Guys,

Do JHM do a diff swap?
I've heard that if you purchase their centre diff for the B5, in order to change the bias from 2:1 to 4:1 a la RS4 and I believe late model S4s, they will issue a partial refund on your centre diff, if you send them yours as part ex.?

Also, would swapping over the JHM centre diff for my centre diff be a straight swap?

if not, as a second option, do JHM sell the bias modification kit?

No.
I can get the parts ($70), but whether it works depends on the part I have, so may not be possible. Thought therefore it might be easier to swap the whole unit over?

Hi folks, sorry i haven't replied sooner, been away working on an RS all week . JHM do a 4.1 diff, and it does make a difference. I have just got home, and will get you some more info tom.


Cheers John

So what are the advantages of changing the diff?

better cornering, improves traction efficiency.

I getcha

As Dom says. Big difference.

And one I will be exploiting real soon.