Looks like I'll be pulling plugs tomorrow and possibly replacing them all with a step colder and regapped. I'll let you all know what they were after I pull them....

I'm telling you, the more time I spend on this forum, the more and more that gets added to my list of things lol.

1780 miles. Jan 2012 build

 

Just replaced my stock plugs with a set of NGK LTR6IX-11's gaped to .032 this morning. We'll see how she runs with the new plugs.

Here are some pics of the stockers. I re-gaped them down to .035 a few months ago when this thread was started.

 

I just put back my stock spark plug from motocraft because my truck made missfire whit the ngk . Spoke to mike at 5star tuning and tell me to put it back because whit the ngk 1 step. Colder when i put the pedal at WOT at 5500 rpm the engine shut and start back at 1500 rpm ! No code nothing but mike told me to put back the stock plug and then the problem stop. Very good service crom mike thanks a lot

 

Do not text and drive lol. I have the ngk plugs and have had zero problems in 10kish miles. I have a set of autolites to put in but haven't gotten around to it. I have no cut out issues at redline.

 

Sorry i am from montreal my english speaking are not perfect

 

In that case. Great job with the English.

 

Thanks lol

 

stock plugs gapped down to .032 from .045 here.

different plugs are not needed, but gap definitely needs to be checked as all trucks vary.

see link in my sig for more info.

 

Running Denso's gapped at .034 and am loving it.

 

Checked mine yesterday.
All 6 were .039.
Changed to .032.
Haven't focused on whether my idle has smoothed or not. I thought it was already pretty smooth but a coworker who also owns an EB said it felt rougher than his.