jetting

[sorta2]

I just put on an HMF slip on pipe and it came with a 155 jet, I thought I remembered reading somewhere that a 165 would be the one I needed but now I can't remember. Just woundering if the 165 would be too much, besides the pipe it's a stock 03 400ex.

[CarGuy7a]

i would say put the one that came with it in.