[mmmmgood79]

I recently bought a 1975 914 2.0. I followed the guidelines set out on this website for buying it, but apparently I missed one or two steps. The car runs excellent and the engine has good compression, however I cannot get it to pass Oregon DEQ. I know there are forums on this site that delve into that and I have tried many of the tips and tricks to pass with no success. It is at the mechanic right now for one last shot. I finally passed the HC test by removing the vacuum advance, which I thought the 1975 did not have. I now believe that the car has the older FI (D-jet). I almost passed the CO by turning the screw on the brain all the way CCW, but I was at 5.4% and am supposed to be at 2.5 (My first test had me at 9.5% co). Alas, I decided that I would just shell pout the money for a catalytic converter, yet in my research I realized that my car has pre 1975 heat exchangers, and no after market muffler /catalytic converter combination has the trapezoidal connections that those exchangers come with. No matter where I look, I cannot find 1975-1976 heat exchangers with the triangular pattern, is there a reason for this? Any help on any of this would be very grateful. Thanks.