What kind of plugs are you running? Did you change your plugs, or leave the old stock ones in?
91 awd: 60-1, 880's, E-Prom, etc. 93 awd: JDM 6 bolt, K&N, full exhaust, Wally 255, otherwise stock.R.I.P. the original "Factory Freak"15.5's with short ram and catback only1996 RS 5-speed