yes w/ some work the 420a is a very good motor and can take the same abuse....the head would definately benefit from cams if your going turbo b/c it will help spool a lot better than our stockers..the map is not the downfall of our computer jsut that the computer isn't made to read anything above atmospheric..i actually like the map sensor much better than the mas b/c its reading whats in our manifold as opposed to something that can be lost before it gets there, ie bov or boost/vacuum leak...if our ecu would do timing retard like the turbos do it would be awsome and we wouldn't need to work around it..but to make a 420a as fast as a gst takes more money..not to mention the fact that we can't really upgrade our tranny like they can which is gay...i love my car and being boosted but to be as fast as my buddy w/ a tsi i have spent easily twice as much as he has...on stock internals w/ a 16g hes running 18psi...impossible to do w/ our stock internals..this has been proven...our engine is great , if you have the money and time boost it, it responds so well to boost..but expect to pay much more to get results
