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**Shane@DBPerformance** · 03-18-2013

There is a big difference between the A/R rating of a divided and undivided turbine housing and then anytime you switch housing families, like from T3 to T4 the ratings are much different.

03-18-2013	#2599
Shane@DBPerformance formerly ecoli Join Date: Oct 2003 Location: On the dyno Posts: 4,892	Re: Dave's Evo X Build/The Life of Dave blog There is a big difference between the A/R rating of a divided and undivided turbine housing and then anytime you switch housing families, like from T3 to T4 the ratings are much different. __________________ www.dbptuning.com