fuldhat Posted June 10, 2012 Share Posted June 10, 2012 Hey Good read Sorry if repost http://www.supraforums.com/forum/showthread.php?672553-Hks-full-race-t4-exhaust-manifold-test-results Quote Link to comment Share on other sites More sharing options...
supradibbs Posted June 10, 2012 Share Posted June 10, 2012 Reading that earlier very interesting especially the torque differences between the HKS and Full race. Quote Link to comment Share on other sites More sharing options...
V8KILR Posted June 10, 2012 Share Posted June 10, 2012 It was a very good test between the two manifolds and 4 different turbo combinations and well worth reading. Unfortunately the manifolds had different ID's which made the results a bit murky as regards to which is the best manifold. The HKS was 1.4x" and the FR was 1.6x" ID, so it is not surprising that the HKS spooled better. What was surprising was that the HKS produced less back pressure, but I think that comes down to the faster exhaust gas flow from the smaller runners in the HKS pushing the exhaust gas through the turbine quicker thus reducing back pressure. Quote Link to comment Share on other sites More sharing options...
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