[RKDinOKC]

I heard those little QR-1 are fun. You might look at the new Blade micro quad, the nano QX, it has some new electronic stabilization thing that is supposed to make it easier for beginners. I am happy to fly my Blade mSR right now. When I can fly it fowards and backwards in all directions I will probably move up to something like the mCPx to learn about collective control. Thought about getting into the copter camera thing, but ones that are any good are super expensive, AND they basically fly pretty much autonomously using GPS. The parrot looked good, but nephew's kid got one and it's not all it's cracked up to be. Blade is coming out with some pretty cool stabilization stuff. I saw where they have a trainer, the apprentice that almost flies itself with the stabilization technology and has sensors to tell if it is inverted.

Nynor, what you are experiencing is overboost protection. Is your boost control stock? If all you changed was the exhaust I would suspect wategate or connections to it first. If it is not dumping exhaust pressure feeding the turbo the stock turbo will make about 16psi. It may be stuck or not opening fully, the line from the cyclic valve may not be connected well or leaking. There is not a lot of components actually controlling boost in stock configuration. The pressure comes off the banjo bolt on the crosspipe after the intercooler and goes to the cyclic valve. The cyclic valve sends the pressure that opens the wastegate. The wastegate controls the exhaust pressure feeding the turbo. If the cyclic valve is broken or stuck closed it will also cause overboost.