I pulled my Stock plugs tonight with about 4 K miles on them

They were quite full of carbon and brownish

I have a shitty pic from my phone i can post

Mods are in my sig

Have you guys been swapping to a cooler plug?

 

I'm gonna switch to the NGK's, 1 step coolder I believe, a lot of people are not having any problems with them and are loving the switch

 

What are they switching to?

Need part number

So after some reading

6509s or 3787s what are better for High Boost levels

 

Most are running 3787 as am I

 

Stick with the stock plugs, just gap them tighter!

 

Take a pic and post it when you can. I'd be curious to see how they look, but generally speaking brown buildup is pretty much a "normal" buildup and usually means you are burning air and fuel effectively and efficiently (good a/f mix). You really shouldn't need to upgrade to a step colder plug with your current mods, but it really doesn't hurt anything if you did.

 

What are you recommending for a Gap on stock plugs?

Pic is uploading now

 

some guys like .030 but .032 has worked great for me

 

Apparently .30 is now the magic number.

 

 

the red looks as if you added a fuel additive or somthing or race fuel. About the carbon, i hardley see any, you will have some carbon.!!!

 

From what I can see they look fine to me. Just give them a quick hit with a wire brush, and gap them to .032

 

I was stuck in Reduced Power mode for a ride home after breaking the connector on my High Pressure fuel pump

Just had it fixed

I guess ill clean them up and check the gaps across the board, so stick with the stockers?

 

Stock plugs should do you just fine. Just check them at every oil change interval to be sure

 

.030-.032 is fine, you will see lil difference between the gaps.

 

Those plugs do not look normal. They look a little fouled. They look like they got hot as well.

Stock gap 0.035 works fine as long as you are not seeing over 24 psi. I run 0.030-0.032 in my car. Stock plugs 9K miles on these plugs.

 

Got any pics of what the necks look like?

 

Necks were fine

So re gap and leave the stockers or replace ?

Im seeing as much as 26 psi

 

... They look like they had a bit too much fuel dumped on them recently and then burned off, but definitely not fouled.

 

so if i'm tune and run a step colder, would my car run better? more power?

 

^^^^

Also wondering that

If i was to change which NGK has been decided to be better?

 

ngk 3787, its 1 step colder. but which 3787? there are couple different 3787.

 

Why (gap tighter)? Also, what gap then?
BTW, I tend to agree on stock plugs..mine have 11K now and car runs primo on HTP tune.

 

Plugs look fine..no carbon.
Check this link:

http://www.ngksparkplugs.com/tech_su...qs/faqread.asp


Normal Condition
An engine's condition can be judged by the appearance of the spark plug's firing end. If the firing end of a spark plug is brown or light gray, the condition can be judged to be good and the spark plug is functioning optimally



Dry and Wet Fouling
Although there are many different cases, if the insulation resistance between the center electrode and the shell is over 10 ohms, the engine can be started normally. If the insulation resistance drops to 0 ohms, the firing end is fouled by either wet or dry carbon.

 

I have the one step colder plugs