Quote:
Originally Posted by Irace86.2.0
Ok, maybe I read the post wrong. It sounded like you were saying the turbo hits a boost limit under the threshold of your wastegate, so the wastegate is always essentially closed. It sounded like you were saying the turbo was such a small compressor it couldn’t flow enough air to hit higher boost levels. I assumed you modified a turbo with a restrictor plate or changed the compressor wheel or housing. The 18G can hit much higher boost levels than that, and so do smaller turbos.
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Boost pressure is a measure of restriction to flow, nothing more. A turbo breathing through a relatively low restriction engine/exhaust/etc. won't make much boost, but can still be flowing at or near its max flow rate.