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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > Bilstein B4S and Eibach pro upgrade - done!

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      09-23-2012, 10:23 AM   #23
parapaul's Avatar
United Kingdom

Drives: E91 330d M Sport
Join Date: May 2010
Location: Stoke on Trent

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Originally Posted by doughboy View Post
I'm not entirely sure what 'ZSP' is, I thought that was the US code for their US specific sports models?

AFAIK The US ZSP models are softer spung / damped and probably aligned for slower steering than the EU M sport models, so ZSP might be a downgrade from M sport?
Originally Posted by JonEdwards View Post
ZSP if I understand it is the american version of the "aftermarket" suspension kit - basically the B4S dampers and shorter springs. It's the next step up from M-sport - I think it might be "BMW Performance kit" in the UK or something similar.

The Hunter machine had 3 options: standard, sport and ZSP. Someone else had already mentioned it on this forum but to me it made sense that the ZSP was the sportiest of the options.

Originally Posted by doughboy View Post
You'd have been better asking for M3 settings (E90 if you have a tourer) which really do give an improvement in steering response and turn in.
I did wonder about this, but I don't have any of the M3 parts fitted, I didn't think they'd be able to get it anywhere near without the M3 control arms and wishbones.
Just how many Yorkshire sheep can you fit inside one exhaust?
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      09-27-2012, 12:16 PM   #24
335i E92

Drives: 335i E92 SE
Join Date: Mar 2010
Location: Manchester

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I've already got Eibach Pro Sport springs on my E92 and will be fitting the Blistein B4's next month.

Are we all saying ZSP is 100% the better option for this set up?
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      04-03-2013, 05:22 AM   #25

Drives: E90 330i 2005
Join Date: Mar 2013
Location: Canberra Australia

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Great write up and review. I'm a bit sick of the rolly polly and lack of turn in precision of the 330i se i have. Only had it for 3 weeks an coming from the focus st I really miss the "chuck ability" noting of course the focus has a short wheelbase.

I can't stand a hard ride and can't go too low as Aussie roads are shite.

So I'm tosing up between the Eibach and B4s and the Eichbach FSD combo. And I am praying it wont be scrappage low or kidney busting.

The install cost here is approx $550 USD so I only get one shot at this!
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