Not just another exhaust?
I just got done "fabricating" a stock 400ex exhaust slip on onto a 250x with a cobra head pipe. The cobra broke and it is a P.O.S. so instead of buying a exhaust I was being recourceful and used what I had. It runs and doesnt backfire. It has descent bottom end but falls off on top (I think) but I have a 400 and the 250 is my friends and dont ride it much. So my questions are is this bad? Will it be ok? And what should the jetting be around, I have no idea where to start?
2001 Yellow 400ex
WB R4 full system
Uni air filter
No airbox lid
160 MJ 42 PJ
Tusk handle bars
Tusk Nerfs
MSR Gripper Levers
Black Maier Handguards
Titax 14 tooth front sprocket
Kenda Klaw Rear 20in.
All Balls axle bearings
Front 21" Razr PR on flipped stockers
WB rev box
Custom black plastic a-arm guards
Powder Coated things
ALL IN PIECES 4 WINTER REBUILD!!!