Hey, u have a 2014 is250 and have put on a INVIDIA q300 axle back and midpipe. It was a decent sound when I first put it in but am wanting more sound from her on idle,etc as I feel it has quieted down. What more can I do? I can’t put headers or anything more but I can modify my current setup. I was thinking of maybe removing the mufflers off of the q300 but needed some advice before I tried looking for an exhaust shop. Any tips?

 

You have a few options here.
Try getting a different axleback- I have an FSport axleback with my Invidia midpipe and I like it personally. Apexi's design looks like it'd be louder than the Q300 as well.
Get something like a Tsudo and you have what would be the loudest sound short of getting headers. Will probably get drone though.
I wouldn't cut up your Q300 axleback when you could just sell it.