"Performance" Spark Plugs

[CB7Nub]

Those "performance" spark plugs do they do anything well? My motor is mostly stock. For example would better plugs give me a faster turn on and fuel mileage, etc?
Or do you only see the effects of really good plugs if you have a somewhat tuned engine or the engine is made for higher end plugs?

[js593]

G-powers is all you need. V-power's are for stock replacement.

If your car is bone stock, and in canada, where we have 10% Ethanol, you should also look into the NGK Tech bulletin on fuel millage change with a colder plug.

[deevergote]

You don't need anything but the plugs that the factory recommends for your car. You will see no gains by using fancy plugs.

[mercyboy]

You don't need anything but the plugs that the factory recommends for your car. You will see no gains by using fancy plugs.

^^^ i agree....i just purchase Ngk iridium with my old replacement of G-power and i can tell they have the same in common..you only get that sudden difference if you didn't change your spark plug in like a long time.....

[deevergote]

Even the irridiums are overkill. The H22 only needs platinum, and I believe the F22 will do fine with a copper core.

[Accrdwgnguy]

V-powers work fine for me.

Just dont buy champions....lol

[CB7Nub]

Oh ok, so what do you guys think about changing the plug to one that's one heat rating lower? In Canada we have gas that's 10% ethanol, which is bad for our cars. Destroys fuel pumps and other fuel system components.

I read it off the NGK tech bulletin js593 suggested me to look at.
http://www.3geez.com/forum/showthread.php?t=60398

I also will be putting a air intake on soon enough.
But I know the difference won't be much but look what I found on Import Tuner when Googling.

Test 1: Champion Copper Plus. Costing you $1.49 each, these OEM-style copper plugs are about as basic as it gets. There was some debate as to whether or not they'd actually lose power over our two month old NGK coppers, but after three pulls they proved their worth, powering our B18B to a six-run average of 131.9 whp and 118.6 lb-ft of torque.

Test 2: Champion Platinum Power. While Champion makes no claims that these plugs will increase power, online outlets selling the product do. In theory, platinum is a more efficient conductor than copper and should improve combustion and increase power. When put to a six-run test, however, they brought an average power improvement of only 0.8 whp and 0.0 lb-ft of torque.

Test 3: Champion Iridium. Iridium is a favorite among many big-name aftermarket manufacturers, exotic car OEMs and enthusiasts looking for an extra edge. The center electrode of an iridium plug tapers to a point as it nears its ground; the idea being that it focuses spark energy into a narrow, more intense arc, thus increasing combustion efficiency. These plugs narrowly made it to the dyno at all-the first one we installed broke off in the cylinder head when we tightened it with the specified method of a half-turn past hand-tight. While the plugs' build quality didn't impress us much, they actually made some power on the dyno-2.9 whp and 1.1 lb-ft of torque over the coppers!

Conclusion: Swapping spark plugs can increase power output if the OE-recommended plugs can't ignite air and fuel at maximum efficiency. In modified engines-those with increased compression, forced induction, nitrous or water/alcohol injection-a substantial improvement can be seen through upgrading stock ignition system components. Engines like our N/A, stock-compression B18B do pretty well with the OE-recommended plugs, and frankly we were surprised to see any gains at all; a testament to the benefits of iridium plugs. While we don't agree with "big power" claims often promised by spark plug manufacturers, if they can do a better job of increasing combustion effi ciency, you'll see a few extra ponies and a slight increase in fuel economy. Our suggestion? If you're going to replace your plugs, spend a few extra $$ and buy iridium.

They just bs'ing? Because if it does make 3 more HP, I'd do it. Is it worth it for 3 HP, I'd say that's pretty good.

http://www.importtuner.com/tech/impp...ion/index.html

[deevergote]

Apparently some cars can benefit from plug upgrades. We really don't.

[alan lx]

I have done some reading and talking to people. Deev is right. If your motor is stock, don't waste your money on the expensive ones. Just buy the factory plugs.