hmf

[cheesy350]

i just put my hmf slip on my 2003 300ex, it seems to be running alright a lil back fireing. i was wandering if it wud be alright if i went riding with it with out rejeting for 1 day. is this gonna hurt my engine?

[RuffRyder400ex]

i dont think it will.

[400ex#18]

it isn't good for it, but you should rejet
it won't take long to do it, and it will run and sound better! i had the same problem