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      05-08-2020, 10:18 AM   #6
Hiflyer731
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Drives: 2016 340i
Join Date: Dec 2018
Location: Southern California

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The cheapest route to more volume and performance would be a non resonated midpipe, catless DP, and aftermarket tune. Close to 400 whp and, if you are patient and buy used, about $1000-1200. If you bought it all new you're still at maybe $1400-1500.
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