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Index of Pages: 1-Introduction , 2-Tires & Wheels , 3-Suspension , 4-Alignment , 5-Performance , 6-Exterior , 7-Interior , 8-Autocross & Track , 9-Adventures & Trips , 10-Paint Protection , 11-Maintenance , 12-Safety .
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PERFORMANCE
Jackson Racing Cold-Air Intake
Colder air in the intake gives back roughly 1hp for each 10* drop in air temperature, due to increased density. Underhood temperatures can rise to 150-160*F or higher. Instead of sucking in heated air from inside the engine bay, a 100* day can even see 5-6hp gains simply by grabbing the colder air from the front of the car.
Timing Bump
Advanced the timing from the stock 10*BTDC to 14*, for a noticeable shift downward in the torque curve. Torque comes on more strongly from 3500-6000 rpm's, but is steady and smooth all the way to redline. Adds 4-5hp and similar torque across the range. No pinging on 91/92 octane.
Flyin' Miata Aluminum Race Radiator
As cooling problems increased during the summer, I realized that the original 7 year old radiator was beginning to loose its punch. The new radiator has twice the fluid capacity and is all-aluminum. Should be a great guard against overheating in even extreme driving conditions.
Exhaust System -- Custom, stainless, mandrel-bent, high-flow, OBDII-compliant.
Exhaust systems lead a hard life. The high temperatures and salty coastal environment wreak havoc on the pipes, gaskets and flanges, eventually tearing everything open. My solution was piece-meal, replacing failing components one at a time as they wore out. Of course, I spent a long time tracking down various and sundry rattles as they came and went.
Now, the final pieces are in place. First step two years ago was a stainless rear pipe, resonator and MagnaFlow high-flow cannister muffler. Last year, I installed a new MagnaFlow OBD-II compliant catalytic converter. This year, I replaced the down pipe, front pipe and O2 sensor.
After a dozen high-speed, high-temp runs to get everything up to roasting temperatures, everything was completely rattle-free. Huuuummmm.
I'm sure it's worth at least a few HP, with all that shiny stuff under there ... right? ~:)
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Index of Pages: 1-Introduction , 2-Tires & Wheels , 3-Suspension , 4-Alignment , 5-Performance , 6-Exterior , 7-Interior , 8-Autocross & Track , 9-Adventures & Trips , 10-Paint Protection , 11-Maintenance , 12-Safety .
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