[satan]

from one of our fellow riders, i found out that u lose some power from ur exhaust valve when u put on aftermarket exhaust since its not there anymore.i want to know from u guys if u notice loss of power after ur aftermarket exhaust u put on under 6000 rpms.i didnt even relize it till i was told that it would happen.

 

[stryder420]

if you didnt realize it before you were told that, maybe its not there...

 

[SER1]

get a powercommander. you'll get back that low end and will have smoother throttle response.

 

[fclark]

maybe i'm wrong but when i put my akra on it seemed faster to me. Maybe not much but on roll ons i noticed that my speeds were always higher. It seems like i get up to speed quicker. I don't have a full exhaust though so i thought it might just be from getting ride of the weight of the stock exhaust. I have an 06.

 

[S4one]

You do lose low end power/torque because there is no back pressure other than the cats.

 

[SER1]

the stock exhaust has an exhaust valve that opens and closes with the RPMs. It gives back pressure and quites the exhaust decibles but it closes off at 13k which is why some on the folks on the forum have done the jumper mod.