Yes I did mod my Y pipe. I basically removed any restriction that there was in the Y pipe. I wrote up a step by step on how I did it but I have not seen it show up in the how to section yet. If you want I can Email my step by step. If your handy with a welder its not to bad to do if you know ahead of time what your in for. I didn't. But now after I've done it once I wouldn't hesitate to do it again.
Regard,
DaveNC
