HardRacing Performance
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We've got Finbro ECM's in stock for the Honda Grom w/ a STOCK BORE.
This is a low cost way to lower your A/F Ratio.
They are NON-Programmable. You cannot make adjustments.
And it does require cutting 2 of the wires from the stock ECM Harness and re-routing one of them.
But, if you just...