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September 27, 2004
Adding the MagnaFlow exhaust to Avalanche
Two weeks ago, Steve added the MagnaFlow Performance Exhaust to the Avalanche to top off the tuning. The manufacturer says 9hp and 11fp gain. The really cool part is the sound though. It is a straight through system, but since you still have the cat, there is some muffling and it is not an obnoxious roar. Just a slight noticable throatyness. You can hear the sound here. It is a fully stainless system as well that looks great sticking out the side. So the stock is a 3 inch exhaust. The MagnaFlow bumps it up to a 4 inch.
I didn't notice any real performance difference after the supercharger and the reprogrammer. The biggest difference was the sound. I am going to take it to a dyno next week and see what it is pushing. I am thinking it is over 500hp.
Posted by Martin at September 27, 2004 6:51 PM
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