tomscott said:
The car looks nice! here are a few things... :evil:
• Engine strut brace - better handling
• Upgraded springs - Eiback or H&R - reduces the stance and looks much more aggressive as well as removing the problem of broken springs
• ZHP gear knob - weighted and shorter giving more precise shifts
• Tinted windows - suits the coupe
• Stubby arial - also looks much more fitting on the coupe although radio signal can be hampered depending where you are
• Aero Sills - A part of the aero kit that BMW should have added to the car as standard.
• CDV - clutch delay valve - most people have it removed as it reduces the notchyness of 1st-2nd
• Carbon rear lip spoiler - depending on taste - suits the lines of the car - more aesthetic than functional
• Induction Kit - Groupe M or other - gives the induction noise of the M3 CSL which is a much desirable noise, lets the car breath better and adds more power.
• Upgraded exhaust system - to add a better noise more boom and more power etc - I prefer the rasp of the OEM but a lot of people have had them upgraded with good effect.
• Upgraded brake pads - less fade on track days
• Updated Nav firmware adds new functionality like speed cameras etc depending what discs you have (more a non OEM feature depending how you feel about using edited discs, can cause the system to crash be warned)
• 19" wheels?? depending on your preference, again fills the arches better, looks more aggressive but gives a harder ride. most popular being OEM CSLs
• Skid plates - protect the under side of the front bumper
• RPI Ram Air package - air scoop and performance air filter
• Intravee iPod intergration - control your iPod through the Nav system
• Bosche wiper blades - much better than OEM
• An extra base unit - either two under the front seats or a single in the space next to the battery here is an interesting upgrade walk through - http://billswebspace.com/MZ4SubwooferInstallation.htm
Thats about as much as I can think of off hand. A lot obvious, but hopefully a few useful points
Welcome to the world of the Z4M the comunity and the modification addiction!
Coilovers and camber plates would be my suspension upgrades of choice. These with a big brake kit would certainly improve the track performance. Everything else is mainly about aesthetics rather than performance.
For now, I've found DOT 4.1 fluid and EBC yellow stuff pads have transformed the brakes (not that the OEM pads were bad), and I plan to ask an alignment centre to dial in as much negative camber as possible with the OEM set up.
The clutch delay value doesn't specifically improve the notchiness of 1st to 2nd change, which is a recognosed "characteristic" of the gearbox. It's a choke in the clutch hydraulics that moderates the speed at which the clutch engages when the pedal is released. This lessens the severity of clutch engagement making driving easier for those not habitually driving manuals (mainly the US market). The single benefit that I've noticed after CDV removal is that with swift gear changes where rapid clutch disengagement then reengagement are necessary are much smoother (eg full attack upshifts, or when rapidly serially double declutching from high speed to enter a low speed corner). The clutch immediately responds to pedal movement in both directions, instead of just pedal depression (where foot power easily overcomes the choke effect). I doubt the difference is noticable in day to day driving, but it most definitely sharpens things up on the track.
Depending on where you habitually drive, I would recommend the RPI skid plates to protect your fangs. I posted ad nauseam on the greatness of these the other day (search for bumper protection or look at my recent posts). These were amongst the most value for money mod I've made.
As for intakes, I'd quite like this: http://www.ca-int.co.uk/variants-Y2FyX21ha2U9Ym13JmNhcl90eXBlPXo0bSZwYXJlbnRfaWQ9MjgyMw==.html
but I have heard rumours of MAF problems and erratic idle. That said, no one here seems to have had problems. It seems like a cheaper way of increasing induction noise than the Gruppe M, if £340 can be called cheap! If only I could find one second hand...
Lastly, my recently acquired Remus back boxes sound absolutley fantastic, adding bass without drowning out the inherent raspy engine noise or being unduly loud. Also they only exhibit mild drone on the motorway, and this is at at 100mph, so it's easy to run at different RPM to avoid this. I get the impression the RPI race system drones at legal motorway cruising speeds.
Lastly, the day I can find an insurance company that will cover me with one will be the day I fit a supercharger...