Got a 440i gc w dual res delete. Just got mhd aswell and want to start pushing some power. I do prefer the sound of catted with the deeper tones compared to the loud raspy catless. However i also like that i can shoot gunshots with catless without worrying abt blowing cats, cause there are none. The smell is manageable sometimes… prices are completely different, catless is abt $300 cheaper. just want to know if i do go catted, am i safe to run soft or medium burbles or just not burbles at all. Is one more worth it than the other? I do want to push power but nothing excessive, still want the car for longevity. Ive also heard burbles are not good for the turbo( any truth to this?)
Burbles/pops/bangs can be tuned in and out. Don’t base your decision on having to live with or without them. Mine has them in sport mode, and none in Eco mode.
Many BMWs burble and pop from the factory depending on trim/options. They wouldn’t offer that if it meant they would be replacing cats and turbos under warranty.
Catless smells. Whether it smells good or bad is subjective. I don’t mind the smell. I grew up around ATVs and quite enjoy the smell of engines/gasoline.