Morning guys
So new exhaust is on, 2.5 turbo back to 3" back box. Was initially extremely loud with drone so added a midbox which has solved most of it. Is also de cat for now until next month for monies which I believe would help a bit more with noise

The issue is not overall noise but noise at tick over and 1500 rpm region where it is extremely Boomy. Above that sound is a nice throaty growl and quite quiet

Has anyone any experience with exhaust end tips as currently it is just the stainless pipe and I have read certain designs can help alter noise and this may be enough to dampen the slight drone and excess noise at tick over. I have a feeling the length and diameter of the pipe from the back box may be causing the noise a bit like an organ pipe does

Thanks for any advice