Hey guys,

I replaced my plugs again about a month ago. I then Seafoamed, and supposedly it probably fucked the new plugs. If I replace them, should I just get another set of Delco Iridums, or is there another kind of Iridums that I can run? I know many companies make them.. I've seen guys run Denzo's. They also claim "one step colder". Is there anything else I should look into, and is there any benefit to the "one step colder" thing? 2.4 auto, with bolt-ons..

Thanks!

 

Bump. Need to know asap.

 

Run the stock AC Delco Iridiums. Thats what the engine was designed for. Everything from octane rating to flame promulgation was engineered from the factory using those plugs.

Don't change heat ranges unless you're running boost or nitrous.

 

I've seen guys run Denzo Iridums. Still no?

 

Denso plugs are Toyota. No point in using them, you will not gain anything.

As said, stick with GM plugs. AC Delco Iridium.

 

I'm not saying I will gain or lose anything using them. I was just asking "if" they'd work.

 

GM 4 Cylinder engines are notoriously picky about the plugs you run in them. The Delcos are the safe bet. NGK's are also usually fine. Anything else is a hit or miss.

 

Yeah, the first time I put plugs in it, I used Platinums because I didn't know. Ran fine, but it definitely ran better when I went back to Iridums..