So I'm thinking about getting the HP Tuner instead of buying a off the shelf PCM tune. Jw wondering how hard they are to use I know a buddy that bout a similar set-up for his WRX and did it in like 5min. The only reason I'm really thinking about getting one is becaus I think I'm gona use it for more than just my grand prix. Getting a GTO in the spring so I checked the list they said it can b used for both but just wondering if it's easy enough for someone that knows what he's doing like my buddy with the WRX and if it's worth it