1. Don't forget the 5-wire o2 sensor!
2. I didn't know they sold HAIs on Ebay now
4. Sounds like BS
5. BS, I got some for free too, meh
6. Make sure to monitor temps closely
7. Doubt it matters.
8. BS
9. Most likely BS
10. I wouldn't touch it with a 10 foot clown pole.
11. I wouldn't assume any performance mods will increase mileage, especially on the HX, it's a finely tuned machines.
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