ceramic coating, not powdercoating, just before you take you turbo to a powder coaters :P

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MY93 Impreza GX 1.8L, 0hp, 0nm

im about to ceramic coat my turbo in the next month

had my turbo cermaic coated(internal and external, cold and hot sides) a few months ago and its lowered the under bonnet temps dramatically while increasing the spool and seemingly power also..

it costs next to nothing if turbo is out of car or before fitting.. mine was 200 including courier costs as im lazy..

helped my 'relatively cheap and small' vf30 into a fuel/engine internal saving 195kwatw@17.8psi.. heaps more there if im after it.. to reach 17.8psi spool up is around 3600rpm in 1st and 2800-3000rpm in 4th.. as i said it also has helped with fuel economy and tuning.. car managed 500km out of the same tank from dyno work and road tune by RT..

thanks to tuna for the info a few months ago

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"640K ought to be enough for anybody." - Bill Gates, 1981