changing pipes??

[john.E.business]

if you change aftermarket exhaust do you have to re-jet? do different pipes call for different jetting?

[cals400ex]

they will all vary some but you will never know the differences unless you have an air fuel meter.

[john.E.business]

Oh yea so if i where to change pipes the difference would most likely be so minimal if any that it wouldnt need to be?

[450rrider69]

if u got a slip on and ur gonna put a full system on yea u got to. they are diff headers which means its gonn give out more air i think, the only real way to tell is just check the plug. if it looks good then dont worry about it...

[john.E.business]

this would be full system swapping

[04'400ex'er]

more than likely, no. But what pipes are you changing from and to??? Just pull the plug after you get the new pipe on and if it is paper sack brown then it is good to go. otherwise, jet accordingly.

[john.E.business]

mmm k well i was thinking about swapping my yosh for a nmotion...

[bwilson624]

Did you re jet after you put your yosh on? If so, the same ones would probably work. When you order the NMotion, just ask what size jets they recommend.