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Here's the bad boy Buick V-6 after installation with all its accessories. Notice the stock intercooler, we plan to upgrade this unit later as it will certainly be a bottle-neck in our airflow, boost and power gains. Besides the new headers, under hood is all the same, just cleaner looking. During shake down street driving we noticed a smoother running motor without the V-6 stumble. At WOT, boost was only holding at 14 psi. With less backpressure and more air freely flowing through the motor, we lost roughly 5 psi of boost. This is a normal occurrence on a forced induction motor when high-flow heads, a better cam and/or headers replace manifolds. After a brief break-in period (about 100 miles) we figured we could safely raise the boost back to 19-20 psi while dyno testing. View Related Article
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