I have to bring my XR-650R to the Japanese inspectors for the biannual emmissions/safety check. Since I bought the bike I swapped out the restrictive arrestor with the HRC unit and added the edelbrock pumper carb (it already had the HRC intake manifold). Can I just put back the stock restictor for the test, or will I need to re-jet? I know the exaust restriction will tend to make the bike rich on top end but I only want to make a temporary adjustment for the test without messing with the needle or pulling the seat and IMS tank to adjust the mixture. I think they are only checking for decibles and wont run past mid-rpm level.