2007 Chevy Silverado - San Diego Silverado

From The Driver SeatThere's no doubt that the JBA components we bolted on added power, the chart shows increases across the board. What really impressed us was the combination of increased power without an obnoxious droning sound at cruising speed. Open the throttle and the 5.3L rumbles just like it should. AEM's Brute Force intake added a bit of noise, but we expected that when we removed the stock intake and it's network of baffles, but it can barely be heard from inside the truck. Looking at the Dry Flow filter you'd assume that it's dense filtering media would do a great job of keeping even the finest dust out of your engine, but it did look a little restrictive. The dyno proved otherwise. Nine peak horsepower and 10lb-ft of torque almost exactly match AEM's claims. We moved on to the suspension, the increased ground clearance and suspension travel made the Silverado's maiden off-road journey comfortable, but the shocks and coilovers haven't been tuned yet, so we think there's even more performance to wring out. The only compromise to the smooth ride has been an increase in front-end diving under hard braking. More nitrogen pressure in the shocks might solve it, but it only came up in one panic-stop situation. On the same note, the new wheel and tire combo is heavy, so larger rotors might be the next upgrade. We'll admit, we decided on Pro Comp's Xtreme M/T mostly because they look great, even though there would be increased road noise. They provided excellent grip off-road, but the owner won't be spending too much time in the dirt, so all-terrain tires would have been just fine, but after a couple of days driving the truck, the tire noise was hardly noticeable, although it did drown out the exhaust a bit. The Carriage Works billet grille inserts really finish the truck. The top grilles went in perfectly, and only a little bit of cursing on the bumper grille got it to work out pretty well. We're still a bit worried that the plastic rivets could work loose from the bottom, though. We'll keep an eye on them.