Somebody said:
>...I've never put one on a aircooled T4 engine; but, the fit on most
aftermarket
> T1 systems leaves something to be desired.

The $90 or so extractor exhaust I bought from a vendor who advertises on
this list fit quite well.  While it was definitely louder than a stock
exhaust, I would not say it was even close to obnoxious.  I didn't notice
any mileage difference with it, but I did detect more power, maybe like 17
gerbils in the wheel instead of 16.

I wound up taking it off a year and a half later though, because the
muffler, which had a little angle bracket welded on it that wasn't used on
my 82 Vanagon, got a hole in it where a harmonic vibration had shaken that
little bracket until it ripped itself off, leaving a 2" hole.  Then it WAS
loud.

The pipes were still in very good shape, and in retrospect I suppose a patch
of metal could have been welded over the hole, because the muffler, while
rusty, had not rusted through.  I took it off because I discovered
replacement mufflers were not available and my FLmuffler shop wanted nearly
as much as a new system to graft a suitable muffle to it.  While I was
relating the tale to the vendor and inquiring about replacement muffler for
that system, unprompted, they offered me better than normal price on a Dansk
big-can-that-bolts-to-both-heat-exchangers type.  I went for that.

It's WAY quiet.  So quiet I wind up stalling more often pulling away from
stops because I can't hear what the motors doing unless I'm holding my
breath.  I like it.  Time to get cooking on that tach install project.

Carl
82 L