Yeah it has changed my habits. When I bought my flowmasters, I started driving it different. I constantly have my foot in it, just so I can the best outta the sound.
So my gas mileage actually went down after installing the exhaust. But after the prices are getting so high I think I had better start driving a little more like an old granny and less like a nascar driver...
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*Jessica 1991 Mustang GT Convertible, Flowmaster exhaust, K&N air filter, Cobra rear wing...