vs
Spark plug Denso or BERU
ive put new denso oem spark plugs and im waiting on my coil packs to come in from ecs tuning and i hope that will fix my problem
Pros: new spark plugs
I had really good experiance with Denso Iridium on my mk3 2.0 and mk4 12v.
Pros: good experience
Turns out the AutoLite plugs that a local parts store sold me are crap for this engine (actually caused misfires) so I went and got Denso double platinum plugs the next day and put those in.
Vehicle:
Volkswagen Passat
I decided to go with the Denso Iridium Spark Plugs Part # 5304#4 and am VERY happy with them. My car runs better than it ever has. These plugs were a little expensive but still less than what the dealer wanted for OEM plugs. I definitely recommend them!
Pros: car runs better, highly recommended
Cons: a little expensive
Part number: 5304#4
if you're gonna go iridium get the denso's because they (denso) have a smaller tip on them allowing for a "cleaner spark" and therefore a greater chance for detonation....less missfires as someone else has already said....I've run them both and I'm very pleased with the denso's
Pros: cleaner spark, less misfires
I did not, and bought the Denso Iridiums. I have less misfires and slightly stronger gas mileage since install. Just my experience.
Pros: less misfires, stronger gas mileage
I like the Denso 3008's I've been using for a couple years now in my turbo.
Pros: long-term use, good performance
Vehicle:
Toyota
Part number: 3008
im using the denso 1k22 great plugs for ko4
Pros: great plugs
Part number: 1K22
i've had the beru ultra x's in for about 8K...no problems...no noticeable improvement either...starts the same (good), runs smooth...no complaints, but no better than stock...
Pros: runs smooth, no problems
Cons: no improvement
Mileage: 8000 km
Just be careful with the Denso plugs. Denso has the gap specified incorrectly in the database so the gap is larger than they should be. It'll run but my cause to long term problems such as coilpack failure.
Cons: incorrect gap, coilpack failure risk
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