Do I actually need colder spark plugs?

[mustang_puppy]

^^ I think that's what happened to me a few weeks ago when I decided to floor it and I got a hesitation, then misfires/sputtering at higher rpms. Last year I installed some 1 step colder plugs after installing some ignition coils. Still have the stock plugs and may reinstall them.

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[Andrew@Lethal]

I keep seeing recommendations for the NGK Ruthenium 95605 (-1 Step Colder) spark plugs. How about the FORD PERFORMANCE COLD SPARK PLUG SET?

Currently have MBRP catback race exhaust, Turbosmart kompact dual port bov, Ford performance oil-air separator, CVF street intercooler, and will be getting the Ford performance tune and Roush CAI.

Just looking for what's best for reliability/longevity

I would do the 1 step colder plugs. Can't go wrong with NGK or Denso. Rocked the Densos on my Tune+ tuned 15 Ecoboost Mustang and they were terrific! www.lethalperformance.com

 

[stannypack]

I would do the 1 step colder plugs. Can't go wrong with NGK or Denso. Rocked the Densos on my Tune+ tuned 15 Ecoboost Mustang and they were terrific! www.lethalperformance.com

I sold it after 3 months lol

 

[Andrew@Lethal]

I sold it after 3 months lol

What do you have now?

 

[stannypack]

What do you have now?

A new 22 GT

 

[Andrew@Lethal]

A new 22 GT

Dang! What an upgrade! Congratulations!

 

[stannypack]

Dang! What an upgrade! Congratulations!

Thanks, carmax offered me 3k more than what I bought the ecoboost for and Ford gave me 0% 5 yrs on the GT so I was like

 

[Andrew@Lethal]

A new 22 GT

Give me a call or send me a message if you want to get that thing popping wheelies! https://www.lethalperformance.com

 

[FreePenguin]

I am having the FP tune installed in a week or so. I haven't read anything about getting colder plugs for it. Where did you see this?

What is the worst that will happen if I run stock plugs for now?

Don’t change temp w ford tune
Itl run fine

I tossed oem Heat ruthenium plugsgapped To oem .028 and ran Perfect for 30k miles til I sold it

 

[TeeLew]

Free Penguin is worried about fowling plugs, so wants the higher temp plug.

No one else in the temperate zone on the planet has trouble with a colder plug fouling, but if he wants that, then good on him.

Most people like the fact that the colder plug will allow the ECU to add more spark lead to make more power by reducing the tendency to get spark knock. Also, about 10k miles is all you can get on set of plugs and keep it running at peak efficiency at high boost, because that 0.028" gap will grow over time. So, if you hate power, use high heat plugs and run them indefinitely. You'll be dialed.

 

[jdsfly]

Free Penguin is worried about fowling plugs, so wants the higher temp plug.

No one else in the temperate zone on the planet has trouble with a colder plug fouling, but if he wants that, then good on him.

Most people like the fact that the colder plug will allow the ECU to add more spark lead to make more power by reducing the tendency to get spark knock. Also, about 10k miles is all you can get on set of plugs and keep it running at peak efficiency at high boost, because that 0.028" gap will grow over time. So, if you hate power, use high heat plugs and run them indefinitely. You'll be dialed.

Maybe you haven't heard, but you can now clean and regap spark plugs. Also, when buying new plugs, you can gap them yourself and know for sure they're properly gapped. This is brand new information. Spread the word.

 

[Vicr]

Been gapping my own plugs since '77 but I'm just an OK Boomer and that's what we do.

 

[TeeLew]

Maybe you haven't heard, but you can now clean and regap spark plugs. Also, when buying new plugs, you can gap them yourself and know for sure they're properly gapped. This is brand new information. Spread the word.

You can wash a condom out as well, but that doesn't mean it's a good idea.

 

[Fury_Sauce]

10k is about what I get on Iridium plugs. I didn't have much luck with the Ruthenium version. At high rpm under boost, you'll start to get misfires. That's when I change to new plugs gapped to 0.028".

So I change plugs about every 6 months. BFD. It's $40 and 15 minutes if I drink a beer in the middle of the job. If you're trying to get 100,000 miles out of every plug, then you have to appreciate you're giving *something* up. That something is the integrity of your ignition system. It seems like a silly place to try to save money, if you ask me.

That is odd, I have Ruthenium HX and it is totally fine. 25k on them so far and are still great. Did you get the right ruthenium HX tip design? There are 2 in the markets, one for turbocharges engines and one for NA (DFE & PSPE). Sounds to me you got a DFE model of the HX?

I had quite a few Knocks and 1 misfire until I changed the OEM for ruthenium, now I get 0 knocks and no misfire.

changing these plugs every 10k is a little excessive but who am I to say lol

 

[TeeLew]

If throwing plugs at the car once every year or so is a big deal, then guilty as charged.

Plugs and coils fade over time. That's just reality. The car will still run. It just runs better when they're new.

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