vs
Spark plug Denso or OEM Audi
I bought the absolute cheapest plugs available ($1.50/plug), and they are branded "Denso Toyota Iridium" - I assume fakes, but my magnifying glass does seem to show an iridium tip, and they work great.
Pros: work great
I did Denso 3297 from RockAuto. They work great.
Pros: they work great
Part number: 3297
I've always used the Denso SK20R11 plugs in mine and been pleased.
Pros: been pleased
Part number: SK20R11
Denso iridium plugs, no more no less and no exceptions.
Pros: high quality, reliable
denso iridium. do them and they’ll be good for another 200k km or more
Pros: good for 200k km
Mileage: 200000 km
Denso and Bosch have worked well for us on a 1.6.
Pros: worked well
Vehicle:
Ford
Denso itv20 (5339) for stock/mostly stock. ITV22 (5340) step colder if more mods. I have only used itv22 since 2015.
Pros: good for stock
Cons: only for stock
Part number: 5339
Bought some Denso 3450 Irdium plugs online. After reading about counterfits. I decided to test mine.
All are gapped .43 for the OEM spec for a 2014 Nissan Xterra. I measured the Irdium electrode tip which is 0.7mm and appears blue
Pros: gapped to OEM spec
Cons: potential counterfeit risk
Vehicle:
Nissan
Part number: 3450
I had EPC light/limp mode and P303 as well about a month ago on my '12 GLI (APR Stage 1+) at 102K miles that recently had a walnut blast and new Denso plugs at around 101K miles. Swapped coil packs as well and still P303 with EPC light/limp mode.
Cons: catastrophic failure
Vehicle:
Volkswagen
Mileage: 101000 km
I’m IE stage 1, had the plugs changed to rs7 plugs I had been waiting to Install (they were early versions) not long after, left the shop and had horrendous misfire. Limped back to the shop and got OE plugs back in and it worked fine.
Pros: worked fine with OE plugs
Cons: horrendous misfire
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