Originally Posted by hun77777
shouldn't you run stage III with dps and ic? that's what i've been told. stage I for tune/DCI, II for dps exhaust, III for all of above + IC...
I still have the other set of cats. Also, 91 octane freaks me out.
I went through 3 engines with my RX-8, so I am erring on the side of caution.
Maybe Shiv can shed some light on this...