MP Cobalt

iTrader: (4)

I was on the internet the one day and came across a video of the new E3 sparkplugs. has anyone tried them, and If you have how would you gap them or you just put them in and go?

08SSTCRD

Do not put them in your car.

Your engine is not designed for that kind of plug, and your performance and fuel economy will probably drop if anything. Stick with factory AC Delco Iridium plugs for best performance and reliability.

I'd only reccommend E3's for small engines (lawn mowers, weed wackers, ect) because they decrease the risk of fouling and allow for quicker starts. Those engines are simple and won't be affected by different spark plug designs the way a sophisticated car engine will be.

lilredg588

iTrader: (3)

My friend put some in her cobalt and the results have not been good.stick with ac delco or ngk is good too.that's what I'm runnin

Staged07SS

iTrader: (25)

This.

NGK's are best for our cars.

Fyi, the stock plugs that come in the SS/SC are NGK's. They are made by NGK for AC Delco. They are NGK IFR6V-10G Laser Iridium Plugs. Although, some of the earlier SS/SC models came with platnium plugs from the factory.

alleycat58

I've got a May 05 production model, mine were NGK Iridiums.

Staged07SS

iTrader: (25)

Ok.

Some of the earlier models came with platniums is all I was getting at. I didn't say they all came with them.

Zero6LS

ive got the e3 plugs in my car and havent had a problem. im happy i found this thread tho, i may go swap em out and go back to ac delco then.

alleycat58

Interesting to know. There was one car for sure that I've seen from the very first run of SS's (March 05), but it came with Iridiums too. Must have run into a shortage of them at some point and substituted platinums.

Staged07SS

iTrader: (25)

Yeah, very possible.

Hell, even the owners manual claims they come with platniums, haha.

alleycat58

Huh. I never noticed that.

Staged07SS

iTrader: (25)

Yeah, I thought that was odd.

I remember when I first pulled my plugs. I'm like WTF?! these are iridium!!

Typical GM.

coopercharge

iTrader: (4)

I still use my 2 steps colder coppers and they work great.

Staged07SS

iTrader: (25)

2-steps colder plugs for your setup is a bit excessive, but if they work fine that's all that matters.

alleycat58

That's what's in mine too.

coopercharge

iTrader: (4)

They work I get about 26 in town and 29-32 on the highway so seems to do ok. And I originally had a 2.6 setup instead of the 2.8 so that why the 2 steps colder.

LaserBlueCobaltSS

I put new ones in my car and went with the Denso IRIDIUM power plugs..the ones where in there where the ngk IRIDIUM plugs..

RyanJM

I only had 19 k last month when I bought my car added NGK 1 step colder iridium plus and got about a 2mpg difference. I also run NGK's in my cammed LS1 and work great there as well. NGK just makes a good plug for the money.