I had one of these it was alright, 102bhp...
cold air intake is the biggest cheapest difference, STICK WITH a 4-1 Header if you get an aftermarket one, the D15b7 runs like crap with 4-2-1 headers.
[FONT=arial,sans-serif][SIZE=-1]NGK Iridium Spark Plugs[/SIZE][/FONT] and wires......made a difference on it as well
2 1/4 Inch exhuast system, or atleast 2inches from the stock piping.
I did all those things to mine and it ran sweet, except i had a 4-2-1 header and that just screwed it up, especially when you don't run the o2 sensor to the down pipe, i had mine on the header (manifold)