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Grom cam & stock ECU

ball_socket

Member
Joined
Nov 28, 2022
Messages
73
Location
Santa Cruz, CA
I searched around a bit and didn't see this discussed anywhere, apologies if I missed it. Has anybody tried a stock Grom cam in a CT with the stock ECU?

I have parts Grom motor laying around with a cam in it...
 

dmonkey

Well-known member
Joined
Jul 4, 2021
Messages
3,425
Location
Loveland, CO
For the same generation engine, it likely has the same exhaust and intake lift. For the JA65 it's even the same part number shared between the Trail, Grom, Super Cub, Monkey, and Dax.
You can click the "Diagrams" tab here to see the interchange list.

The Trail's performance difference is probably mostly due to the the tune, exhaust, airbox, and gearing, with the tune being the most significant and what Honda call out.
 
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