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I put an areoexust on my 85 bj60 first thing. Mostly because when I aquired the rig the muffler was dying and I had a turbine on hand. Turbines create a vortex, which instead of having no restriction, it creates a vacume. I noticed quite a difference in performance as I have with my 4runner. As well as a 10-15% increase in fuel economy. The only negative efffect in the cruiser (none really in the runner) is a huge BRRRAAAAP at about 1800 rpm (most likely because of resonance). When she gets out of the body shop, I will turbo it. If the resonance problem is still there I will go with a resonance reducer or silencer from the same company.
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