Just got the car, figured a tune up was in order. I ordered coils and plugs.

Pulled coils, they are all .09 revision, no cracks. You guys think I should return the new coils I purchased ($300ish)? Looks like .09 came out in 20012 that would mean about 20-30K, at the most, since they were replaced.


Now the plugs were pulled, they look pretty nasty, they are the stock Beru 14 F-6.

I ordered Bosch FGR6KQE, they are quad electrode. This is a turbo, Pelican, autozone, advanced auto says they are for a turbo. Alot of posts for "best spark plug" do not seem to clearly state if its a turbo or not. From my last hour of searching I see that they are not for the CTT, they are for the S. This is the problem.

I hope there is a solution:

I have no problem not staying with the stock Beru, mostly because I dont want to pay stealership prices, and I cant find them locally.

I have seen a handful of NGK's thrown out as an alternative:
BKR 6 EGP
PFR7Q

Also seen some Denso plugs highly recommended.



Now the problem is finding them locally so I dont have to put everything back in and wait a few days for plugs.
This is what Ive found locally:

NGK 2667. BKR7EIX--best bet?
NGK 6418 BKR6EIX-- warmer best bet???
NGK 7963 PFR7Q--- good bet?
NGK 6962 BKR6E
NGK 7092 BKR6EGP



Denso IXU22 5308 Iridium Power; Gap .035---- good bet?
Denso 5304
Denso 4504

 

Great now more confusion

This NGK search gives me 2667 BKR7EIX, 7963 PFR7Q
http://www.ngk.com/ngk-aut-c1411.aspx


Another search method on NGK's site gives me a warmer plug , 6418 BKR6EIX
http://www.ngksparkplugs.com/part_fi...t.asp?mode=nml


FML The car is in the garage for the last two hours while I figure out which plug.

 

I just sold my cayenne I have 8 brand new Denso iridiums Ill let you have at a great price. Let me know if you are interested

 

The 4-pronged plugs are incorrect for the Turbo. To quote Porsche's own literature on the subject, "The use of glide spark plugs is not possible especially with turbocharged engines, since ceramic nicks can be caused on the insulator tip by higher combustion pressures, which in turn can result in reduced change intervals or premature failure of the spark plug."
"Glide spark plugs" refers to the spark path of the 4-pronged plug, which "glides" across the insulator to the ground electrodes.
The Beru 14F6 plugs are correct, and NGK BKR 6 EGP plugs will also work. The Bosch plugs are incorrectly listed, and while they may work, they are not ideal.

 

And the actual literature stating this is attached.

 

That's the one. Thank you, spooltime!

 

So , as an alternative to beru, what NGK plug can we run?

 

I put in NGK 2667 BKR7EIX, $8.50 at autozone
but I could have put in 6418 BKR6EIX as well, the store that carried those was a bit further away.
I got both of those numbers from NGK's site

Appears you can also run NGK PFR7Q, and Denso IK20, but I have read that IK22 would run just fine as well.


I had a quick dialog with a pelican parts rep, who checked with Bosch, and Bosch said thet the 4 prong was correct. So I sent him the Porsche literature on why it is not correct. He emailed me back yesterday stating that they checked with Porsche and the Bosch plugs are indeed incorrect. So out of all this, I made a difference Hopefully this saves someone else from doing research, getting grease all over his computer mouse on a Saturday afternoon.

Either way, it just goes to show that when people post facts about these cars, they need to include which engine they are referencing. I came across a handful of rennlist/tech posts that said to go with the Bosch FGR6KQE, and when I saw them on Pelican... I said "great, this is what I need".

Thanks for the help.

 

For years I have been using the recommended OEM Beru plugs when plug replacement was due.
Never had an issue with them what so ever.

 

What most of us have a problem with is the price. We all well know that with a Cayenne things will be expensive but there is no reason to OVER pay for something as simple as a spark plug.

 

I agree, I would have happily ordered the OEM if it wasnt 2X+ the price. Its the principle of the matter But then again, what good is a cheap price if the wrong thing shows up?

 

I use the $4 ngk platinums and they work great. I could tell no difference between those and the Beru. Those NGK do not last 100k miles, but considering it takes about half an hour to change them its just not worth the extra coin.

My experience is that the iridium plugs dont really work better, only last longer in harsh enviroments. I'm talking 150-200+ hp per liter.