i would address the cat as well, i had a problem with my factory being stopped up and i installed my test pipe(race pipe) and it took off, i've got a 95 ls pictured below, that i'm dropping another b18b1 in because of a little timing belt prob!!! you sound like your running good times for ls, i've never run 1/4 mile but turned high 9's on 1/8th mile, with aem f. reg.,dc 4-1 stainless hr, high flow cat,2.25 mid pipe, konig rear sec., venom inj, act street strip clutch, lightened flywheel, wr-throttle rotor, msd wires, on a mid to low compression(150,000 miles) b18b, should be a little better with my jdm replacement. i'd like to know what you find out!
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