spark plugs '04 (basically '02+)
Intermediate
Joined: Jul 2012
Posts: 43
Likes: 1
From: Birmingham,Alabama
Dinodog and Mark I, where are you guys looking up (cross-referencing) the NGK plugs from? The number I pulled was from the NGK web-site. I was actually very surprised that they had the 40th AE car listed.
Looking at Pelican's site, they only list a plug difference for Turbo vs. normal m96 motors. No difference listed for the x51 package.
I just looked on the ngk website for plugs for a non-40th AE car. Interesting that there are a lot more plugs listed (6 choices) than for the 40th AE. Also, if I recall, all the plugs for the standard m96 are colder plugs! (6 instead of 7 for the 40th AE car -- lower number equals colder plug right? or do I have it backwards?!)
Hmm, apparently higher number = cooler plug. Which makes sense, as I'd assume the x51 motors would run hotter. http://www.ngksparkplugs.com/tech_su...k_plugs/p2.asp
Looking at Pelican's site, they only list a plug difference for Turbo vs. normal m96 motors. No difference listed for the x51 package.
I just looked on the ngk website for plugs for a non-40th AE car. Interesting that there are a lot more plugs listed (6 choices) than for the 40th AE. Also, if I recall, all the plugs for the standard m96 are colder plugs! (6 instead of 7 for the 40th AE car -- lower number equals colder plug right? or do I have it backwards?!)
Hmm, apparently higher number = cooler plug. Which makes sense, as I'd assume the x51 motors would run hotter. http://www.ngksparkplugs.com/tech_su...k_plugs/p2.asp
Thread Starter
Racer
Joined: May 2010
Posts: 466
Likes: 53
DONE!
Long story short, I ended up putting the NGK BKR7EQUP in my car. This according to NGK is specific to the 40th AE edition (x51?). I even called and talked to NGK about it.
Looks like the plugs were never replaced in my car. They looked to be the original Beru plugs.
Did the Gundo Hack as well, went with 1.5". Thinking maybe I should have went up to 1.75 or 2"!
Definitely a "burble" at startup. The exhaust noise is more for the outside than the occupants of the inside. Oh well. Wanted a little bit of noise, but not too much for fear of the noise police at Laguna.
I'll upload some pictures later on. Need to take a shower now!
Long story short, I ended up putting the NGK BKR7EQUP in my car. This according to NGK is specific to the 40th AE edition (x51?). I even called and talked to NGK about it.
Looks like the plugs were never replaced in my car. They looked to be the original Beru plugs.
Did the Gundo Hack as well, went with 1.5". Thinking maybe I should have went up to 1.75 or 2"!
Definitely a "burble" at startup. The exhaust noise is more for the outside than the occupants of the inside. Oh well. Wanted a little bit of noise, but not too much for fear of the noise police at Laguna.I'll upload some pictures later on. Need to take a shower now!
Rennlist Member
Joined: Nov 2009
Posts: 576
Likes: 46
From: West Virginia & NRW Germany
Yoda, Sounds like everything came together perfectly (fresh plugs, exhaust mod results = increase sound on the outside, quiet on the inside). Live large and enjoy! All the Best!
Thread Starter
Racer
Joined: May 2010
Posts: 466
Likes: 53
Here are some pictures (and video if it works):
What's this cable for? This is on the driver's side under/beneath the taillight.
image.jpeg
The reason I took everything apart! NGK vs. the OE Beru.
image4.jpeg
No muffler!
image1.jpeg
Gundo Hack.
image2.jpeg
Back on the car!
image5.jpeg
Folks, what's the easiest way to upload a video?
What's this cable for? This is on the driver's side under/beneath the taillight.
image.jpeg
The reason I took everything apart! NGK vs. the OE Beru.
image4.jpeg
No muffler!
image1.jpeg
Gundo Hack.
image2.jpeg
Back on the car!
image5.jpeg
Folks, what's the easiest way to upload a video?
Last edited by yoda888; Mar 9, 2013 at 12:35 PM. Reason: Video doesn't work!
Thread Starter
Racer
Joined: May 2010
Posts: 466
Likes: 53
Thanks!
Yes, it does feel good to accomplish the DIY. However it took a lot longer than I had anticipated. Putting everything back together was a lot quicker!
I'd be interested to hear a 996 with bigger gundo pipes to see what the sound differences are. Mine is much more subtle. Wonder if my wife will notice!
On cold start she'll notice for sure. 
You can't tell when you're cruising on the highway for sure though. Only when you get on it!
Yes, it does feel good to accomplish the DIY. However it took a lot longer than I had anticipated. Putting everything back together was a lot quicker!
I'd be interested to hear a 996 with bigger gundo pipes to see what the sound differences are. Mine is much more subtle. Wonder if my wife will notice!
On cold start she'll notice for sure. You can't tell when you're cruising on the highway for sure though. Only when you get on it!
Advanced
Joined: Oct 2008
Posts: 75
Likes: 0
From: Fredericksburg, Texas
I was on my way to the mechanic Thursday to have a leak down test done on my engine since I'm going to sell the engine, on the way the car started running really rough, then the "engine check light" came on. Ugh! Turned out that the original plugs at 64,000 miles were toast. Since I was already paying for the leak down test I had only to pay for the plugs.
Rennlist Member
Joined: Nov 2011
Posts: 2,471
Likes: 362
From: DFW
I was on my way to the mechanic Thursday to have a leak down test done on my engine since I'm going to sell the engine, on the way the car started running really rough, then the "engine check light" came on. Ugh! Turned out that the original plugs at 64,000 miles were toast. Since I was already paying for the leak down test I had only to pay for the plugs.
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