i just got my b20 vtec dyno tuned and was wondering how big of a difference running open header would make. i have a press bent 2 1/4 exhaust. how much do you guys think i will gain by running ope header. i wanted to get it tuned open hader but my bung was 1 inch away from the end of the header.
i dynoed at 190WHP and the dyno has low readings(10-15% lower)....i forgot the name of the dyno.
i dynoed at 190WHP and the dyno has low readings(10-15% lower)....i forgot the name of the dyno.