I actually just looked at that, I was hoping to get on here before someone came on and made me look stupid. lol. 4Hi is factory. Now I really want to find out about the fogs on hi. Thanks.
I have the 15289 magnaflow, which for all its worth is barely louder than the stock muffler. Its a little deeper tone that's it. And now the resonator delete. I think its nearly perfect for a DD Tahoe. Mine is a 5.3. This combined with a Airraid MIT and a drop in filter has a great combination...
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