Not familiar with those pipes but I run some very short pipes without baffles and can say that they are VERY loud (cool) but def. not good for performance (not cool). This weekend I went on the annual "CHICAGOLAND STARVED ROCK V-ROD RIDE" and had a chance to ride with alot of Vs and noticed a big dif. in low end power. I normaly ride with air-heads only and I never noticed it. But when riding side by side with many baffled Vs I could tell that I need alot more RPMs to achieve the same results. I don't know if this helps but....no baffles = noticably more sound.... no baffles = noticably less low end power.