B16A3 intake manifold/trottle body upgrade
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B16A3 intake manifold/trottle body upgrade
I recently upgraded my intake manifold and throttle body to a 65 mm diameter. Parts used, Professional Products. I couldn't pass emissions with this set up. HC was 440 ppm. However, with the stock 60 mm trottle body installed on the PP manifold, I passed at 90 ppm. Any suggestions as to how to incorporate the larger trottle body and still pass emissions?
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