We are often asked if a synergy can be used with a remapped engine ecu. Well thanks to the wide range of adjustments, it can, and will enhance the remap, especially in the low to mid rpm range. For example a 120bhp 8valve Vauxhall reached an amazing 178bhp with both remap and Synergy 1. A Freelander TD4 gained another 20bhp compared to the remap or a Synergy 2 alone, reaching 170bhp and with no smoke. Of course you need to be aware of the possible consequences of any tuning and particularly when such massive increases are achieved.