ats billet with 5star problem

[HullD]

Installed an ats billet with 5star friday and drove 1000 miles back home today.

Everything works well except for the shifts bang so hard it makes your teeth chatter.

I suspect it may have high line presure,but wuy is the question?

Maybe its from the vpa they have you wire in?

Well anyhow I would be thankfull for any input on this problem.

 

[daytripper63]

Watch out for the spring on drivers side of transmission where it connects to lever if spring is pulling in wrong direction it will increase pressure on shifts and bang like u say, I hooked up the spring backwards on my 98 with an ats trans and it did as u say but once corrected all was good