Hey guys i just got my hallman in the mail and i dont know if this is normal. There is a tiny tiny hole in the side of one of the nipples on it. Its a perfect lil hole that looks like its meant to be there but i dont get why you would want boost to leak out of it.....

 

I don't remember that hole but if you can take a good picture of that hole, we can help you out.

 

The little hole needs to be there in order for it to work properly. Just installed the hallman pro in my evo 9 and its in the directions on the cover page in figure one

 

leave the hole , its so it could work

 

The hole is there to bleed off the pressure when the MBC closes after opening.

 

+1

 

+2

 

Thanks a lot guys i installed it today and it looks great! i forgot i had another boost controller so i went n took a look at that one n it had the little hole also! thanks a lot ne way guys! really nice mbc btw!

 

+3