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Discussion Starter · #3 ·
A gain of 20-30HP and similar torque can be expected. If you complete the package with high flow catalysts, exhaust, air filters and ECU tune a gain of 50HP is achievable.

Of course result vary based on numerous variables. Currently we're seeing fully modified 4.3L cars out performing stock 4.7L cars with the package I mentioned above.
 
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