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Get a dog... :rolleyes:
Beat me to it.

SC'dKellenersM5 said:
02 simulators or having the codes turned off with software tuning.
Do they make any O2 simulators for the M5? I hadn't seen any for sale. Granted, they are just a resistor and one could get out the trusty voltmeter and figure out what you'd need.
 

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Do you need simulators or software if you're just getting performance cats?
 

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YES
 

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Do you need simulators or software if you're just getting performance cats?
You **shouldn't** but the M5 is very touchy when it comes to the CEL and airflow through the exhaust.

Also, are "performance cats" worth it when they only add 2-5HP total?!?!
 
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