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Ok did my plugs. Removed the original OE Mazda olugs, the electrodes looked really good, with no wear, they still measured at 0,030in, so that confirms the NGK laser iridium replacements are gapped correctly at 0.030in. See pucs. The only thing I noticed was the heat marks right at the base of...

I never dhowed pictures when I made my earlier post on this thread. Here they are. Again, I used Powerstop geomet coated rotors and evolution plus ceramic pads 11,000 miles later at 51k, the geomet coated rotors are holding up well, with minimal rust even after 2 NE Ohio winters. Same for the...

I just measured mine and right, they are at 0.030" +/- 0.001. Still would like to know what Mazda says the gap SHOULD be, just because they are pre gapped at 0.030 doesnt mean its correct for our engine, unless this is the only engine using this plug. It very well could be the correct gap...

Yes, modern plugs come pre gapoed, but no one plug can be gapped right for every application. Plenty of times ive had to regap iridium, plat, plugs cause they didn't match my factory spec gap. So,my question still stands, anyone know the gap for the 2.5 turbo? And by the way, ive bought many...

So what should the gap be on these, looks like they are pre-gapped at 0.030", is that correct for the 2.5L Turbo? has anyone check the gap on the old plugs to see if there is any wear other than a visual look? 40K on iridium does seem maybe a little premature, but with only 4 the cost isnt too...

Thanks Duke! Do you feel the handling got too sloppy/slow? And no clearance issues?

Duke, I am intentional think of installing 255/55R20's on my 2018 CX-9 Sig. How do they compare to the original size (other than the speedo being off), any issue with rubbing in the front wheel wells when turning, how is the ride and handling? Can you share what specific tire (brand and model)...

Surprisingly they dont do a vented rotor on the rear if thats true, nor larger surface area/pads like the front. Curious what the bias actually is. I guess the load transfer is still going to be to the front, so thats where you need the bigger hardware.

I just installed Powerstop geomet coated rotors and evolution plus ceramic pads on my 18 Signature with 40k. The rears where just about gone, the fronts had probably 50% left. I did the brakes early for 3 reasons. 1. the rotors looked like hell, rusted beyond belief, and so did the calipers...

All, I have updates my firmware one with the help from this thread, looking to do this latest 367 version, but where do I find it? All the HIDRIVE links that everyone is providing takes me to the site with an error saying the site cant be found? What am I missing?