Denroll's 90mm TB inlet
We would be hard-pressed to bore any larger than this. We did manage to punch through and make one tiny little hole that requires patching. There's a 20% larger surface area on a circle with a 90 mm diameter when compared to an 82 mm and a whopping 49% when compared to a circle with a diameter of 74 mm. Notice this is just quick math regarding circles, not necessarily air flow characteristics.
One other thing I'm pretty pumped about is being able to get rid of the spacer I was using. While very handy for bolting up to an inlet without much work, it was robbing me of precious room back by the firewall. It's 3/4" thick.
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