300ex rejeting

[fasterz]

hey my buddy has a 300ex and hes not to sure wat to rejet to. he just put on a procircut t4 muffler wit a white bros header. so just please tell me wat he has to change and wat to change it too. thanks

[fasterz]

c'mon people

[Atreyu]

i dont know it off the top of my head but you can check dirtwheelsmag.com and do a search on 300ex pipes, i remember seing jetting stuff in one of them. or just check procircuit's web site. btw, your special you get my 400th post:blah