Get a 200 cell high flow downpipe and resonator delete. I have it on a 235i and sounds great, I have some sound clips I posted on the forum in an earlier thread.
If you sell your current downpipe the cost should be within your budget.
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Garage:
2022 Telluride Nightfall
2016 Suzuki DRZ 400
2016 M235i Mineral Gray/Coral Red
2018 X3 M40i Alpine White/Black - SOLD
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