i recently installed the Injen 3" Downpipe and Invidia o2 Housing on my 06 Evo MR and i just read on lancershop.com that the downpipe has an integrated donut gasket that mates with the male end of the o2 housing. does that mean i dont need to use the donut gasket that comes with the o2 housing?

 

Hey Greets... Did you end up mounting the downpipe without the gasket??? i did it and my downpipe is vibrating very badly.... give me an update.. i have the invidia o2 on the Injen 3'' dp...