[s-cars] Cam lift questions

[joeamund]

Dave!
I don't have any figures handy on the exh-fumes to back up with, but our cars
are tested every second year with a mandatory exh gas testing. I never had any
other comment from them that "damn its actually better than stock, despite a
lot of horsepower".

I do belive  since most tuners in Germany is using the 7A cam there is a
reason for this, not only power/torque but they also have to pass emissions
with their products. In my book there is no such thing as "even with a cat",
those are mandatory(when properly built) and transform the turbulent flow from
the downpipe to laminar flow after cats, equals less resistance in the rest of
the ex-system. The only "benefit" from taking off the cats are noice and
resistance inside the passenger compartment for those who have a poor
stereo-system.

One thing  that can be a difference on our side is that if the  car is a 95
model it should pass the limits given in the  same year, not  the limits given
for 2002 model cars. Is that the  same in the US?

Best  reg  Joern,MTM RS


>===== Original Message From "Dave Forgie"
<forgied at burnaby.associated-eng.com> =====
>S-gruppees (Joern and Hap):  I am hearing that the 7A exhaust cam is just
about as good as an RS2 exhaust cam with respect to power/torque, etc. but at
considerably less cost than the RS2 cam.  However, the overlap of the 7A
bothers me.  In my old 8V 2L (Audi engine) VW days, I had a  Neuspeed 262
degree cam would not pass an "Air Care" sniffing test, even with a Cat, at
idle.  At highway speed (3000 RPM engine speed on a wheel dynamometer) - no
problem. But at idle - FAIL, try (and pay) again.  My concern would be that
the 7A cam wouldn't pass the sniffer test and it is WAY more complicated to
swap in and out on a AAN (than the 30 min. it took with the 8V 2L) to "fake"
the pass.
>
>Any Been there, passed that test, experiences?
>
>Dave F.