P71 J mod Tranny help

4 posts 3 contributors 592 views

Member since Aug 2016
6 posts
Athens, GA, USA
1 vehicle in the registry

Aug 3, 2016 at 10:15 AM

I have a 06 P71 4.6L Diablo sport tuned for 3.73 gears. Its also been J modded. The shifts sometimes are very harsh mostly from 1st to 2nd. More harsh than firm in my opinion is this normal. an what should I expect from a j modded tranny. I'm new to this j mod

edited Aug 3, 2016 at 10:30 AM

MattyBees

Member since Jul 2016
8 posts
Kekaha, HI, USA
2 vehicles in the registry

Aug 3, 2016 at 6:32 PM

Mlump, I'm def not expert but have witnessed riding before with car that had tranny with modded shift kit. They shift hard and fast and feels like the tires are going to rip the pavement sometimes.

hondaclf

Member since Feb 2009
244 posts
Baldwin, NY, USA
4 vehicles in the registry

Aug 3, 2016 at 8:00 PM

The Jmod should be nice and firm, not really harsh.
Do you have the trans pressures changed with the tuner?
Do you have all the springs in the trans or did you take one or 2 out with the Jmod?
How is the fluid? Level?

Mlump24OP

Member since Aug 2016
6 posts
Athens, GA, USA
1 vehicle in the registry

Aug 5, 2016 at 5:51 AM

really not sure about the trans pressures but its tuned by a diablo sport u7147. I will have to ask the original owner about what springs he removed.

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