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      02-19-2020, 03:13 PM   #1
thataverageguymike
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Drives: 2009 E82 128i
Join Date: May 2018
Location: Dallas, TX

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Suspension - where to start?

This weekend I went to my first autocross of the season in my mostly stock 128i - most notably I'm on OEM non-sport suspension. I've had some suspension mods in mind for awhile but am now looking seriously at going forward with some of them to improve the handling and autocross times. This isn't a track focused car but I definitely want to take it to autocross and HPDEs. Which one of these should I attack first, or would give me the biggest bang for my buck?
  • Bilstein Pro-Kit (Bilstein B12 struts and Eibach lowering springs)
  • 1M/M3 control arm and bushing kit (front and rear)
  • 1M/M3 rear subframe bushings
  • Addition of a rear sway bar (non M-sport 128 does not have one)

Current mods:
  • StageFP N51 tune w/ 3-stage intake manifold option
  • OEM Euro airbox
  • Silicone intake boot
  • 18" wheels, 8.5 front 9.5 rear wrapped in Pilot Sport 4S 225 front 255 rear
  • Muffler delete

Thanks in advance!