I will be upgraded my turbos shortly with gt28r (z1gt600) turbos and MS manifolds. I am debating on going with the 3" expansions or 2.5 supersplits. My question is is it worth the extra$$ for the 3" expansion Dp's over the Supersplits with my turbo choice? I can't seem to find any post on the differences in output over the other with these particular turbos. I'm trying to justify the extra 5-$600 for expansions and test pipes to match for the performace gain I may get with these smaller turbos, power, Spool up ect.
 Coming soon!! Zspeedperformance.com
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