billmck04

I have been a CVPI "enthusiast" for many years, This mod has been in the back of my mind for a while, It makes the 4r70w trans shift right, not all mush box. I was curious if anybody has applied it to a truck ? Or do I sound like I might have been drinking bong water ? Hopefully this link goes somewhere. - http://www.crownvic.net/tech/4R70Wnotes.pdf

bob101770

Good luck on this one. I asked the same thing several months ago and got no response. I ended up getting a Edge Evolution to firm up the shifts. I wanted to do this mod on a 98 mustang GT but got a Diablo tuner instead. The Diablo worked great on the mustang. The Edge on the F-150 not so good.

billmck04

J-Mod was done to my 99 CVPI, I loved the way it felt, chirp second, solid and firm.
My truck shift's like there is oatmeal in the trans - it always has, but I have just left it alone. I have a couple of friends that went with programmers and I was never impressed with the change, J-mod literally feels like a different trans.

97SlowWhite

Ive heard about it for the CV or MGM.. interested if it works on our f150 aswell.. hate the smooth shifting lol

obusnizzle

did it on my tbird about 10 years ago. my current transmission is built to jerrys specs. if you have specific questions, head over to tccoa.com

obusnizzle

the j-mod is frickin awesome. there are some flow differences in the valve body of the truck transmission, but those can be addressed when drilling the plate.

Ajaxs1988

Pardon me for asking but what does this mod do?

obusnizzle

its like a shift kit. but designed by the guy who more or less invented the 4R70W.

Ajaxs1988

Is that the same tranny that is coupled to the our f150? Cause I thought that they stop putting those in Ford in the early 90's and they were only put in cars. And what does it do make it more sporty?

obusnizzle

huh? The 4r70W has become the 4R75W/E. that makes no sense, it didnt come online until about hte mid 90s. makes the shift quicker.