BMW X5 and X6 Forum (F15/F16) - View Single Post - Changing from de-cat downpipe to cat-back downpipe...do i need remap?

///MPhatic · 04-12-2024, 10:10 AM

Most tunes that I've seen differentiate between the stock cat, a 200 cell cat, and catless, so I'd bet that you need a tune based on the cat you're adding. The rest of the exhaust makes no difference.

04-12-2024, 10:10 AM	#2
///MPhatic The Seeker 14181 Rep 3,426 Posts Drives: OG M2 • Exige Join Date: Aug 2008 Location: USA iTrader: (2)	Most tunes that I've seen differentiate between the stock cat, a 200 cell cat, and catless, so I'd bet that you need a tune based on the cat you're adding. The rest of the exhaust makes no difference.
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