Originally posted by 99fordsvt:
The ugly kink in the rear cylinder 180 deg bend on the MSDS Y-pipe was just too much for me to take. So I flowed tested it on a Superflow bench, and modified it.
Flow #'s are cfm at 20" H20.

Configuration---------Base-------- Modified
Front Bank tube-------393----------393
Rear Bank tube--------326----------381
Flow delta (%)--------17%----------3%




I was interested in the stock Y-pipe flow too.

Front Bank tube--------252 cfm
Rear Bank tube---------219 cfm

Wow! Pretty restrictive. I'll try and flow a modified stock Y-pipe. I expect better and more balanced flow, but not as good as the modified MSDS.