What should I start with. in the end i'm looking for around 400 HP and I've been looking for what upgrades to do. What chip, intake, and injector is best for something like that and still be able to pull every day?

 

Guages, fuel system, clutch, 150 sticks, smarty, and a turbo upgrade
An air intake and 4' exhaust might help cool you down too

 

HO's like sticks(lol - sorry!). But anyways, HO respond very well to injectors. I have an 01 HO also I put an EZ on her first. Then took it off and put 100 horse injectors in it's place. It almost felt like I had more power with the injetors. Get gauges first, injectors and a box. You'll need something with a boost fooler in it. I second the smarty. That'll get you started. It's all down hill from there. Break out the credit card.

Oh on a side note. I dyno'd mine with just 100 horse injectors and got 349/748. Got the dyno sheet to prove it.