Spark plug NGK or OEM Mazda

I would recommend that if you get one do a full service fluid change on everything. Change the coolant, the trans fluid, diff fluid, oil (10w30 or 10w40, do NOT use the 5w20 reccomended). You'll also want to set aside $80-90 for new spark plugs, and upgrade the coil packs to LS coils from Bennet Built whenever you can. Coils need to be replaced about every 30k miles.

I changed

- 4 new NGK Iridium sparkplugs

Now post how much they want to change spark plugs. I've usually seen dealers asking for $200-$250 on a 4 banger. Or I can buy some nice NGK plugs for under $60 and get them changed within my lunch hour in the parking lot.

I run NGK Rutheniums now and they've been excellent handling 30psi of boost with zero blowout even at wider than the .024" gaps that most tuners recommend. Oh and theyre MUCH cheaper at $8/ea vs $40/ea for the NGK race plugs.

I went to colder plugs from ngk and noticed a difference in shift pattern for the better (my car is an auto).

OEM plugs are NGK as well.

I changed my plugs recently and qent with NGK Ruthenium gaped a step colder and they are working well for me, seem better than Motorcraft but thats just my opinion.

I replaced the OEM plugs with NGK, they lasted about 15,000 miles. Burger Tuning told me that 15k is about all you'll get out of NGKs in these cars.

Also dont use plugs for tuned cars if youre not tuned. Tuned cars run colder plugs. They are not the same dont listen to some of these comments lol

That gap is INSANE, or at least appears to be.

In case you were wondering why those plugs look different, that plug on the left you’ve chosen (BKR5EIX11) is a plug that doesn’t match the longevity characteristics that Nissan originally set. The electrode basically isn’t designed to last as long.