hey guys i have a very basic b20 swap on my dc2 and i have had a set of off the shelf toda header and i was happy with them the car made 125.7kw with the toda but i also have a set of smsp b19 header now and there was a differences in my dyno figure of 6.2kw and now before anyone jump up and say weather and so on the temp difference was 1 deg and it was the same tuner and same dyno so that my view i like both header but i love the smsp but for my new b20 set up im use a custom set made by dh racing