[russianboyy]

hey guys, i just recently bought the Is-f and i need help deciding on which Cat Back Exhaust system to go with...
i keep looking up diff types on youtube but im still so indecisive...
i looked up:
Royal Exhaust
Borla Axle-Back Exhaust
Joe-Z
SURUGASPEED

if anyone out there owns these exhaust systems and can give me some feed back to which one i should go with that would be greatly appreciated!!
as well as i was wondering if they all add the same more or less hp to the car or are some of the systems give out more hp then others?

 

[russianboyy]

i read some issues with other exhausts such as the borla that it sometimes doesnt fit right when u receive it... and there is a rattling sound when its really hot..? does that ever happened to anyone with the JoeZ? and if ur driving around the city under 2x rpm can u still hear the exhaust..? cuz i remember in my previous rice rocket when i put an exhaust on there it was always so loud driving around to the point where i got annoyed of it and got rid of it

how come joeZ intake is so cheap compared to the K&N intake?
is there a big difference in quality and is it true K&N adds 28hp?