Boosted06SS

I searched but didnt come up with what I needed...
Anyway Im running a 2.7 pulley with 60lb injectors and I am looking for a the best spark plug out there for our cars so leave your opinion to help me out with my choice.

thanks y'all

TVS_SS

basic copper eletrode plugs will conduct the best

Platinum will last longer (and you wont really notice a difference in power)

Basically, any decent plug should work fine. Anyone who says one plug "significantly" outperforms another for your application is BS'ing you (mayben even themselves too)

cobaltss12

I happen to disagree with the last post. I posted on this at one point in time but ill post again for ya.

The best plugs out there for our cars, being supercharged, are copper plugs. Iridiums with last longer, but they do not produce a quick spark, neither to Platinums. I was instructed by a local shop, Alamo Racing, to use copper NGK's. The owner is a friend of mine, and he has a 2004 Evo with all kinds of mods. Hes using a Whipple turbo, with very high compression and boost. He said for anything with forced induction, you need a quick spark, and a hot one to produce the necessary spark to burn off all the air/fuel mix.

He suggested to me that I buy the NGK copper plugs, at your local O'Reillys or Auto Zone or auto parts store, and gap them between 0.25 and 0.35. For you, using a smaller pulley, same as me, 2.7, I would gap them at 0.28. I gapped mine at 0.28 and ever since, I can tell a lot smoother acceleration and you seem to go through top end gears a little quicker. The better the spark, the hotter the spark, the more air/fuel is burned producing more power.

Ask ANY real car guy, or shop, and they will tell you that ANY forced induction car needs copper plugs and to gap them lower to produce a quicker spark!

Hope that helps ya!

2K5SS/SC?

ZEX 82003 plugs FTW! I put these in like a few on here recommended, and they are top notch. I had the NGK IX's gapped at .40 and my car ran like ****. The stock plugs didn't help at all either. I slapped in the ZEX plugs, and I got back the power I was missing. The car pulls a lot harder and a lot smoother as well. Definitely recommend them to anyone looking for a great plug.

Matty

I agree.

1gmfanatik

Hmmm...Intruiging..My car has been idling pretty rough lately, I wonder if I need to swap plugs or re-gap em. Their set at .40 now with the 2.79"

2K5SS/SC?

I think the .40 gap is too big. My car ran like crap with the .40gap. If you can regap, go to .35, if not the ZEX plugs are where it's at man! Just install them straight out of the box!

CobaltSS313

I have the Zex plugs and my car is still acting funny. I think im going to by some NGK's, copper, and gap them to .30 and see how it runs. I think the Zex plugs are gapped to .35?? Does anyone know the part number for the NGK's?

lsjwannabe

iTrader: (1)

i did not no whipple made a turbo?

IMADreamer

Where's the guy who made the video on how to change your plugs and then at the end says "and remember, spark plugs aren't a performance mod." No truer words have ever been spoken.

Anyway, I have personally had some issues with the NGK copper plugs because it seems they wear out quicker. I would get about 15k miles on them and then have to clean them. I haven't tried them on my Cobalt yet and I don't intend too. I may give the zex plugs a try.

firestorm

i put in the iridium ngk's. the electrode is a lil "pin" almost, and i broke one trying to gap it. it came at about .030, so i bought another fourth, and put them in, when i go for tuning, that may all change......