exaust, what should i do?

[Andrewtrx400ex]

i have a 2004 400ex and i want to do a HMF slip on. should i get the complete exaust or should i keep the stock header and what jet should i do help me please, i just want the best results thanks.

[exrider49]

i went with the meh slip on and rode with stock head pipe and then i got a fmf powerbomb head pipe...bolts rite up and gives beter power and makes ur hmf sound a lil bit deeper which is prtty good seeing how i made mine a shorty took 5 inches off of it and now it really rumbles

[brapbrap13]

full system no dout.

[Bighead1]

Hey exrider49 you got a pic of the shorty?