Just got a yoshi tri-oval slip-on for my '05 f4i. Went to install this weekend and the header pipe and the slip-on had the same diameter pipe. Is there a sleeve that should be used and just wasn't included? Everything about the pipe looks right. Did they just send me the wrong one?

 

when i put on my scorpion i noticed that i had to cut off the exhaust gasket that the original midpipe had on it so the new pipe could slip on

 

I had to cut off my gasket to put my D&D on too.

 

Cut off the gasket last night. Went on no problem. Sounds real nice!!!