Mis-fire Cylinder #2...now #2 and #3

[Juben]

Now now.... I know this forum likes to run with anything in particular and I'd like to just say that there was probably just a bad batch that happened to get out. Many others have not had any issues with densos in the past so let's just take that into consideration before we try to act like one plug is better than the other, once tightened up there was no problem with my set.

Well, I have 50k miles on my Mustang, probably more than 90% of the people here, and I've used every brand of plug that'll work in our cars. I didn't crap on the Densos. I said that they seem to wear twice as fast as any other plug that I've used (do a search and you'll see that I've said this for a long while now). You can run a Denso and a NGK for the same amount of time, pull them out, and you'll see a noticeable difference in the wear between the plugs. I've ran two sets of Densos, two sets of NGKs, and two sets of the Brisk plugs (I only ran the first set of Brisk for a limited time due to being too cold).

In my experience, the Brisk seem to be the better performing plugs in regards to performance and longevity. That's not saying the Densos are bad plugs or are going to blow anything up, but rather it's just a good-better-best scenario, with the Brisk being the best right now (in my opinion from my experience). The factory plugs are NGKs too, for what that's worth.

If anyone has Densos and are having no problems, I wouldn't run out and change them. Also, maybe others have had better luck than me, but I was speaking to my own personal experiences with thousands of miles to tell what works for me and what doesn't. Again, that doesn't mean you shouldn't run Densos because I don't think Adam would pimp anything that he didn't feel was a good product, but rather I thought the wear was a bit too accelerated for my liking (given the mileage on the plugs), so I switched to something that I found more suitable.

Also, 5.0yote mentioned, always make sure the caps are tightened. I've ran into this across every brand of plugs I've tried over the years and it's more common than you'd think.

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[Juben]

Are you running the Brisk 14's and at what gap?

I just saw this or I would have included it in my reply above.

Nevertheless, I am running the Brisk RR14S plugs. If you start looking to purchase a set for the EBM, you'll come across two styles of the 14S plugs: the 14S and the 14YS. The YS is a standard style projected tip plug (think factory) whereas the S is a non-projected tip plug. Non-projected tips are said to be better for nitrous/high boost applications, which 24-26 lbs of boost would be to me. I also contacted Brisk to later receive a reply from the regional manager and he also stated that he felt the non-projected (14S) tip would be best suited to our application.

Like I said before, my first set of Brisk plugs were the RR12S (two ranges colder) and they didn't work well with E30. Now, straight pump gas (91/93) might work just fine with two ranges colder, but the E30 wasn't copacetic with them.

The RR14S plugs have been great so far and seem to be holding up extremely well. The Brisk are pretty darn expensive, but from what I'm seeing right now, they seem to be worth the price. I usually change out plugs every 10k-15k miles depending on how they look, but these seem like I could comfortably get 20k-30k out of them.