Stock can mod?

I know this is an old topic but just wanted to add something. I'm looking to add the akropovic titanium link pipe and can but it costs a bit so needed ideas to increase sound on oem can and came across this topic. I have kept the servo valve open with no drilling or wiring needed. I've just finished but am losing the light so will post photos tomorrow. I'm very pleased with it and the sound until I change the link pipe. When of course the servo motor will be removed completely.