Jmod whos done it?

[MGannaway]

Like the title says....whos done the Jmod to a 4r70w....experiences? how long did it last after? worth doing?

[1fast4]

Go on the MarkVIII forums there's a ton of info there about it.
Was gonna do it to my Mark until it met its demise :-(

[majorownage]

Easy. Makes the entire car more fun and shifts properly without hitting the rev limiter with bigger gears.

Make sure to follow the instructions to the tee or you could mess up your trans pretty royally.

[MGannaway]

I am thinking about doing it on my 97 5.0 awd Explorer