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Old 02-14-2012, 01:27 PM   #18
tuzzio
Scooby Specialist
 
Member#: 292532
Join Date: Aug 2011
Chapter/Region: NESIC
Location: Southwick, Ma
Vehicle:
05 STI
PSM

Default

I passed ma state inspection with a catless downpipe. I put my stock sti cat back back on the car, however. As long as your ecu doesn't throw a C.heck E.ngine L.ight for it being catless, you should be fine. I believe that a stage two map from your accessport will take care of that. Also, I do not reccommend flashing a tune that your car is not set up for.
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