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I have a 90 lx na 2.3, and I was wondering if I could get it between 130-150 hp. I would want to stay naturally aspirated(no turbo, or nitrous), and I was wondeing what needed to be done. It's basically stock, with a K&N and a custom 2.5" exhaust with a summit racing muffler. Please, any input...

My mileage/power problem is my injetors I had one bad one and decided to replace them all.Would 5.0 injectors fit my '90 na 2.3? I want accel/ford racing for $250 for a set of 8. Kragen and Autozone want about $45 for each oe replacement injector.(what a rip!)

My '90 lx 2.3 liter with a 5 spd I have had for about six months now, I've tuned it up with a new: cap, rotor, plugs, wires, K&N, and new muffler and tailpipe. It only has 70,000 original miles, runs fine, power wise, but it'll only get about 12mpg city, and about 18 highway. A 5.0 doesn't even...