dchung1

I just removed my stock header.. btw i have a 5th gen base prelude 2001.

and i noticed the dc header opening diameter is 42 mm approx.. and the engine block opening is 35mm where the dc A pipe connects to.. so my question is do you guys think I would get any benefit matching the engine opening to the dc header opening by dremeling it out a little of course carefully.

has anyone done anything like this

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2001 base 5 speed, vafc tuned,aem CAI with air ram, AEM pulley, apexi ws, msd 6A , DC CC headers, car sound 2.5 cat, coolant bypass, egr bypass, ob2 workaround, no back seat, tein ss, nuespeed strut, progress rear sway.