Supporting Member betoney Posted September 1, 2023 Supporting Member Share Posted September 1, 2023 2WheelDynoWorks (425) 269-5332 Vcyclenut 239-989-7574 Ivans Performance (845) 268-1212 ***2015 Candy Red FJ-09*** Link to comment Share on other sites More sharing options...
OZVFR Posted September 1, 2023 Share Posted September 1, 2023 1 hour ago, howie333 said: Isn't the AIS used w/ the cat on a stock system ? Yes, it allows fresh air to go in to help burn off unburnt fuel as it passes the very hot cat. AIS or no AIS makes no difference to performance, and I happen to like the popping and farting on a closed throttle as it goes past the 4000's rpm mark. 1 Link to comment Share on other sites More sharing options...
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