What size Tube or pipe do I need for connecting BHAF to the TURBO Boot?? I've been running it for years without one and just soft clamping it over the lip on the BHAF but now i don't think that such a good idea after my latest turbo compressor wheel issues.

Compressor wheel was pitted and DAMAGED BY WATER as was told to me by ATS. 

Edited August 9, 201510 yr by rburks

I've got a piece of 4" exhaust pipe stuck in the neck of the BHAF. Then just soft clamped to the neck no different.

I tried & failed with a 4" 45* elbow.  I think the issue is the flange on the BHAF is "soft" & compressible.  What is needed is a firm stiffener (like Mike's exhaust pipe) to go inside so the clamp has something to compress against.  The draft (taper) on MY BHAF flange makes it hard to get a good clamp.  

I note the OEM filter box flange has tabs to engage the turbo inlet boot.  Maybe a few screws through the parts would prevent any slip off.    

I've got a piece of 4" exhaust pipe stuck in the neck of the BHAF. Then just soft clamped to the neck no different.

i did the very same thing. Works great.

Mine are just clamped together and i can still take them out as one piece and they stay together. The 4' pipe is a good idea however.

try to put some hair spray on the bhaf lip. it will help the boot to stick to it!  

try to put some hair spray on the bhaf lip. it will help the boot to stick to it!  

Dare I ask, why you have hair spray lying around?

it made a little grippier surface or stickier . Help the boot not to slip.   spray on the lip where the boot connect, connect the boot and tighten the clamp!     Have no problem with mine.

I got a 4" pvc connector and cut it down to about 2" long, it fits in the BHAF and the tube goes over BHAF.