I have implanted a Suzuki SV 650 engine in a Hyosung GT 650 S. Engine has 3 contacts including idle contact and no secondary air system think time is max. EZ 2003. I have installed the Hyo sockets and carburettors. Fit plug and play. I finished it at the beginning of the week. Test run-clean started and run evenly and calmly. Then test drive country road approx. 50 kilometers. No real acceleration. Like approx. 27 to 30 horses. Had to be actually bitier because of the larger Hyo carburetor. But otherwise good gas acceptance. Then Friday 2nd test drive in the mix. Of which 60 km highway. From 1st to 3rd gear unsatisfactory acceleration as at 1st test drive. All gears above U/min max 6000 and Km/h max 140 with downhill, tailwind and pub in sight. Choke pull for more fuel – minimal improvement. Other problem : Temperature indicator in the cockpit shows nothing. At the temperature sensor on the thermostat lie e whether cold or warm 5 V. Thanks in advance. Peter