I searched so dont flame!
i recently installed a OBX LSD and the car pulls great. I only track the car, straight line... I am smashing from 1st-3rd no problem but as soon as I hit 4th gear, the speedo jumps all over the place. I have a hondata 2 step and it is activated by the vss, what it does is makes the two step engage in 4th gear when the speedo goes crazy...

issue: speedo bounces around only in 4th gear, what could it be?

 

are you getting a CEL 17?

 

nope, no cels... =\

 

any new tips on this issue...