[:@] Im at a loss here!!! I did a full tune up, fluids, filters, plugs and plug wires, and it is still sluggish. Its relly bad when its hot out too, i cant even drive up the smallest of hills when its hot out, but when its fair or just warm out it runs ok but not as much power s it should. I dont really have any engine mods done to it besides intake and exhaust. The rest of the truck is completely aftermarket but it sucks cause its nice looking but it has lost alot of power and have no idea what the hell the problem is!!! SOME ONE PLEASE HELP!!!

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