SP542 Thread

[0r30]

Any folks running SP542s with the Whipple kit?


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[hammer73]

Any folks running SP542s with the Whipple kit?k

Yep. No problems.


18 SCrew Magnetic, Roush CAI. Whipple tuned. SPD adapters, Kooks Green catted down pipes. Kooks mid pipes w/ resonator. HF & VHF Connected.

 

[0r30]

Yep. No problems.


18 SCrew Magnetic, Roush CAI. Whipple tuned. SPD adapters, Kooks Green catted down pipes. Kooks mid pipes w/ resonator. HF & VHF Connected.

Did you use the recommended gap from Whipple or went with a larger gap?

Thanks


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[hammer73]

Whipple recommended.


18 SCrew Magnetic, Roush CAI. Whipple tuned. SPD adapters, Kooks Green catted down pipes. Kooks mid pipes w/ resonator. HF & VHF Connected.

 

[802Avalanche]

Any folks running SP542s with the Whipple kit?


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+1 here for Whipple Kit running SP542 gapped to Whipple spec. I am actually going to change plugs next week and stick with this setup.

 

[10SpdsOfFury]

I have the Whipple Kit and SP542’s gapped to Whipple spec and have 15k on these and love them.

 

[Donovan]

I definitely have a stumble and a rough idle.
20k miles
2017

COBB stage 2
SPD
CVF FMIC

Ordering SP542s ( 578s ) now

 

[GCATX]

I put some in yesterday, 31k miles. Main thing I noticed, it seems to shift up a little sooner just cruising around. Also seems quieter. None of that makes sense, but that's my story and I'm sticking to it.

Stock plugs did have some degradation or very small blistering on the insulator.

 

[Brad_hartpro]

i had ordered these plugs a while ago, but I let them sit on the shelf.

Today I decided, since I'm about to head out on a road trip, and I had some really weird misfire messages pop up in the past week, that I'd at very least pull the factory plugs and take a gander.

I recently trimmed my exhaust pipes to a turn down over the axle in preparation for the bumper I ordered for the rear. Since I trimmed, I've also been getting backfiring.

Based on the way the plugs look...

My truck is apparently subject to some carbon fouling and looks to be a little too hot/lean from what the plugs say. They certainly weren't that nice cardboard brown. could also be a little bit of oil fouling.

I have had ticking and other noises on start up.

I decided to take the 15 mins and swap the plugs.

So far in the couple mile test drive afterward, no ticking, smoother throttle response, and the motor seems to rev a little freer too.

We'll see how she fares on the drive this weekend, but so far I'm rather pleased.

For reference, my truck is an 18, has about 7500 miles on it and I've been mostly running the MPT 93 PRX for the past 3500 miles.

Your description of your truck is a mirror image of mine. I’m buying these plugs tomorrow.

 

[NORCAL SS]

These spark plugs don't last 100k miles? Why not?