Originally Posted by
Karl Lazlo
Same. Did AKG 95A diff and subframe, and FCABs on a recent refresh of my 03 ZSP. Deciding factor for me was that while the PF FCABs lasted longer than the OE, they ate themselves in a shorter dwell time (~60k) than what I had hoped. Overall, I am very happy with how the car tracks and responds to throttle adjustments.
The added bits I have installed: RE RTABs, RE strut brace, RE RSMs, M3 rear control arm bushings, M3 motor and trans mounts, OE F upper strut mount with plates, PF sway bar bushings, OE end links, Bilstein HD with stock (sport) springs. All on ET35 18x8.5 shod with Mich PSS 255 section width squared.
No noise from the suspension, but may be a little "harsh" for some people, but I have commuted to NYC with this car plenty of times, doesn't bother me... It does tramline more than my ZHP that has a more "tame" suspension and staggered wheels/tire. But, I attribute the tram-lining of the ZSP to the square setup, slightly wider track and stiffer sidewalls of the PSS compared to the softer Connie ECDWs on the ZHP.
Did the poly diff bushings tighten up the drive line slop you get when shifting hard?
Dinan CAI &Throttle body, ESS Tuning TS2, Bimmerbrakes gen3 headers, UUC SSK & DSSR. Achilles oil pump, VAC oil pan baffle
M3 Motor mounts, UUC Trans mounts, Modified clutch style LSD 3.15, TMS front subframe reinforcement, Koni Yellow sports,
H&R sport springs, UUC sway bars, BMW Perf. Rotors, UUC SS brake lines, Hawk HPS pads, CSL replica wheels,
Rotora strut bar, FXR HID conversion, M3 Mirror conversion, BSW stage 1 speakers