2003 Audi A4 1.8T Power Mods: Treadstone T25 Log Manifold GT28RS with 68mm billet wheel (GT2868) Aquamist HFS-1, 1mm nozzle 50/50 water/meth Autospeed downpipe, 2.5" exhaust Autospeed FMIC 60lb injectors Piggie/Vast MBC @ 19psi and 25psi
Audi, A4, dyno, HTA, Turbo, GT28RS, GT2868, 2868, HTA2868, HFS-1, Stage3, 1.8t, horsepower