CS Modification thread

Discussion in 'F80 M3 Saloon / F82 M4 Coupe / F83 M4 Convertible (2014-present)' started by Poon, Feb 13, 2020.

  1. 13 Feb 2020 at 5:23 PM #1
    Poon

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    Right then.

    New thread for discussions ONLY about modifications for the CS variants of M3 and M4.

    Please keep all unrelated and mindless banter on the other thread.

    Things I am interested in knowing are as follows:

    Exhaust - Does the OEM M Performance exhaust fit. BMW don’t seem to list it for the CS.

    Spacers - What have people fitted?

    Suspension Lowering - I assume it just has CP suspension with software tweaks. What are people using to lower? MP HAS? MSS?
     
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  2. 13 Feb 2020 at 8:36 PM #2
    Henry 145

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    MPE fits think Scott had this one first one and also the HAS kit
     
  3. 13 Feb 2020 at 10:12 PM #3
    rchamps81

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    Re suspension, I was reading some of the posts on Bimmerpost and there doesn’t appear to be any hardware specific to the CS. The spring and sway bar combination appears to have been tweaked along with updated EDC software.

    Having had my car for all of about two weeks, I’m seriously considering lowering and spacers. The stance just isn’t right. I know it may mess up the factory settings, but any tweaks probably aren’t going to ruin the car and I very much doubt I’ll notice in my day to day driving and 2/3 track days a year.

    Considering everything from HAS to Eibachs to Coilovers. I suspect I’ll start with Eibachs and 10mm spacers as they looked good on my old M4.

    [​IMG]
     
  4. 13 Feb 2020 at 10:38 PM #4
    Poon

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    @Evolve Imran any views on MSS for a CS?
     
  5. 14 Feb 2020 at 12:24 PM #5
    Evolve

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    Same kit as the non CS M3/M4. We have loaded the CS EDC SW into our F80 M3 CP and it works very well with the MSS.
     
  6. 14 Feb 2020 at 5:51 PM #6
    C1CDG

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    FWIW mate I think the M4CS sits perfectly. It’s the first car since I passed my test 18 years ago that I have left at standard height.

    I think the wheels help, cause whenever I see an M4 on 666M all I can think is it needs lowered, but I’ve seen lowered CS’s and think it looks odd with the 19”/20” combo
     
  7. 14 Feb 2020 at 6:46 PM #7
    Henry 145

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    when I was at Silverstone my car was getting abuse for the gap in the arches - does not bother me but no doubt will lower at some stage as we all have to waste money on mods!
     
  8. 14 Feb 2020 at 6:53 PM #8
    C1CDG

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    I’d have the AC Schnitzer RS Coilovers but get them to fit and set it up too.
    It’s hard to justify £3k though.
     
  9. 14 Feb 2020 at 7:02 PM #9
    Poon

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    I reckon MSS of MP HAS for ride height. Would worry about front splitter though.

    I agree though H the gap is too big
     
  10. 14 Feb 2020 at 7:18 PM #10
    Henry 145

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    true all it needs is a little drop - handling is spot on - have you taken yours on track yet?
     
  11. 14 Feb 2020 at 11:32 PM #11
    Poon

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    No, sold my Manthey GT3 as not doing anymore TD’s after seeing some Radicals racing and taking out a friends E92 GTS.

    Using the cash to build a golf simulator and gym at home.
     
  12. 15 Feb 2020 at 4:36 AM #12
    Telsy

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    MPHAS or any lowering kit set to BMW recommended height should help preserve the front splitter. I had my MPHAS and now my Intrax set to BMW height; maybe 2mm higher up front on the Intrax due to my revised spring, and with a little care, clearance is fine. The MPHAS did not significantly adversely impact NVH, but the Intrax is quite noticeable as a daily, but is liveable when set to softer damping. Both improve feel and compliance over undulations, but that’s from stock comp pack settings, not running CS software, but 763M wheels. In all cases, ride and handling are better with 437M wheels.
     
  13. 15 Feb 2020 at 6:55 AM #13
    Roberts

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    For what it’s worth, I have a non CS/CP on 19s with KW HAS wound pretty much down as low as it can go and very rarely do I scrape the underside of my splitter.

    If I were doing it all again I would consider the MSS kit.
     
  14. 15 Feb 2020 at 7:39 AM #14
    Henry 145

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    tony’s?
     
  15. 15 Feb 2020 at 11:05 AM #15
    ScottBacon

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    I’ve put 10mm spacers on my M4CS. It helps the aesthetics of ride height without actually changing the springs because you push the tyres out. Worth doing before considering changing any suspension components

    Re MPE, yes it fits perfectly well jus the same as any other F8x. CS is no different in that regard.

    Rather than buy the MPE, just buy my used Akra Evo system which has covered less than 1000 miles :lolwsign:
     
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  16. 15 Feb 2020 at 12:01 PM #16
    Poon

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    cheers Scott will try the spacers first.

    Akra would be nice but as said before trying to keep my warranty in tact.
     
  17. 15 Feb 2020 at 12:01 PM #17
    Poon

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    you still selling your CS?
     
  18. 15 Feb 2020 at 10:20 PM #18
    ScottBacon

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    Yes mate - open to offers
     
  19. 15 Feb 2020 at 10:35 PM #19
    rchamps81

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    So, considering that we have grey wheels, do we go with black or silver spacers? Just put an order in for black and am thinking again now whether silver might be the better choice...
     
  20. 16 Feb 2020 at 4:22 AM #20
    Telsy

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    You won’t really notice either particularly, but black would have been my choice.
     

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