87 Grand National with Dual magnaflow's warm rev

after warming up 5 minutes

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87 Grand National with Dual magnaflow's cold start
Cold Startup with magnaflow mufflers took the flowmasters off too much drone Car is for Sale!





Buick GN duals with Magnaflow.
Custom built by Troys Muffler Shop in Anderson SC.





87 Grand National with Dual magnaflow's idle
after warming up





87 Grand National with Flowmasters
Idleing http://hartford.craigslist.org/cto/3563104395.html




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