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pretty drastic difference in performance. Actually, the peformance comes from the increased boost (boost jets or boost controller). The ECU upgrade simply makes it safe to increase boost. If you have some extra money, I would opt for the boost controller over boost jets. Whether you go with jets or BC, call Greg at Specialty Z regarding your upgraded ECU. SZ now has the ability to socket and chip ECU's. I believe they do it a bit cheaper than Jim Wolf. Also, if you give Greg your specs (Stock Turbos, Stock Injectors, Single POP, etc.), he will get you a better tune than the generic JWT "Stage 3" chip. That's my opinion.
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