Vaccum Mod In A 4l60e
#7
LS1Tech Sponsor
iTrader: (25)
The pcm lowers and raises line preasure for more reasons than just throttle position , It monitors temperature , converter slip % and shift error times and ajust preasure acordingly ,A vacume modulaor defeats its ability to do that ,
www.performabuilttransmissions.com
www.performabuilttransmissions.com
Trending Topics
#10
Launching!
Join Date: May 2003
Location: Canadian West Coast
Posts: 290
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by performabuilt
The pcm lowers and raises line preasure for more reasons than just throttle position , It monitors temperature , converter slip % and shift error times and ajust preasure acordingly ,A vacume modulaor defeats its ability to do that ,
www.performabuilttransmissions.com
www.performabuilttransmissions.com
#11
LS1Tech Sponsor
iTrader: (25)
I can understand the programing issue As for how it works it pretty simple really , its and electronic valve that vents presure by cycling on and off and varying speeds.
But I can definatley understand why that might be a difficult setting to make in programing , So what we do is turn the torx screw in the center 1/4 turn clockwise , which basically shortens the open time by applying more force to the return this causes and across the board 4-6 psi increase , Yet the pcm is not the wiser so it continues with normal control as if there has been no change this works well increases all apply presures and even lockup is improved with no fear of solinoid flooding which can happen when you raise the presure by other means ,
www.performabuilttransmissions.com
But I can definatley understand why that might be a difficult setting to make in programing , So what we do is turn the torx screw in the center 1/4 turn clockwise , which basically shortens the open time by applying more force to the return this causes and across the board 4-6 psi increase , Yet the pcm is not the wiser so it continues with normal control as if there has been no change this works well increases all apply presures and even lockup is improved with no fear of solinoid flooding which can happen when you raise the presure by other means ,
www.performabuilttransmissions.com