Hey guys, I just bought a stock 91 AllTrac and turbo doesnt seem to engage properly, not hearing any noises as stock boost gauge rises and as it rises, car seems to chug like turbo is turning on and off or something? Also, I'm only getting 325kms city, with a full tank of 91octane. Plugs, cap, rotor and wires were just done but gas mileage still sucks..Help please:/