Originally Posted by moisesing

I recently got a Virtus .21 offroad engine and today I finished the first part of the break in, but before I take it to the track can anyone recomend me a pipe and header for this engine.
My local track is a medium/small track and it is a fast track so run time is key to success.
Also if I am not mistaken it is also advise to remove one of head shims once break in is done.
Thanks for all the help.