Senior Member (>500)
Join Date: Apr 2011
Thanked 44 Times in 38 Posts
I have the 3.91 on mine and I do love it, it does have some downsides though.
In automatic mode, the car wont shift gears by itself, you have to make it do so by easing on the gas pedal. The thing I really like is, if your at 40mph in 6th or 7th gear, just giving gas will return so much more torque, its like you dont have to downshift.
This is certianly a TRUE MOD with an absolute BANG for your buck completing the E60 M5 by providing better low end torque, a segment that was lacking the most.
I am about to top it off with a Pulley and headers later next month.
My Diff has the whinning noise, but its not too bad. I can hear it but it doesnt bother me that much since I play my music when in the car all the time.
Important Note to Everyone looking at Dinan Diff
One would think that Dinan is a big company who has product numbers on their parts but the answer is a straight NO.
So, please keep your invoice/proof of purchase with you, in case there is any warranty issue, because without it they dont warranty anything. Also, register your purchase on their website.
Last edited by TheRacerBoss; 19th March 2012 at 03:46 PM.