k20 2.5" or 3" exhaust!!

[black_dc_5]

I used to have 2.5 straight through w/o muffler or resonator with spoon header combo, that's just too friggin loud for a daily drive car. I shift at 2000 rpm top otherwise it's just ridiculously loud. So watch out for cops.

the power gain is not significant w/o muffler, I tested on dyno it only gives 2kw extra top end

someone told me before that some race track actually limit the noise level, e.g. phillip island. Someone got banned for the day with BC2 on DC2R.

I am actually will do a custom b-pipe for my dc5, as I already have spoon axle back. So should I just go 3" then? LOL