Hello guys,
Since 4 months i installed the new differential that has been built from Florian Seibold (limitidedslip.de) driftflo username.
My previous car was an e36 m3 evo 321ps which i enjoyed until the last day i sold it. As already known it has a ZF lsd plated diff with 25% lock and indeed it was very fun to drive.
Then i bought my e46 m3 and generally the car was in a higher level except the rear diff which it did the job but not so precise and plant.
So after many days and hours spended in forums i had the luck to find the website from Florian from this LSD SHOOTOUT POST
Although i know many things how an lsd works i took contact with him to ask what he would suggest me.
After writing many helpfull mails with him we decided to go with the following setup:
4 clutch upgrade with 45/45 degrees ramps in ZF 2way housing that would upgrade the locking precentage at 40-45%
Between 50-70nm static preload as i wanted as less as possible understeer and no noises or greedings
3.91 final drive
All bearings and seals new.
My requirements:
3-5 times per year in Nurburgring with semi slicks
1-2 times per month in mountain passes
2 drift events per year
and i wanted still to be used as a daily car when it needs.
I must admit that it was a diffucult decision because of many different opinions from this post and from many other forums.
This happens because the most people doesnt know how an lsd works and even less have personal experience and tried out many different setups so they can help us to decide what should we choose that will be the right one for our requirements.
Trust me all this guy has tones of personal experients
He has a E36 for drift school
A E46 M3 race car that tried out many setups
A E92 M3 private car for his joyness the same here if i remember right over 6 different brands and many from his own ZF setups
And a MERCEDES C63AMG Station for his family that recently upgraded the oem LSD as i read here.
All this i saw personally because i had the luck to pick up my diff from his house in Germany as i live in Switzerland and he is 280km far away from me.
I met him personally we spoke around 2 hours about diffs , i saw also his labor.
Really a good guy full of knowledges.
Now the result after 4 months driving the car in every condition.
All the thoughts that the car will be abruptness and maybe dangerous in the wet just dissapeared when i drove it.
Its just amazing how the car behaves so planted very smooth operation excellent control with the gas pedal during drifting not lock unlock like the oem and no waiting until it will lock, its just there silent and does really the job that everybody would wish.
Even in the wet its just so easy to control the car during the corners , the rear end gives me so much trust , it warns before it will slide. With few words 100% satisfied.
The final drive 3.91 was another big improvement its everywhere faster during accelaration. The average consumption rised 0.4l pro 100km and the rpm are a bit higher but nothing to disturb. I was between 4.10 and 3.91 and for a street car i suggest 3.91 its just fine but for the track and especially Nurburgring i would go with 4.10.
As for the trackdays with the semislicks the new lsd operates very decent , no understeer noiseless and a nice feeling when i hit the gas after a turn like it slightly opens the tail, like the wheel is in the rear
Its feels very stable during deceleration in comparison with the oem one especially in high speeds the rear is more tight. This happens because the oem one it locks only in acceleration but the new is 2way
No problems with the DSC control.
My conclusion is that it paids of the money for this upgrade and my opinion for a car that has street tyres on it and often goes for trackdays with semi slicks , this is all you need. No more locking no more preload and no need for hardcore aftermarket units.
The final drive has to do with the personal preferences that everybody has.
For track work and slicks i can not have an opinion but be sure that Florian has. But as he told me very clearly there is not a differential that can do everything but there is a setup that suits your skills, use and style of driving and i am very happy that i went with his suggestion.
This guy is only to reccomend, a really pro that knows perfect his stuff.
Thank you very much Florian and soon you will hear from me as my brother bought a BMW 130 unfortunately with open diff.