Without a doubt. When they release something with 503hp, the engine is designed to run that 503hp extremely safely. Components can handle it no problem, and the AFR is in a really safe zone. Tuning it to push on that engine a little more and even bump it to 515-518hp shouldn't be an issue at all. Could just be a matter of adding a bit more boost and adding/pulling some timing.Think the engine can handle a tune to pump out more than 503hp?