Louder sound muffler: options

[Rooster]

Hi, i need louder sound ktm 390 adv. it has 2 cats (catalytic converter and pre-muffler ). I bought from ktm powerparts akrapovic but it doesnt work - same sound compare with stock muffler.

1. Coober kit
COOBER 390 Adventure De-Cat KIT
https://www.coober.eu/product/coober-390-adventure-de-cat-kit/
its nice tune but pre-muffler is there so sound will be deadening.

2. Verex only pre-muffler delete
https://verex.com.au/wp-content/uploads/2020/11/390_MufflerDelete_Installed-2-scaled.jpeg
and i have to buy powertronic with their costum tune. i dont know if it is compatible

3. Verex Full Decat Pipe
https://verex.com.au/wp-content/uploads/2020/11/390_FullDecat_Installed-3-scaled.jpeg
BUT how should combustion work, without any back pressure?
Probably i have to buy powercommander and get dyno tune for my local motoservice dealer

pls any idea? i was hitted by car on traffic (wasnt my false) thats why i need loud sound

thank you

 

[Karfanatik]

Really you just need to get a decat. A slip on is alright but its mainly for looks. A decat will make much more of a difference but youd need to get a fuel controller of some sort. For the RC390, I bought the Leovince decat pipe and a pcv among other things. Works like a charm