I presume Ron has Tam's bifurcated pipes on his Euro's. I have one on my 39 lb wet Eurosport and it takes all of a P-180 to get it off the grass in 350-400 ft. My UB jumps off in about 200 ft.

That short run to the bifurcation must produce lots of turbulence there and subsequent loss of thrust. I burned a hole in my first pipe at the bifurcation after about 20 flights.

Both of my P-180's are in different planes right now, so I can can't fish scale my Euro, but I would guess at least a 10 lb loss vs a proper size and contoured straight pipe, although, I agree with Ron, the twin pipes look and sound much cooler.