I have the muffler delete on my e92. It drones pretty good from 1500 to 2200 RPM, especially uphill on freeway. but i cannot count how many people pull up next to me and ask what i have under the hood and say that it sounds awesome (with huge smiles on thier face). everytime i think i cannot stand the drone anymore and want to convert to a muffler, i just haven't been able to do it yet. plus you save some serious weight and this mod can be done for very small amount of $. if you want sound, free flow, and low weight, you just can't beat this setup
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