One of the big differences between the Seneca system and others that I've used is that there isn't a 'waste gate' in the normal sense of the word. On 'proper' turbocharging systems the waste gate allows exhaust gasses to bypass the turbocharger altogether in order to limit the boost and so you can firewall the throttles just like a normally aspirated engine. In the Seneca (and the Turbo Arrow) if you push the throttles open too far the turbocharger keeps on increasing the boost. The first you know is when the warning light comes on as you reach the max allowable MAP and then a relief valve opens downstream of the turbocharger to limit the overboost. This means that all the air that you've expended hard work on to pressurise is dumped so you actually waste power if you overboost. What a great system I don't think!