2014 Red Grom
Can you still run regular unleaded gas for the Yuminashi kit or is it premium only?Not my Grom, but did some work on my girl's OG recently. Installed a new Yuminashi 143 kit (WAY better than his older kits, very nice quality IMO), Yuminashi 140cc injector (like PCX but has 8 holes instead of 6), TB cam, Yuminashi double valve springs, BMC filter & larger KOSO tube from the airbox to the stock throttle body with the DHM adapter to the throttle body, & got a tune done on it recently. Little clean up on the intake side of the head & matched the EX side to her $80 Amazon Choshi pipe. Baseline was 12.29 hp & in the 10's for AFR, he got it smoothed out and up to 14.2, so she's HAPPY AF with it..... So far she's doing 69mph GPS sitting up, and still has throttle left. Should be super a super reliable fun bike for a long time. May toss the 15t front sprocket back on it to keep the revs down where it makes the best power. I am sure we could get more power from it, but I was shooting for reliability over max hp. With a little under 10ft/lb of tq it moves out quick with her on it.
Baseline AFR was nearly off the charts rich (ECU was flashed for stock piston TB cam before).
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