agree what honda dna said.... vtec different... for maximun hp vtec b series should go for 4-1 instead of 4-2-1. Amoil motorsports had proven in dyno chart... when drag did low end torque really needed if the dragger launch at 4-5k rpm above? for all other cars outside which deliver full hp at lower range of rpm should go for 4-2-1, like wira, satria, gti or others, btw i am using 4-2-1 in my ek before low and mid range nice.. but lost power in high... so i change to 4-1, low end not as good as 4-2-1 but mid and high range rpm it do increase torque and hp.
i got another car which is gti. it using 4-1...y? because i got 288 cams in it so it help to produce more hp at higher range of rpm.
