Quote:
Originally Posted by Happy
Can you weld in some high flow cats?
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Yeah, trying to see how I could turn this predicament into some sort of positivity. I once heard an X5 sound fantastic - almost like an E39 M5 ... that subtle M car deep growl. Would love to have that  . Any ideas how to reach there?
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'05 E53 X5 4.4i, '97 E39 528, '07 E92 335i, '16 F86 X6M.
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