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      08-05-2015, 12:44 AM   #21
lowside67
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Drives: 2011 BMW 128i
Join Date: Apr 2015
Location: Vancouver, Canada

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Diffsonline 3.23 3-Clutch Ramped Limited Slip Differential

While I love photo porn, the reality is that there really is nothing to photograph for this week. I had a local shop tackle a few projects that I couldn't get done, this has been a HUGE transformation. Nothing to see, but everything to talk about...

We installed:
1) M Rear Subframe Bushings
2) Hotchkis Rear Swaybar
3) Diffsonline 3.23 3-Clutch Ramped LSD

What a transformation! "Night and day" doesn't even begin to do justice to the difference that these modifications have made. All of a sudden the car no longer feels nervous and vague over transitions, but instead direct and composed. As soon as the car is even a bit unsettled, some throttle immediately brings the tail into line and powers out of the corner.

The car is still on the silly runflat tires while I wait on the coilovers to install the sticky tires, and even with these low grip tires, the behaviour of the car has dramatically changed. The LSD I spec'd is very aggressive and that diff locks very quickly under throttle but is actually very well mannered on the street, even in tight parking spots or other situations where aggressive differentials tend to make themselves known.

My ramp choice is VERY aggressive on the basis of the autocross application, but even a moderate one would be seamless under street driving and add stability, control, and the ability to put power down earlier on a road course.

I have to say, working with Dan at Diffsonline has been fantastic. We spoke, specified the exact characteristics I wanted, he gave me some feedback, we came to a resolution and less than a week later, the differential was in the mail. The price is not cheap but the workmanship can't be beat and I know if I ever have an issue, they stand behind it. To me, that's money well spent.

Looking forward to updating shortly after the coilovers are installed (that one will definitely have before and after pictures!).

Mark
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