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anyone know the ratings of the 5.3L stock injectors? I've installed cam, LTs, and tuning and I'm running 120% injector duty cycle!! The Yukon goes lean after 5K.. Tuners and mechanics around my area are surprised! i guess GM was spending more money on the exterior and forgot about the small...

Just checked on their website and they have a supercharger listed for an '07 5.3L Flex Fuel.... Does this mean the NNBS have a supercharger avaliable????? http://www.magnacharger.com/sc-gmtrucksuv.htm Slide all the way down to the bottom to check it out....I'm not too sure of the...

I'm looking to get some more umph of the line.... what gears should i go for? I've got 3.73s now and was thinking about 4.56s... with stock height tires.. I don't care about mileage as gas is so cheap here, just need to know how much of a difference I would feel...

I've searched high and low for grills and finally ended up buying the rokucreations grill off of ebay. Will be getting it this Thursday hopefully. The best grill I think I've found is the Grillcraft grill, althought very costly, you also have to destroy the stock grill to install it as its...