As in a previous thread I recently picked up another bike. It's an 07 FXSTD with 26k kms. Bike has cobra drag pipes, screamin eagle tuner and was a Hypercharger R (now a SE stage 1 intake). I started tearing into the bike for the winter to do all the fluids, belt, brakes and a few other things. I pulled these out this evening as I had a spare set of SE plugs laying around new in box and decided to put them in.

 

Dont buy chrome shet, buy an AFR meter.!!
No one here, no one on this planet can diagnose plugs over the internet.
For instance- was it idling B4 you removed them?
Well, - then that is what you are looking at, the plug heat range, etc at idle.
That is probably not the range you want to know about..
To do a plug check the old school way is a circus and takes many, many runs.

 

Noted thanks. And what is chrome shet lol

 

Most will spend an exuberant amount of cash for biker trash that will not ever make the Bike better.
As in "Do these real live imitation chrome rivets painted on make my **** look better?
See?
Buy an AFR unit.
You will ten times happier and a 1000 times smarter.
You will know what is going on at any load at any RPM

 

Perfect for a FI computercontrolled system. Mine have looked like that for 50K. Be sure to check the resistance between them an OEM Harley Branded. Bet they are about twice. However, couple experts on here says it does not matter but the ECM measures and controls spark knock that way. If you do not nail WOT a lot, it hurts nothing. I have run the last two sets NGK. Only third set of plugs in bike. I never WOT at a gray70 years however.

 

plugs look fine

 

 

Oh Matt, You're just mad cause you don't have an AFR

 

Plugs look fine but gap appears to be a bit wide; maybe the angle of the camera?

 

I sure do, ghetto-fab taped to my handlebars right next to the EGT gauge.