The stock oil cooler (which btw was on all turbo audis since 1983) is nothing short of a pooch and IS where you should look for something, oh maybe, well, ah, um, 3 times the stock size..... The stock oil cooler is bettrn nothing, but with stage (xxx) of turbo/computer box mods, it just routes hot oil outside the engine then back, but has little cooling effect.... Not just thinkin here..... Scott