Stock Exhaust Question

[franciscoluis]

I will make the mods to the stock muffler http://home.earthlink.net/~gellett/exhaust/
and grid the stock pipe. i want to know if its ok, because i have heard that the motor need some back presure from the exhaust system.
Please give me your advice
Thank you

Francisco

[UglyMotha™]

no that mod is fine there will still be more than enough back pressure actually you probably won't notice too much of a increase but possibly some

[franciscoluis]

Thanks a lot:D