Received 0 Likes on 0 Posts
Default Re: different year cars w/ different transmissions have different ECUs. 3/2001 build date w/ 6-speed
What happens if you swap an M for an H?
skateparks is offline  
Reply Like
Old 12-17-2002, 02:21 PM
  #4  
New Member
Thread Starter
 
skateparks's Avatar
 
Join Date: Apr 2002
Posts: 115
Likes: 0
Received 0 Likes on 0 Posts
Default
What happens if H is swapped for M?
skateparks is offline  
Reply Like
Old 12-17-2002, 02:21 PM
  #5  
Senior Member
 
xr8edS4's Avatar
 
Join Date: Aug 2001
Posts: 8,608
Likes: 0
Received 0 Likes on 0 Posts
Default
You can only swap a T for an M and vice versa.
xr8edS4 is offline  
Reply Like
Old 12-17-2002, 02:23 PM
  #6  
New Member
Thread Starter
 
skateparks's Avatar
 
Join Date: Apr 2002
Posts: 115
Likes: 0
Received 0 Likes on 0 Posts
Default
Oops...93 octane w/stock mode H box for sale...
skateparks is offline  
Reply Like
Old 12-17-2002, 02:30 PM
  #7  
AudiWorld Super User
 
Andrew C.'s Avatar
 
Join Date: Mar 2000
Location: SF Bay Area
Posts: 10,628
Received 27 Likes on 22 Posts
Default there have been reports of success swapping H & M
A box w/ no ESP, different MAF, etc. probably has much lower chance of working.

test it out and report back!! =)
Andrew C. is offline  
Reply Like

Trending Topics

Old 12-17-2002, 02:34 PM
  #8  
New Member
Thread Starter
 
skateparks's Avatar
 
Join Date: Apr 2002
Posts: 115
Likes: 0
Received 0 Likes on 0 Posts
Default I have problems since I installed it.
I have a problem with EPC light on (not ESP), running rough and lack of power after 4,000 rpm. Most people here have suspected MAF but I now am concerned I have the wrong ECU.
skateparks is offline  
Reply Like
Old 12-17-2002, 03:35 PM
  #9  
AudiWorld Super User
 
cpayne's Avatar
 
Join Date: Sep 2000
Posts: 9,705
Likes: 0
Received 0 Likes on 0 Posts
Default
My 9/00 Build has a M Box 551M
cpayne is offline  
Reply Like
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
could i flash a B box to a J box?
JordanS4
S4 / RS4 (B5 Platform) Discussion
1
06-07-2006 03:41 PM
So whats faster A box, M box , or T box????? TIA
spt@lubzu
S4 / RS4 (B5 Platform) Discussion
11
02-12-2006 03:35 PM
whats difference between A box and M box?? Dont quite understand.
AJN334
S4 / RS4 (B5 Platform) Discussion
2
09-12-2004 04:59 PM
Whats the differences between boxes?? M? H? Which one is better, why?
BASELINE
S4 / RS4 (B5 Platform) Discussion
7
03-05-2003 08:01 AM
Back to Subforum
S4 / RS4 (B5 Platform) Discussion
View Next Unread
Volk Wheels.....




Advanced Search
Quick Reply: A box, M box, H box... what's the difference?


Reply Closed Thread Share

All times are GMT -8. The time now is 08:16 AM.