Originally posted by Bradness:
Firstly, area is always measured in square something (inches, feet, centimetres, etc.) so saying it flows 59mm is incorrect.

Possibly you meant that an optimized t-body flows equal to an open tube of 59mm in ID.

I've found that using countersunk screws DOES NOT promote good sealing as they tend to force the plate to one or the other side of the casting.


I see myself stating it has a flow area equivalent (not a flow rating or number) to a stated mm size to make all the different pieces directly comparable.

The size of the intake boot is actual inner diameter and the MAF is effective flow area. They are even labeled as such to try and avoid confusion. Obviously the MAF's not 57m...

The only time I stated actual flow numbers was the 330cfm info for the 60mm that is based on the old information generated by KKM and then picked a number lower then that (300cfm) to prove my point.


You need to properly prep the plate for the screws. Very simple really. I've had no trouble with it at all in any of the TB's I've done over the years.

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.