Bit of an update (since this thread is quite E46 M3 specific).
Good news and bad news..
[Good News]
I fitted the Smarttop module today, easy peasy, took around 30 minutes and all plug and play. I got the unit new from a shop selling via ebay for £192 which is a little saving over the normal £250
You can code some features, such as holding the lock/unlock on the key fob to open/close the roof and you can say if you want the windows up when you put the roof up.. but that's about it.. you still have to hold the key fob buttons, and you have to hold the interior buttons as well..
The Smarttop allows:
- One touch open/close roof from keyfob (3 presses of the buttons)
- One touch operation of the roof from inside the car
- One touch all windows up/down from the keyfob (2 presses of the buttons)
- Won't interrupt roof operation if ignition changes state
- Can open/close roof at a programmable max speed (up to 28mph)
- It can also add auto-tilting mirror in reverse if you don't already have it coded, although you can program the exact angle easily
- A few other small features like home lights and auto locks etc (most of this can be coded anyway)
It all worked really well, loving the one touch open/close from the remote, so much handier and reliable than holding the remote button, and since the ignition doesn't interrupt it just works how you expect.. no euro nannying getting in the way!
So that was good.. now the not so good..
[Bad News]
I was pulling out on a roundabout, medium accelerating in 1st, then something happened and initially I couldn't get it out of first. I suspected the clutch had gone, so rev-matched and pulled it out of gear with a lot of effort, however I noticed that it wasn't so much the clutch, that seemed OK, It just takes incredible effort to get it in/out of all gears.. like the linkage has almost seized..
I limped home, and with it sat on the drive, I can select all gears, but as mentioned it takes a hell of a lot of effort to get it in/out of each gear, its the same with engine on of off. The clutch seems fine in that I can select 1st/reverse and it takes up drive as I expect, it's not dragging when 1st is engaged or anything like that, and there are no noises from anywhere when clutch is up/down or in any gear..
I'm not mechanically that great so I've asked over on cutters and will phone the indy tomorrow..
Shame really because this morning after fitting the smarttop, it was such a pleasure to drive with the roof down, the kids love it as well!
I'm just researching possible options, clutches look straight forward, and I notice SMG boxes are rife on ebay, and looking at various conversion threads it might be that the main part of the SMG box will just bolt on to my bellhousing, as that seems to be where all the SMG stuff was anyway.. there are boxes with <50K miles for £500 so if I am correct, it doesn't seem like the end of the world if it's a gearbox, or I may be lucky and it be something trivial!