I own a 2003 VW GTI, 1.8T. I came in for a stage 1 tune by Alex at VDUB Auto Repair, and ended up getting some spark plugs done as well. Got everything done in about roughly an hour. Took the car out for a pull and it feels great, Along with my 3inch turbo-back, the tune really does feel great. My guess would be no less than 220 horsepower with the mods i have. Car Pushes 20psi and doesn't seem to run sketchy at all. Great tune, great service. Might have to get one done one my daily driver, 2010 Golf 2.5L.