Hey i was just looking to get some suggestions on what to do next on my car....

I have a 90 lx coupe, so far I've advanced the timing to 16deg., added a cold air intake, 160 degree thermostat, bbk shorty headders, flowmaster cat back exhaust, 3.73 gears.

I had the car to the track, it ran a best of 14.35@97mph. with my old tires 225/60. I changed the tires recently to a 245/50 and I went to the track again last night and the best i could get was 14.66@96mph .. so i need major help..  I tried everything .. well everything i know

First, what's your driving style?  What tranny you have?  And do you have drag slicks?  If you have a 5 speed, slicks and don't have a problem buzzing it, launch at 4000 and try speed shifting around 5500.  Get some rear control arms and drag springs and see what happens.  Get the Steeda front sway bar instead of removing it and then pretty much get the driving down pat first.  A coupe should be able to reach the 13's with a 5 speed and 3:73's.   

A stroker bottom end would be perfect for what eagle just said, or rather, it'd be a great addition.