Ktm 390 adventure muffler modification for more noise!! Sewing machine to super sport 😂😂

[@Begotts]

Hello…I did this same thing but I also took out all the insulation and drilled another hole right under the main one. About 1 1/4” hole saw to make it. Cleaned it up and a little flat spray paint and it sounds great mate! Good work! Ride safe.

[@sdefiel3719]

I've seen a guy use a doorknob drill bit. No rivet work needed. This _does_ sound better. Give us a bit of a rev bomb next time though.
thanks,
S

[@utkuk6942]

How did this application effect the fuel consumption, was is increase or no change, have you ever tested?

[@rajivmenonn]

Is there any air leak. Did you apply any heat glue

[@shervinfranciscotalebi8010]

When you're driving on the road, does the sound stun you?

[@richardburdyn9369]

So….was that the spark arrestor that you cut off?

[@tomg6284]

About december I cut the small pipe out on my end cap. It is free and sound better too.

[@PedroMurilloChaves]

Do you believe that if you additionally eliminate the resonator it would also increase the exhaust sound too much?

[@Im_Perseus]

Kindly don't do that, i tried and it sounded very bad.

[@tsugha]

tho bike will run lean af now

[@dlpsr2361]

With performance muffler and with or without resonator it will not run lean as KTM recommends Akro slip-ons in powerparts