Final GTS
Full Access Member
I know you are extremely knowledgeable about this stuff so I don't mean to second guess you, but MA has really strict emissions and some how my truck passed with Headers, hi-flo's, no rear cats, 3" exhaust, Torrie's tune, U.D. pulley, JTSVP T.B., and 170* therm. Maybe I was just lucky???
That answer is easy. MA is a state that *actually* tests emissions output, and not plug-in monitors. Secondly, based on your mod list you still have SOME catalytic converters, and all of your O2 sensors are in place. Provided you aren't triggering CEL's being either programmed out or just a well built package, the other mods dont really impact emissions controls enough to matter.
That truck would pass both an analyzer test or a monitor test based on its setup.