Super Happy! Bike runs great!
I live in Martinique and I have the Honda Grom to go to work. There is a lot of hill here and I first did the work for stage 1 exhaust Zoom chimera intake and ecu reflash 1 and with the reprogramming the bike was already working much better.
I then mounted the new camshaft I still gained speed but only in the high towers ... I just went to stage 3 big bore kit and it's another bike, the ribs are no longer a problem the bike does not lose speed and we can even accelerate on the flat I'm at 120 km / h for the moment because I know that the bike will work better and better so a big thank you to David for his work his responsiveness and answers to my questions ... The only thing is to provide a more powerful battery so there is compression to start ..
David @DHM responded to my question even though it was listed on his Site. I sent my ECU sent from Hawaii to Florida and David made a quick reflash an turnaround to get it back to me so I could back on the road again!
Bought the 186 after seeing the biggest torque gains in the low end out of all of the big bores... was running the Finbro ECU/PCX150 injector and it was 19 AFR at anything but idle (dont get the finbro ecu!!!!) Still more power than just a cam. Ordered this retune from DHM after speaking with David and... JUST ORDER IT. My grom sounds and feels like a baby vtwin. Stock clutch slips like hell from how much torque this tune gives you, so buy a clutch kit or stiffer springs, definitely required. For perspective as we all know 4th gear sucks on the grom. With this kit and tune, 4th gear pulls from 20mph(3k rpm?) All the way to redline, quickly. You will be able to decimate stock bore groms in rolling races while you sit in 4th gear and never shift. BUY IT.
DHM 186cc ECU Reflash Service
This service is for customers who already own a 186cc 2v big bore kit and are looking for a tuning solution. This reflash makes 14.5 ft/lbs of torque and 16.5hp when paired with the 186cc kit and an upgraded intake and exhaust system. This reflash requires a PCX150 injector and upgraded intake and exhaust. If you have any further modifications please contact us before ordering.
You can choose to send your ECU in to be flashed, or pay $95 extra for a preflashed ECU.