i bought a 90 ls cougar with an 89 xr7 motor and 5spd last month. so far ive replaced 2 motor mounts, 2 o2 sensors, 2 cats, tires, oil pan, alternator, spark plugs and wires and cleaned the injectors and the k&n cone. the car runs like junk still under heavy load. according 2 the boost gauge, im pushing around 14psi at 5000rpm but ive seen it hit 15psi when im in 3rd. this is my first charged car and im totally lost as 2 y its running so bad. if anybody has any ideas, plz let me no. i took it 2 the track and ran 17.5sec without missing a shift. it also doesnt stutter or ne thing. it runs great in first but seems sluggish in any other gear. when i do burnouts, it runs worse and the rpmz alternate btween 500 and 1200. i think its the computer but i figured id c if anybody could help me here b4 i got raped at a mechanic. thanx alot. nttrain
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