Will i notice a difference in the throttle response if i extrdue hone port my existing intake manifold and boring my stock throttle body to about 65mm? is it worth it? I have a B16A2 - No head work has been done but i have a I/E/H setup. I'm about to have it tuned with the hondata S100 ecu and was just wondering if i should carry out the work above first?

 

Cheaper/better of to buy something like a Skunk2/Blox/Wicked Intake manifold ...or even the AEBS one. Get Max-Bore.com (h-t sponsor) to do your throttle body out as large as it'll go, and match the plenum to the TB.

You'll be good to go.

- Nathan