anyone know? I'd like to know also

 

pretty dang loud, I was jumping with some guy on a 400ex with a curtis sparks pipe its gotta be pushin past 101db's

 

dont loud pipes usually mean more power? I heard that 400ex are better with lss backpressure. what exhaust is loudest and gives most power gain? also LTZlightning, did the sparks pipe sound good?

 

HMF HANDS DOWN!!![img]i/expressions/face-icon-small-smile.gif[/img]

 

HMF full or Sparks full (X-6)

 

does anyone know were i can get a pro circuit graphic kit for my 400ex?

 

How bout the yoshi.. How good is it??

 

my yoshi complete is loud(too loud 4 me)...cant run it in my culdesac cause all the neighbors are like wtf...

it is also very strong in torque and horsepower...it takes concentration to keep wheels down in 1st three gears... very impressive

i recommend this system and i paid $399 for complete online, very impressed(but still too loud) I feel the exhaust pressure 20 feet behind exhaust(powerful)

sounds like a flowmaster on a V-8

happy shopping

 

i think hes right there both good pipes alittle loud but youll be happy

 

My WhiteBrothers R4 is great it is a little loud but that is good they can here me on the other side of the bowl. The power output is great price is reasonable but I here they are not producing the R4 anymore the replaced it with thar over priced E2 almost 400 just for slip on That is rediculious.