Like the title says, 90 Tracker, 1.6, 8v. For the past few months I would be driving down the highway |removethispart|@ ~3,500 RPM, get on an off ramp, let off the gas without pushing in the clutch, and you would think someone fired a 12 gauge in my backseat. First time it happened I almost had to pull over and clean my shorts, anyhow enough about my shorts. I replaced a missing coolant temp. sensor for kicks, problem still there. Replaced MAP Sensor vacum hose, still there. Then Saturday I opened my hood with the little sewing machine (as my dads calls it) running and tried to actuate the EGR valve and nothing happened. So I took the EGR Valve off and it was FULL of black carbon and sludge, so I cleaned it out, lubed it up and bolted it back into place. I fired the little singer back up and it began to back fire every 3-5 seconds, $#!+ I yelled at the top of my lugs, and began kicking the truck! And just as I noticed my neighbor coming out to make sure I hadn't caught the garage on fire again, it leveled off. I drove it about 20 miles hot and cold and didn't backfire again so I hope that was all, but even after all of that I am still running rich. I can smell raw gas, how is it I can lean it out a little? Also I have a big pipe and cone filter for intake if that helps... and, oh man am I ashamed to say it but, 3 inch pipe and 40 Series Flowmaster for exhaust, I KNOW, I know, ok... The guy before me did it, and I haven't had the money to replace it yet...