back box inlet

[boyracergt]

just wondering whats size is a 1.0l backbox inlet?
cheers

 

[ollyc98]

38mmOD

 

[boyracergt]

i have a backbox with a 3" inlet wheres the best place to get an adapter?

 

[ollyc98]

That's quite a big stepdown, most only go to 2.5 inch, might need to be custom made