Swapped out the stock angle plug head today for the Pedalchopper head with NO OTHER changes. INSTANT increase in power! Went from lagging out on top yesterday to pulling all the way through top gear today! Even with the restrictive exhaust this head made a clear and noticeable difference in power on my chopper engine! Sounds quieter and less crappy as well! If I had to guess, I'd say the Pedalchopper Hipo head made my bone stock engine feel crisper, sound better and pull harder! Highly recommended! Looks like another winner from Pedalchopper!
Lowell R / Memphis