Engine

Regardless of what SPD Tuning states, I know that a Cold Air Intake and a new exhaust boosted the heck out of my Miata. That car went from 140 hp or so to 160 with new intake and full exhaust replacement. Thus, in keeping with my Street Touring dream, I decided to go ahead and muck with intake and exhaust to try and get a few HP out of this thing. I've read success stories and I'm a believer from past experience.

Intake

For intake I agonized. Should I buy a JCSports, roll my own, or go with something different. I finally found SPO MotorSports in Vancouver, WA and after talking to them went with their intake. It is very sleek looking, about the same cost as any other manufactured option and safer than the roll-my-own method. Click here for Install Directions. Got to admit, it looks a lot cooler than the original intake:

Exhaust

I decided to put on the Stromung dual-tip exhaust from SPD Tuning after hearing the sound of this thing and seeing how nice it fits the exhaust opening at the rear of the car. Pretty simple installation procedure and you end up with a very nice looking exhaust that sounds much better than stock:

A also added the Stromung mid-pipe in the spring of 2001 because the cabin drone was getting to me.  This was a quick 15 minute job that was well worth the effort.  The drone has moved back now out of the driver's seat. 

Magnecor Wires

After doing the intake I liked the colored silicon hose look. I then saw the Magnecor install instructions at the i-Club Modifications Page and decided to go with it. Very simple install, took about 15 minutes of time.

 

NGK Plugs

My car came equipped with Champions so finally I pulled these in early 2001 and replaced them with NGK coppers which seemed to make the engine run just a bit smoother.  

Unorthodox Racing Pulley

The STS rules changed in May and finally allowed pulley changes.  This mod is simple and gives you 5-6 hp at the wheels all because of a much lightened (20% weight of OEM) crank pulley.   Instructions at at the i-Club Modifications Page.   To break the bolt, which was pretty damn tough, I used the bar from my Yakima rack as a really big lever to really get on that thing.