View Full Version : quick question
01boneless
09-20-2011, 07:40 PM
this is a dumb question but im gonna do the header mod and was wondering if id have to go up on any jets or can i just go out a half a turn on the a/f screw
honda400ex2003
09-20-2011, 08:09 PM
imo you might have to go up 1 size but it would depend on how much material you take off and how close to being lean you are currently.
give it a couple of runs with some chops and see how it looks then go from there to make your decision on going up or not.
just my .02 though,
steve
01boneless
09-20-2011, 08:20 PM
well its border line lean now ( just pops very little on decel) so i better not do it and just turn a 1/4 out to do away with the poping cause i doubt the header mod does anything lol thanks steve
honda400ex2003
09-20-2011, 08:24 PM
do a comparison based on what you find. i did my header when i did my 416 so i just did all the jetting at the same time.
steve
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