Did you make up an X pipe from the downpipes to the cats so that the O2 sensor 'sniffs' all 6 cylinders?

No X-pipe required.

The TurboTechnics kit has a split exhaust header, one for each turbo which results in two down pipes.

The twin pipes run all the way to the rear silencer which accepts the twin two inch pipes.

A true dual exhaust system.

__________________
http://i19.photobucket.com/albums/b1...c/GOWIDE-1.jpg
1971 280SL ROADSTER
1988 300CE TWIN TURBO WIDEBODY
1994 E320 CABRIOLET
1999 C43 AMG
2005 G55K AMG
2008 CLK63 AMG BLACK SERIES

So you just put the O2 boss in one of the pipes?

Found another two, both are 3.0L W201 projects:
http://www.daham.org/16vt/projects/merc_w201/
http://community.190revolution.net/performance-modification/32864-190e-3-0-biturbo.html

__________________
1989 300CE "Project HWA124"
(400rwhp Turbo Technics AMG C36 engine)

Another one, installed by Johann in Iceland:
1992 300CE-24

__________________
1989 300CE "Project HWA124"
(400rwhp Turbo Technics AMG C36 engine)

One for sale in the UK but in LHD:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=330316267008&_trksid=p2759.l1259

I emailed John Pearson about the registry and he is going to attempt to scrape together whatever data he can to help.

__________________
1989 300CE "Project HWA124"
(400rwhp Turbo Technics AMG C36 engine)

Right, well ive just bought a silver 1995 E320-24v which was converted by Turbo Technics themselves back in the day.

Ive also just built a twin turbo 2.6 190E using a new 12v Turbo Technics kit.

And we have got another brand new complete 12v kit all boxed up still awaiting fitment. This kit was the very last 12v kit that Hughes had left.

Thanks! I've added this to the registry. If you want to fill in any of the blanks just post it here.

__________________
1989 300CE "Project HWA124"
(400rwhp Turbo Technics AMG C36 engine)

Sorry, should have said, the 2.6 190E that I did was a 1992 and is Silver

After more than a year of being garaged in Melbourne, my car is now on a boat for Canada, due to arrive in October.

__________________
1989 300CE "Project HWA124"
(400rwhp Turbo Technics AMG C36 engine)

so its still yours and not sold, thats gr8 news, you got to take some vids for us man.
Drive safe.

__________________
Jay,
-----------------
-1995 Blue W202 C36 AMG (M) SOLD ;(
-1995 Black W140 S500 (Lady)
-1992 Black W124 E300 (Dima) (Ex-Mosselman
Twin turbo Kit).
-1988 Black W124 300 E 4-Matic.(Nadeen)
-1983 Brown W126 500SEL.(Old Lady)(Sold)
-1981 Gold W123 280CE.(Dareen)(Sold)
http://www.youtube.com/user/jayrasheed

So your missed you baby. Are you excited? What's the girlfriend going to say when she see's her replacement????????

LOL, actually she supported the idea of bringing it over rather than dumping it on ebay.
Looking forward to finishing the engine work and getting some cold Canadian air into the turbos! I'll be sure to make some more vids, Jay

__________________
1989 300CE "Project HWA124"
(400rwhp Turbo Technics AMG C36 engine)

Women come and go....cars are forever....

__________________
http://i19.photobucket.com/albums/b1...c/GOWIDE-1.jpg
1971 280SL ROADSTER
1988 300CE TWIN TURBO WIDEBODY
1994 E320 CABRIOLET
1999 C43 AMG
2005 G55K AMG
2008 CLK63 AMG BLACK SERIES

3.0 24v kit on eBay:
Link

Listed at twice what they paid for it but I'm sure a lower offer will take it as it's still good value. No exhaust system to be seen in the pics though.

__________________
1989 300CE "Project HWA124"
(400rwhp Turbo Technics AMG C36 engine)