I use the Area 74 CatSim on my N55 it works great and keep O2 sensors happy to allow readiness state and not trigger any cel. No issues at all.. I wish they offered a plug and play harness for install, but can understand how that would increase prices...
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X1 35i M-Sport, Pure Stage 2 turbo w/ inlet and outlet, 7in intercooler, Fuel-It PI and pump, Jb4 w/MHD, XHP, custom catless exhaust, KW V1, Volk's and everything else...!
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