AMR RACING&rsquo;S SMART TRE,timing retard eliminator &ndash; SUZUKI-Models in Details Best "bang for your buck" performance upgrade, period. Longer & Smoother timing curve (helps a great deal when power shifting) Compatible with Dyno Jet Power Commander. Modifies the timing map of the ECU for optimum performance. Removes the Factory Governor. Gear indicator will not work when installed.