[52172]

Factory or team mfactory that ecs sells? What's the best to install one into our diff or replace the whole third member? What's the best setup and most cost effective? Thanks

[IK6SPEED]

Originally Posted by 52172

Factory or team mfactory that ecs sells? What's the best to install one into our diff or replace the whole third member? What's the best setup and most cost effective? Thanks

https://f30.bimmerpost.com/forums/sh....php?t=1534335

[52172]

Originally Posted by IK6SPEED

https://f30.bimmerpost.com/forums/sh....php?t=1534335

I like! You saved some cash there.

[Daftasabrush]

M Performance, love it.

I'll elaborate on that actually, I love it in my 340i MPPSK.

I had a 420D (your 428D) as a loaner for a few days and even that would have really benefited from a LSD.

Have RWD, get LSD IMO.

[XutvJet]

Most cost effective? The M Performance LSD by a mile. You can pick them up for slightly above/below $2,000 new from various BMW parts vendors. Install at a BMW dealer will run 3.5 hours (book time). I got mine from my BMW dealer (price matched Sun BMW) and I had them do the install (~$500).

The clutch-based MP LSD is a great LSD for street and typical street-driven car track use. The LSD is built for BMW by probably the best clutch-type LSD builder in the world.

If you want deeper gearing and/or a different LSD type, then you'll have to have one built by one of the few LSD builders. You'll often pay dearly for it though as most spend in excess of $3,000 to have one built to their specs by the typical LSD builders.

If you have increased the boost, deeper gearing really isn't necessary as the additional low and mid-range power makes up for the lack of gearing torque multiplication.

[52172]

Originally Posted by XutvJet

Most cost effective? The M Performance LSD by a mile. You can pick them up for slightly above/below $2,000 new from various BMW parts vendors. Install at a BMW dealer will run 3.5 hours (book time). I got mine from my BMW dealer (price matched Sun BMW) and I had them do the install (~$500).

The clutch-based MP LSD is a great LSD for street and typical street-driven car track use. The LSD is built for BMW by probably the best clutch-type LSD builder in the world.

If you want deeper gearing and/or a different LSD type, then you'll have to have one built by one of the few LSD builders. You'll often pay dearly for it though as most spend in excess of $3,000 to have one built to their specs by the typical LSD builders.

If you have increased the boost, deeper gearing really isn't necessary as the additional low and mid-range power makes up for the lack of gearing torque multiplication.

Yep I'm loving my factory gearing. I'll check out an mperformance diff. I wonder how the helical or metal plate mfactory Ltd slips are for 1g? Wonder what the book calls for to install one of them? Could be even less than an mperformance diff?

[52172]

Originally Posted by Daftasabrush

M Performance, love it.

I'll elaborate on that actually, I love it in my 340i MPPSK.

I had a 420D (your 428D) as a loaner for a few days and even that would have really benefited from a LSD.

Have RWD, get LSD IMO.

Agree 100% it's just bs bmw didn't put one in the f30's.

[harkes]

Quaife is also an option. I made some videos about my first impressions and comparison with the BMW E-diff. Unless you are VERY serious about track times or drifting I don't think a diff is worth the money over the E-diff.

[52172]

Ediff? Mine has an electronic traction control that is nothing even close to a Ltd slip?

[upsidedownfunnel]

I believe he's referring to the ADB, Active Differential Brake. It's just a brake based torque vectoring system. It's good enough to lay two strips of rubber on the ground, but it doesn't feel anything like a real LSD.

[Daftasabrush]

Originally Posted by upsidedownfunnel

I believe he's referring to the ADB, Active Differential Brake. It's just a brake based torque vectoring system. It's good enough to lay two strips of rubber on the ground, but it doesn't feel anything like a real LSD.

It is in no way a replacement for a LSD, once you've driven both on a daily basis, most people will realise the two are not comparable. Pulling out of junctions with gravel on the road in the 420D *WITH* the 'ediff' enabled was still a messy affair with just one wheel spinning whereas with a real diff, it just went.

[kern417]

Isn't the MPerformance LSD an "E-Diff" but with real LSD operation i.e. the clutches are electronically controlled rather than mechanical like Quaife? I think I'd prefer one that is mechanically operated vs one that's trying to sense slip and move power around via computer programming.

[enjoythemusic]

M LSD.... $2k plus install.

[52172]

Originally Posted by enjoythemusic

M LSD.... $2k plus install.

That's my price cap. I would like to know how much labor to install a wavetrac or one of the 1k dollar Ltd slips from ecs?

[insanecoder]

Originally Posted by kern417

Isn't the MPerformance LSD an "E-Diff" but with real LSD operation i.e. the clutches are electronically controlled rather than mechanical like Quaife? I think I'd prefer one that is mechanically operated vs one that's trying to sense slip and move power around via computer programming.

for the G20 maybe but not for the F30

[kern417]

Originally Posted by insanecoder

for the G20 maybe but not for the F30

Yeah you're right. I found some more technical documentation detailing how it works. I don't know where I saw that previously. Maybe on the F80?

Edit: Yep, this is what I am talking about. It's actuated by an electric motor that adjusts engagement based on sensor feedback.
https://f80.bimmerpost.com/forums/sh....php?t=1018024

[insanecoder]

Originally Posted by kern417

Yeah you're right. I found some more technical documentation detailing how it works. I don't know where I saw that previously. Maybe on the F80?

Edit: Yep, this is what I am talking about. It's actuated by an electric motor that adjusts engagement based on sensor feedback.
https://f80.bimmerpost.com/forums/sh....php?t=1018024

Hey thanks for the link! Good info there

I believe the active M diff is coming to the G20 at least in the M340i
they need it to be able to tout the G lineup as a driver's car capable of going up against ATS and Giulia et al.
the rest of the lineup will likely lack the LSD and be the mushy ole cars we complain about

[aps]

Originally Posted by harkes

Quaife is also an option. I made some videos about my first impressions and comparison with the BMW E-diff. Unless you are VERY serious about track times or drifting I don't think a diff is worth the money over the E-diff.

That drifting video with the Quaife!!!

[enjoythemusic]

Originally Posted by 52172

That's my price cap. I would like to know how much labor to install a wavetrac or one of the 1k dollar Ltd slips from ecs?

$500 as i recall. There is a specialized tool or two to install it, so check with indy if you plan go with ANY LSD by any manufacture.

[enjoythemusic]

Originally Posted by harkes

Quaife is also an option. I made some videos about my first impressions and comparison with the BMW E-diff. Unless you are VERY serious about track times or drifting I don't think a diff is worth the money over the E-diff.]

Thanks for HUGE effort, yet don't have Ediff here as she came with an open diff of course. Also, IMHO you'd really need a pro driver on a road course track who can provide feedback and timing of LSD performance. This is why development drivers are so key within the racing industry.

Again, HUGE thanks for your video efforts.

[52172]

Originally Posted by enjoythemusic

$500 as i recall. There is a specialized tool or two to install it, so check with indy if you plan go with ANY LSD by any manufacture.

Indy ?

[enjoythemusic]

Originally Posted by 52172

Indy ?

Indie... Indy... independent.

Darn typos