| First of all the comment is they perform better than stock. When does the T22 make 200RWHP or 300RWHP? Now remember we are talking about stock. Completely stock versus aftermarket. Yes stock would spool better when new down pipes and test pipes. Now if you haven't noticed or saw Mallice posting on technical you well see that his stock head flowed 180CFM however a complete stock exhaust manifold flowed 100CFM that is a huge loss. A Greddy Manifold flowed 158CFM a huge increase. Now add to that the external wastegate design and the fact that TD05-16G is a very efficient turbo setup that uses better intake piping. You well have a better system then stock. That will outspool a stock turbo. Take a look at Freds Dyno, Sebs dyno after exhaust manifolds. A few more would serve the case as well.
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