I tried to do a poll on this but I couldn't figure out how to post it. Maybe you guys could just leave me some comments. I'm about to order a $1,400 ceramic coated Alien Head with o2 bung welded into header. I'd love the loud sound and the peak hp. I do plan to drag race some day - maybe this year. I am considering NOS for the bike some day, maybe. I would like to come close to what I would have going with slipons in bottom end performance for street riding though.
Please try to tell me what i can expect going with an A-head when I am riding from idle - 4K. Perhaps expressing the reduction in acceleration by a percentage (if you feel that is the case) would be best way to convey the effect of a 4-2-1 system.
Comments comparing partial throttle with a 4-2-1 to partial throttle with slipons would be helpful also. <<In other words, do you need to open the throttle a lot to get the performance from a 4-2-1?