I searched, tried a couple different words and couldnt find a direct answer. what is your opinion on spark plugs? What do you think is the best?

 

Just get OEM. Unless you're running nitrous or some kind of forced induction.

 

What is the application?

 

stock.

oem, alright. I didnt know if there was any REAL gains in performance or better fuel economy by going aftermarket.

 

No, there shouldn't be any measurable difference between the brands, especially at our power levels. What is important is that they are gapped properly.

 

Ac baby!

 

stock or oem with or without nitrous. i don't know why everyone says to go cold on the plugs when on the bottle with the 2.2 it's a waste of money and time.

 

So until what power level are the stock plugs good to?

 

their fine for a 75 shot on the 2.2 and that's on 87 octane. on 93 octane with the tune it's still golden but much more so.

 

And the injectors are fine up to that point as well? It seems that those would have a pretty high IDC at that point.

 

i know ir un stocker on my set u, but i dont have anything special, full bolt ons...and with a 75 shot i recommend 1 step colder plugs, but for n/a with no type of f/i(s/c, turbo, cheater spray) stick to the delco iridiums, 41-103 is the part #

 

i put 25 bottles through this bitch on stock plugs and it never ever skipped a beat. as to the injectors it don't matter cause your fuel supply is being pulled from the rail itself which does not effect the injectors duty cycle. and to answer the unasked question the feul pump holds up just fine.

 

It's getting close to tune up time for me so I ordered the NGK laser series plugs to try them out. I'll let you know how it goes when I change them

 

so why do people buy ngk lugs and bosch plugs do they offer any gain in performance

 

i tried ngk cold and wasn't happy with the dd performance so i swapped back to stock and never looked back.

 

Because they believe the ads, or their buddys brag on em and talk them into wasting money. GM spent time and money on research and developement to find the right sparkplugs for these engines -- do you think the aftermarket will actually spend big bucks to try to come up with a better sparkplug? They'd never make a profit or their plugs would have to be really expensive after proving the difference.

I've run street and mildly modded cars on the dragstrip and found the factory plugs run just as good as the aftermarket plugs. Never was any faster with the "performance" aftermarket plugs -- and they always cost more! Wasted time indexing the plugs too and that didn't provide any better times down the track either.

 

Bosch plugs are **** and the I've heard a lot of good feedback about NGK. They cost the same as OEM so I'm gonna try them out.

 

NEVER BUY BOSCH PLUGS!!!!!!! they are absolute junk. they foul out very quickly.

personally, i love the ac delco rapidfires. i did a two year test with some spark plugs in my 97 saturn sl2, and found the rapidfires brought the best, most consistent gas mileage, held up the best, and had consistent performance.


performance wise, i believe the best is probably going to be a basic cooper plug due to lowest resistance. is this going to add power? no, but at the performance stand point, it out performs. but it does have a lower melting point the other electrodes.

 

Finally installed the NGK Laser Iridium's. So far so good

 

Bosch Platinum Iridium +4 plugs are perfect. I have had them for a while now and they make it run excellent.