i have a 91 honda crx dx b16a swap it drives alright run rich and backfires at 5000 and if you keap your foot in it vtec ingages and it good sometimes the checkengine light will flash around 7000 and i get off of it because the check egine light flashes it backfires and the main relay clickes. it also clickes when u start it ( more than normal). But if i just drive around town it will do fine just seems to run rich any suggestions ????? thanks