Long Term Spark Plug Thoughts

[victorofhavoc]

Well, that doesn't say "EQT" on it. So it won't make your car idle smoother, reduce knock, and increase throttle response.

Can't argue with that logic!

 

[jimlloyd40]

Well, that doesn't say "EQT" on it. So it won't make your car idle smoother, reduce knock, and increase throttle response.

And none of that will happen without the red APR coils to fire those spark plugs up.

 

[tigeo]

And none of that will happen without the red APR coils to fire those spark plugs up.

*gulp*

 

[Agray]

is38 and big turbo folks…. Ruthenium’s still working out for you?

 

[jimlloyd40]

is38 and big turbo folks…. Ruthenium’s still working out for you?

Yes. On second set currently.

 

[victorofhavoc]

Yes. On second set currently.

How many miles do you run them before replacing?

 

[jimlloyd40]

How many miles do you run them before replacing?

15K. It doesn't matter what plug I've used I change them at 15K.

 

[tigeo]

Ruths with IS38 and track use.

 

[ZuMBLe]

Just dropped in another set of Ruths last week just because. Had maybe 10k on them? Looked great. My car mostly sees city driving, but there are some hard abuse sessions in there were "a lot" of boost, and with ethanol. No issues.

 

[DrFunkalupicus]

I have a "question" on spark plugs. I am running EQT stage 1 and I switched over to the RS7 plugs a few months ago, but I was wondering if it may make more sense for me to go back to the stock plugs gapped at .024, since the vast majority of my driving is in town, short, and quite a bit of stop and go. I was thinking the warmer plugs may be beneficial in my case.

 

[jimlloyd40]

I have a "question" on spark plugs. I am running EQT stage 1 and I switched over to the RS7 plugs a few months ago, but I was wondering if it may make more sense for me to go back to the stock plugs gapped at .024, since the vast majority of my driving is in town, short, and quite a bit of stop and go. I was thinking the warmer plugs may be beneficial in my case.

I wouldn't bother. Just change them at your regular interval and then switch back to stock. The ambient temperature have nothing to do with the heat range of spark plugs. It's how hot the plug is running when the engine is running. An example is when you're racing the colder plug is desirable because it can shed heat better than a warmer plug. And that is also why I'm against running colder plugs on street driven cars that don't generate that heat in the plugs.

 

[Acadia18]

Rofl

https://eqtuning.com/blogs/technical-write-ups/eqt-talks-about-spark-plugs

"We're tired of seeing FB posts about electrodes breaking off. So we're going to recommend everyone run racing plugs now."

 

[DrFunkalupicus]

Rofl

https://eqtuning.com/blogs/technical-write-ups/eqt-talks-about-spark-plugs

"We're tired of seeing FB posts about electrodes breaking off. So we're going to recommend everyone run racing plugs now."

Yay something to make self paranoid about

 

[starsmith]

pretty plausible there is a considerable overlap in the venn diagram of "people running RS7 plugs" and "people screwing around with their motor for the first time without proper tools and knowledge", so I'm not ruling out user error as an explanation for the higher failure rate. the most recent guy with a broken plug on facebook admitted he didn't torque to spec for example.

 

[victorofhavoc]

Fwiw, I've run the ngk rs7 plug, a brisk 1 step down plug, an ngk racing one step down plug, and the stock plugs with a stage 2 is20 unitronic tune. My car has been stage 2 since I bought it with 14k miles and now it's at 48k. I cannot stress enough how rough I am on this car with the majority of the miles I put on being track miles and the rest of them being <10 min drives where oil barely gets to temp during summer, and never gets to temp during winter. I really don't care to baby it until warm... It has an ecu with mapped tables for the "driver stoopid" to keep from blowing things and it has certainly cut power and Rev on me when I floor it while cold.

On the street all the plugs were fine. On track, it was a horse of another color. The rs7 plugs pulled timing and threw codes for high rpm misfires (usually around the 5200-5500rpm range). The ngk racing plugs were fine, but they were very worn looking after one winter of driving with the insulating medium basically turning burnt black. They lasted 4k miles before their wear level on visual inspection was unacceptable and I started getting low rpm misfires. The brisk plugs seemed fine after 6k miles, but I pulled them during an oil change and just went back to stock because I couldn't find the brisk size locally that day and the dealer sells the oe plug for 8$/ea.