Gibson system driving impressions
I have driven about 500 miles since I installed the Gibson system. Most of this distance has been highway driving. I went on a trip this weekend, 224 miles each direction. I make this trip every month, driving the exact same route and setting my cruise at 75 MPH. Over 100 miles of the 224 are on Interstate 10, with no stopping and staying on the cruise. I always have about 500 pounds of cargo.
My Armada is a SE, Big Tow two wheel drive. The only mods are the Gibson system and a K&N drop in filter.
Without the Gibson (with K&N) I always get 15.3 - 15.8 MPG. On this trip with the Gibson I got 16.27 on the way there and 15.67 on the way back. I don't think this slight increase proves anything yet; I need more data. I will be making another similar trip in two weeks.
I did notice a increase in throttle response and acceleration. Normal starts seem to require less throttle and there was a improvement in passing on the highway. I had to use less throttle to pass and the transmission didn't downshift as much.
Sound level is not much different from stock except there is a drone from about 45 - 60. The sound level at 70-75 MPH is no louder than stock. Reving the engine and accelerating produces quite a bit more sound than stock. I will try to get some sound clips.
Overall I am pleased with the Gibson system. Does the possible increase in fuel mileage and power justify the cost? Probably not, but what's that got to do with it. We boys got to have our toys!
If you are looking for a quality exhaust system that does give a performace increase in the lower RPM range (where we really use it) I think you will be pleased with the Gibson single system.
I have driven about 500 miles since I installed the Gibson system. Most of this distance has been highway driving. I went on a trip this weekend, 224 miles each direction. I make this trip every month, driving the exact same route and setting my cruise at 75 MPH. Over 100 miles of the 224 are on Interstate 10, with no stopping and staying on the cruise. I always have about 500 pounds of cargo.
My Armada is a SE, Big Tow two wheel drive. The only mods are the Gibson system and a K&N drop in filter.
Without the Gibson (with K&N) I always get 15.3 - 15.8 MPG. On this trip with the Gibson I got 16.27 on the way there and 15.67 on the way back. I don't think this slight increase proves anything yet; I need more data. I will be making another similar trip in two weeks.
I did notice a increase in throttle response and acceleration. Normal starts seem to require less throttle and there was a improvement in passing on the highway. I had to use less throttle to pass and the transmission didn't downshift as much.
Sound level is not much different from stock except there is a drone from about 45 - 60. The sound level at 70-75 MPH is no louder than stock. Reving the engine and accelerating produces quite a bit more sound than stock. I will try to get some sound clips.
Overall I am pleased with the Gibson system. Does the possible increase in fuel mileage and power justify the cost? Probably not, but what's that got to do with it. We boys got to have our toys!
If you are looking for a quality exhaust system that does give a performace increase in the lower RPM range (where we really use it) I think you will be pleased with the Gibson single system.
