2004 Audi A4 1.8T Quattro Sedan

Runs but won't move; suspected low transmission fluid, went into limp mode on two drives. Heavily modified: freshly rebuilt billet turbo, Stage 3 E85 tune, APR coil packs, 1,000cc injectors, coilovers, aftermarket headers, cold air intake, 3-inch downpipes, 2. 5-inch duals, O2 sensor delete, catch can, new timing belt with manual tensioner, new front axles, motor and trans mounts, rear shocks.