This was a PM to me from Karguy sometime ago explaining why the NGK plugs are necessary.

Enjoy!

 

Good post!!!!

Now I know why I felt a small drop in low end with the Bosch +4's. They hold to much resistance.

 

Why would he have to PM you that info?

 

Some time ago I was going to buy some plugs, and was asking bout various brands. He PM'd me this message, and he also had some new NGK's to sell me....

 

Hard to swallow. The coil fires through ground? Huh? The polarity of the vehicles electrical system doesn't change at will.

I'd be interested in learning more about this...

 

You sound like an electrical engineer! Enlighten us!

 

Are you telling me that my car would peform better with NGKs instead of my current Denso's?

 

That is what EVERYONE who knows anything about plugs is saying. Including the guys running boost and NOS. They all agree on the NGK's, though some are using one step colder plugs.

 

Could that explain why I run flat 17s with HAI and rear section muffler?

 

Could be. I'm really trying to get to the track to see what I will run with my FCP Intake and NGK's. I ran my 15.62 with Bosch +4's.

 

Not quite. But I fix cars for a living, and I just don't understand what the guy is saying. The ground electrode of the spark plug grounds to the engine block through the threads, or body of the spark plug. When a coil fires, the spark goes through the center of the spark plug up to the center electrode and then jumps to the ground electrode. The current then travels through the engine block, through the ground strap then to the negative side of the battery. There's no way to reverse that flow - you would get a short.

I think it's a line of BS the guy filled him with. There are probably other reasons why NGKs perform better in Maximas.

 

I never thought of that and what your saying makes a lot of sense.

 

Flat 17's ohh man if your running something like that it might be a little more than just the plugs check your Knock Sensor, and possibly your fuel Filter. I Run a 15.4 with a HAI and a Crappy knock sensor. It was 62 degrees at the track then also. I did just buy the new NGK's There expensive but they are cheap insurance. Brian

 

I thought stock was single platinum. It sounds like he is trying to explain how a coil for 2 spark plugs work like in gm vehicles. But our maxima has one coil for one plug.

 

my car has been running like sh*t recently and i got a ecu code of cylinder 3 misfire. had my car since 84,000 miles and never changed spark plugs since (113,000)...doubt guy before me did either. Just ordered some from tustin nissan today for 8.80 a piece along with a fuel filter. Hopefully this solves all problems

 

he was not exactly neutral is his analysis.

 

You know what? Doesn't much change the truth does it? Truth is, nothing out there performs like the NGK's in the maxima. NOTHING. I would wager that none of the most respected members here run anything other than NGK plugs. SO, as far as I am concerned, you can you take your open mouth smiley and shove a stick in it!

 

This is only true on cars that share a coil to 2 spark plugs, like a Taurus SHO, or any newish 3.8 V6 by GM. It is called something like a "Waste spark ignition"

Look here:
http://au.geocities.com/ozbrick850/e...boschplat.html
http://shotimes.com/SHO3sparkplugs.html

Take Care,

 

This is completely wrong. Our coils have 3 wires, Positive 12V, Ground, and the triger sigal. The trigger signal according the the FSM is about +.5 volts. It never changes. The plug fires the same way every time. Whoever wrote the above statement obviously knows very little about basic electronics.

 

LOL, BS.

But the NGK's do seem to work better for whatever reason(but not that one). It would be interesting to do some track timings with the same Max with different plugs.

-RMB