i have a 91 gsx with 120+k miles and it is smoking. I dont know if its the turbo or the engine. It smokes mainly when i am resting at a stop light. If its is the turbo I plan on upgrading to 16g, If it is the engine does anyone know of a good repair shop in central tx? I also have a 95 non-turbo talon and had the motor rebuilt in it. The motor was rebuilt in it because of bad rods. the rebuilt motor has no power compared to before it was rebuilt, and it vibrates when idling, the shop said it would do that at first, but its been a year now and the engine vibrates at idle and at over 4000 rpms and i have to turn the a/c off to climb hills on the hwy, could they have miss lined the timing belt??? any advise please.