The vtec cams in the first gen b16a1 were the mildest vtec cams Honda ever made. They generally are not as loud as the new sis and gsrs. Take your cat off and drive around w/ an open header if you cant hear anything then it definitely is not working properly (anyone who has drove around in vtec w/ open header knows what Im talking about). If it is not working properly check wiring and clear codes.
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Don't bother giving me "rep", I won't return it and I think it is stupid.
Gracie Barra Clearwater
Gyms in Clearwater, St. Pete and Port Richey
pm me if you are interested in trying a free class at any of the gyms.