What Mods to do to a 4 stroke?

[wr250f95]

point is, loud sucks, and the stock systems found on most mx series bikes are pretty good anyway, so why not invest in engine or intake mods, increasing power while keeping the noise the same.
on a 2stroke pipes worked by altering back pressure, no such thing on 4s.

[tigmaster]

uh.... this is not true. 4 stroke pipes take into account almost the same amount of flow dynamics calculations. the way the pressure and flow work together is just as important in a 4 stroke. mega/power bomb anyone? im not going to argue anymore, point is an exhaust system is very very important. it is a very considerable hp gain compared to most mods and you can still keep it quiet and gain power.

[wr250f95]

fine, but remeber bob.

[tigmaster]

i will. dont you fret, i will.

[wr250f95]

lol..............................

[tigmaster]

i have a loud pipe but its not too bad.

[wr250f95]

Im just saying that there are better mods than a pipe in my mind, you never know when some tree hugger is going to be out walking his poodle.

[tigmaster]

right but if someone is looking for a noticeable hp gain on a stock bike. i am always always always going to suggest a full exhaust system and an air filter.

[wr250f95]

do you know what db's? mines like 92

[tigmaster]

ya, i will look it up no. its the yoshi full tri-oval system with no silencer or spark arrestor. i didnt take them out, i just didnt get them with the bike. the system retails for like $850 so i couldnt argue.