Here is what I have read..
there is a version of the 2.1 waterboxer engine that is rated at 110 hp
and it's for non-catalytic converter markets,
has a 10 to 1 CR and has a special ECU .. and uses Digijet, not the later
Digifant EFI .
and I had a change to buy one those ecu's once and didn't, dang !
I don't think it's at all just about the exhaust system.
and don't know if you have a Cat or not ..but a straight-through pipe there
runs a little more strongly.
there are 'chipped' ecu's I believe.
there are ratio rocker arms ..
there are modern-made versions of the waterboxer engine that you can
get in 2.2, 2.3, 2.4, even 2.5 liters.
Probably big valve heads too.
They've been turbo-charged too.
whatever you can afford, and risk lower longevity or reliability with.
you guys got internet there ? ....just joking .
you can google that stuff until your eyeballs fall out.
Here is one enhanced waterboxer engine I can actual recommend..
and this is the Only one I recommend so far..
Chris Corkin, aka tencentlife on thesamba.com ..
I installed his 'better waterboxer 2.2 with oil cooler' in a Syncro and I
was very impressed.
and I seldom give very high grades on most of what I see.
----- Original Message -----
Sent: Wednesday, September 21, 2011 12:17
Subject: [Syncro_T3_Australia] Exhaust
I have read that in the UK they boasted their 2.1 L motors had
more HP than our Aussie 2.1 because they did not have a Catalytic exhaust? If
this is true can I buy the standard syncro fitting exhaust in Australia today
and expect more power than Im getting from my original exhaust.