I have a 87 lude si. I bought it in January, when i bought it i noticed that after a few minutes after driving the pgmfi light would come on but the car ran good. About 2 months ago it started sputtering in low gears. Its getting worse and worse. It happens in every gear now and when i try to accelarate i bogs out and i have to down shift. Any help will be appreciated. Thanx I have changed my plugs and filter. i also checked the injectors and they seem to work fine.