I too am having very good luck with my OEM gap plugs. Because going back to the original poster and he is not running any crazy mods so OEM gap and plugs are probably best because hard to imagine tthis forum has found out things that mazda engineers missed. Very hard to believe.

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But we are not NGK employees how can we know how to use such an advanced tool. Only real experienced people as Vitamin M know how to really check plugs....he can look at them and just measure with his precise vision. Then, he professionally checks the logs, and knows that his gaps are perfect.

We are such amateurs I think I'm going to sign up to one of those mechanic schools so I can learn how to change oil for $10 an hour.

Yes sir that something you use to check. How about when you have to close the gap. How are you gonna do that to 5 thou tolerance.. Since you say preciision measuremnt tool i am also assuming you calibrate that tool with your mititoyo gauge blocks every year as per lab standarts... Lol. Sure you do.

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You lost all credibility. You don't know jack shit. Go post on facebook.

I trust the factory pre gapping... If i do have an issue i replace them. My car has been good. I will rest here. Obv we disagree. Thats ok. But you dont just insult the other peorson because thats no argument. Thats childish...

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If I remember correctly, pretty sure it was documented here too, that Mazda change their gap on their service manual.

Someone say Gaps?

http://i.imgur.com/Tk1VOdo.gif

My gap is better https://media1.giphy.com/media/i2vhj...BC/200w.gif#36

Should i run ngk 1 step colder with just an AP the rest is bone stock?

@Bautista; Stock plug, at the recommended gap.

Around when should i get one step colder?

Install some Denso's without gapping. Then let us know how it goes.

In b4 spark blowout.

He is running almost stock set up... There is no relevance to that comment.

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One step colder when your tuner recommends you to, or when you are running closer to 325HP or better.

Um, I realize that. My comment was directed at you......

This thread is ridiculous. Not checking that gap is just silly. Why would you NOT check the gap to ensure it's correct?

You don't need NASA to calibrate your feeler gaige or check the gap.. Youll know easily enough if you're in the ballpark or need to adjust.

Not checking the condition or accuracy of any part that is to be installed is just idiotic.

This thread is great. Vitamin probably isn't pushing the power the rest of you guys are and thus does not see bad gap affect his logs. Hell, I've just got bolt ons, e33 and meth...still check and gap my plugs.

Yesterday i decided to pull my plugs just for the fuck of it and used a feeler gauge.(even tho never missfired and i constantly monitor A/F, knock and boost and boosted air temp.) what i found to ky surprise is that the plugs were all gapped at 28. Even tho i believe they market them as oem 32 gap. Did not have to adjust and was pleasantly surprised that thr gap was spot on. I did waste time i feel like. Because stevenW is right. I am running almost stock set up.

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