Anyone had an experence with Hacker or Thunderheader Pipes. Thunderheader seem to be popular in the states.

Thunderheader performs well, but think bit too loud, guy i know had one & was happy with performance but as he was a very hard ridder it was too loud so took it off. to me they look like the pipe my old shovel lowrider came with.

I had t,headers on my evo softail,motor has revvy cam and hd valve springs,hi comp pistons,80ci,thunder headers made the old girl really lift her skirts, particually in the middle to higher rev range, best pipes I used, BUT really very loud and augly, very good pipe to make power, just way too loud for OZ laws.

Cool thanks for your thoughts.