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1. The Mazda 3/Ford Focus twins are great cars with untapped potential. Just becasue they are automatics doesn't mean they can't make big power.
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2. Like most new cars, the headers are now located at the back of the engine instead of in front. And the catalytic converter is nestled immediately after the block.
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3. The bolts are loosened one by one.
4. Two rubber hangers are located on the underside of the car that hold the stock header in place.
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5. After everything is of, the header is pulled from the top, its a pretty tight squeeze but it will come out.
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6. The big heat shield will not be used anymore but the 2 smaller bits will be returned. Contrary to popular belief, the headers are not any hotter than stock.
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7. Here's the stock header. Notice the catalytic converter after the 4 pipes.
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8. Here's the SpeedLab header next to it. Not the longer and bigger primaries and the lack of the power robbing catalytic converter.
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9. The stock header has two O2 sensors wich must be removed and transferred to the new header.
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10. Both sensors are bolted to the SpeedLab header.
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11. The new header is slipped back from the top.
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12. Two holes have to be drilled on the header flange and secured with two 14mm nut and bolt.
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13. Here's the installed header. This baby will fit all Mazda 3 engines and all Ford Focus engines except the TDCi.