550i catalytic converters N63 v N63TU

Amini77 · 05-17-2017, 12:34 AM

Anyone know if the catalytic converters are different between the n63 and n63tu? I know the part numbers are different but are the internals different? Like the cells inside the cats. I have n63tu cats on my n63 and I get 13mpg all city driving though.

Simple5 · 05-18-2017, 03:07 PM

I don't think there's a difference. The only difference is the early years have bolt on flanges to the exhaust whereas the newer models have slip on.

05-17-2017, 12:34 AM	#1
Amini77 Brigadier General 185 Rep 4,732 Posts Drives: Alpine White '13 550i Join Date: Nov 2011 Location: Tarzana, CA iTrader: (1) Garage List 2013 BMW 550i [0.00]	550i catalytic converters N63 v N63TU Anyone know if the catalytic converters are different between the n63 and n63tu? I know the part numbers are different but are the internals different? Like the cells inside the cats. I have n63tu cats on my n63 and I get 13mpg all city driving though.
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05-18-2017, 03:07 PM	#2
Simple5 Major 347 Rep 1,396 Posts Drives: 2013 M5 Join Date: Jul 2011 Location: USA iTrader: (8)	I don't think there's a difference. The only difference is the early years have bolt on flanges to the exhaust whereas the newer models have slip on.
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