The car started to misfire at boost so I swapped plugs to NGK PFR6H-10 and everything is good now.
Don't use Bosch sparksticks.
I use iridium’s NGK haven’t had any issues.
Use the AC Delco iridium original plugs. Many sites will only show the double platinum as a replacement but every time I've ever driven an engine with those in it, it pinged or idled rough and iridiums always fixed it.
Just replaced my previously purchased NGK Iridium from Rockauto.com After 100k miles the looked like I put them in yesterday.
NGK Laser Iridium is the Honda spec and what I buy and have had no issues for 5x 105k intervals.
I read that NGK plugs already have a coating on them, so I didn't apply any when I fitted new NGK BKR6EQUP plugs. Torqued them to 25Nm.
The old ones (also NGK) came out easily and I used a bit of tubing to hold the plug as I installed it into the thread, making sure it was threaded on straight before switching to a ratchet and torque wrench to screw down and tighten.
Every one of my internal combustion engines (3 cars, 2 motorcycles, zero turn mower, has NGK plugs.
the cheap, no name one it came with was doing the exact same thing as the new NGK one I put in (and properly gapped) to try and remedy the issue.
NGK are shit for LPG. Use Denso, suitable for your car.
Ngk are trash. Go with oem Bosch
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