Well, my car has had quite an adventure over the last week.
The car was running crappy at higher RPMs under load. Based on all the info that's out there, it was reasonable to assume the DISA and/or VANOS were to blame. I was intrigued with the "DISA Gold" upgrade option, and a rebuilt Dr Vanos unit only runs $250, so I figured I'd do them both as preventative maintenance at the very least, and would hopefully solve my stumbly issue in the process. I dropped the car off with my mechanic a week ago today, along with a set of OEM Sachs shocks & struts, for a full suspension refresh, including bushings at both ends and shock mounts, OEM parts to be supplied by the shop. I got a call last Wednesday afternoon - the "new" VANOS unit was throwing codes on both intake and exhaust sides, and the car wouldn't rev for shiite. It took a day to get the good doctor to talk to my mechanic, and after that conversation, he concluded that the unit was indeed bad, and agreed to send a replacement. That was Thursday. The replacement didn't arrive until TODAY (thanks a lot, Doc). My mechanic (Babbitt Motor Werks in Mesa, GREAT guys) cut me a sweet deal on the labor, despite having to do the VANOS twice. All is well now, and the car probably runs better than the day it rolled off the line.
Since purchasing in May with 53k miles, I've now done the following:
Inspection II
new A- and C-pillars
set of Michelin Pilot Super Sports (can't say enough about these tires - best I've ever driven on, by far)
new ZHP shift knob
full 3-step detail by the local "master", including interior & engine compartment
added a set of Cocomats
full suspension refresh & (of course) alignment
VANOS swap for rebuilt unit
DISA Gold
replacement Ebay stock head unit to replace original with knackered volume knob
Next up:
USASpec iPod adapter
cooling system refresh at some point
The car looks and drives FANTASTIC now. I feel so fortunate to have found the "right" car very quickly, that met all of my desired criteria when I began searching a few months ago. I found this one in Miami, and the distance would normally have kept me from pursuing it, but my best pal lives nearby, is a former stealership mechanic, and did a VERY detailed pre-purchase inspection and photoshoot for me, as well as hung onto it as I arranged transportation to Arizona. It's the perfect companion to my M Coupe, and it's awesome to switch off between the two, since they both have their own outstanding (but very different) virtues.
