If you change out the cats the car will run leaner. Change the exhaust and intake AFTER taking out the cats it will be even WORSE...without a TUNE.
Swap out the cats LAST and get a tune and it will be fine
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2010 40th Anniversary ll GT-R start button ll GT-R map lenses ll Plastidipped fangs and rear valence ll OEM foglight & switch ll Motordyne E370 Cat back ll Motordyne ART Pipes ll Takeda aFe Attack CAI ll Sprint Booster ll Z1 34 row Setrab oil cooler ll Z1 Motorsports M-Spec Shift Knob
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