I recently went through this fiasco, And you If you are getting a full test done, you WILL NOT pass with any mods, except. you are allowed 1 Intake mod, i.e Air filter or either Inter cooler only one of the two. An Aftermarket Exhaust is allowed only if you think It will pass Emissions and Noise test. And you are allowed Turbo Timers too. Anything Else = FAIL