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swarb · 05-17-2016, 10:32 PM

2,3,1
Cats work with heat. The one closest to the engine would make the most heat and work the best.
High flow cat flows better so my assumption is that it would filter less than the stock unit.

05-17-2016, 10:32 PM	#3
swarb Senior Member Join Date: Sep 2014 Drives: BRZ Location: Los Angeles Posts: 3,052 Thanks: 1,773 Thanked 2,451 Times in 1,271 Posts Mentioned: 79 Post(s)	2,3,1 Cats work with heat. The one closest to the engine would make the most heat and work the best. High flow cat flows better so my assumption is that it would filter less than the stock unit.