In my experience in the world of Honda's, most cars leave the factory with them leaving a fair bit of room for improvement. They run rich, and arnt set up to give their full potential, more a trimmed back factory level of potential. Hondas were easy to tune, Plug a laptop with a piece of equipment called flashpro and let your tuner do its magic on the dyno. A stock type r would produce anywhere from 197bhp to around 210. A simple remap changing AFR values, cutting some ignition, leaning out the fuel ect would produce around 225 on some. Nothing unsafe, just readjusting values that have been set up poorly by the factory on the ecu.
The same could easily be done to our masers if you had the hardware to map your ecu. Id have no doubt DMS know what theyre doing, a smooth linear increased power delivery and increased throttle response with improved fuel economy is a basic thing to be able to achieve in the tuning world. I wouldnt be surprised if 450hp at the flywheel could be produced seeing as at stock they produce an advertised 390bhp which like any engine means its lowest value as you cant advertise a car to have 410bhp and when dynod actually produces a lot less. So they go with the lowest possible outcome, as all engines differ slightly.
If i was bothered about figures (which with the maser im not to be honest) then id go have a remap without doubt but i wouldnt pay more than about 400 quid for perhaps 2 hours on the dyno of tweaking
