Why trans pressure modifiers?
01-06-2006, 06:41 PM
#1
TECH Enthusiast
Thread Starter
iTrader: (15)
Join Date: May 2005
Location: Valdosta, georgia
Posts: 549
Likes: 0
Received 0 Likes
on
0 Posts
Why trans pressure modifiers? If you just program what pressures you want, at what temp and torque. Then why would you need the pressure modifier blocks? Why not just put in the pressures in the base pressure table.
01-07-2006, 08:28 AM
#3
Moderator
iTrader: (11)
Join Date: Mar 2002
Location: East Central Florida
Posts: 12,605
Likes: 0
Received 6 Likes
on
6 Posts
I've never seen a good explanation of what they
do or how they work but I think, for example, you
could be upshifting or downshifting at the same load
and similar speeds, depending on the driving situation,
and you might want a different pressure depending
on the gear change (2-3 vs 3-2) just because every
one is a different combo of apply & release actions,
thus each having a different "sweet spot".
But I sure would like to see some discussion of the
details & intent.
do or how they work but I think, for example, you
could be upshifting or downshifting at the same load
and similar speeds, depending on the driving situation,
and you might want a different pressure depending
on the gear change (2-3 vs 3-2) just because every
one is a different combo of apply & release actions,
thus each having a different "sweet spot".
But I sure would like to see some discussion of the
details & intent.
01-07-2006, 06:21 PM
#4
TECH Fanatic
iTrader: (9)
Join Date: Jun 2005
Location: Miami,Fl
Posts: 1,682
Likes: 0
Received 0 Likes
on
0 Posts
guys will tuning have anything to do with my freshly rebuilt a4 not holding 3rd and 4th gear?someone told my tranny mech that my ecm has to be reprogram is this true please help?
01-07-2006, 07:23 PM
#5
Moderator
iTrader: (11)
Join Date: Mar 2002
Location: East Central Florida
Posts: 12,605
Likes: 0
Received 6 Likes
on
6 Posts
A tune might have to do with it but a fresh rebuild
should act no different (or rather, no worse) than
stock.
Have to determine whether it's the trans, or the
torque converter clutches that are slipping. A bit
of road logging would put that plain. Never heard
of a stock converter having a clutch slip problem
though.
The likeliest way for a stock car to start slipping
I think is MAF fouling / porting. That's tune related.
But I'm thinking "point the finger at the other guy",
is maybe going on, here.
should act no different (or rather, no worse) than
stock.
Have to determine whether it's the trans, or the
torque converter clutches that are slipping. A bit
of road logging would put that plain. Never heard
of a stock converter having a clutch slip problem
though.
The likeliest way for a stock car to start slipping
I think is MAF fouling / porting. That's tune related.
But I'm thinking "point the finger at the other guy",
is maybe going on, here.
01-07-2006, 09:29 PM
#6
TECH Fanatic
iTrader: (9)
Join Date: Jun 2005
Location: Miami,Fl
Posts: 1,682
Likes: 0
Received 0 Likes
on
0 Posts
wat exactly do u mean by this?
The likeliest way for a stock car to start slipping
I think is MAF fouling / porting. That's tune related.,because i have my maf ported .but i ported my maf like 5 months before the tranny even gave up on me?
The likeliest way for a stock car to start slipping
I think is MAF fouling / porting. That's tune related.,because i have my maf ported .but i ported my maf like 5 months before the tranny even gave up on me?
