I've been doing some thinking and before you jump into the nitrous, consider these mods.
1. Cold Air Induction (having the cone filter mounted in the engine compartment isn't helping, you're pulling in too much engine heat) $90-$125
2. Adjustable FPR, fuel pressure gauge and a dyno tune. I found about 25 HP at the dyno, it's the only way to garuntee you've got the best tune for your combo. about $200-250 total
3. Tires - $211 delivered from the Tire Rack for 255/50/16s. (get a hold of me this weekend and I'll show why I like the new tires so much

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out