Well I guess I was wrong, not 10% but it climbs with boost to make a solid 27whp gain on 10psi with a precision 5858. Also thanks, that cutting board is a quality piece itself👌🏻😂Originally Posted by BoostedK20
Beautiful swap parts! Never knew there was THAT much of an increase for an IM swap! The next step is to have [MENTION=28]Spaz[/MENTION] port and polish the RBC before putting it on. He did for us and we gained ~40whp with the stock 8th gen Si TB on our BoostedK20 Si.
Cutting board is also nice
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