I just plumbed the question into CoPilot (I'm playing around with it never used it before)
Which Should You Choose?
FXE22HR11 is a direct OE long-life iridium plug—reliable, designed for hybrid VQ series engines.
IXEH22TT delivers advanced twin‑tip ignition technology, potentially boosting throttle response, torque, and fuel efficiency, while also maintaining high durability.
Practical rule: FXE22HR11 sticks more strictly to OE specs; IXEH22TT offers an upgrade in combustion performance without changing fitment or heat range.
Pretty cool eh?