Rep Power: 528

I thought we were supposed to use IK20, but someone else said IK16s might be better. Are they too hot or cold? Are they better or should I stick with IK20's.

IronFist

 
Rep Power: 0

IK20's are the correct heat range plug for our engines in stock form.

Edit: IK16's are colder; meant for larger 4 and 6 cylinder engines.

 
Rep Power: 528

Thanks, that's what I thought. Just making sure.

IronFist

 
Rep Power: 419

No no no!!! IK16's are hotter! Look here: How to Identify DENSO Spark Plugs

I did some research on this and it seems that IK20's are a tiny bit colder than what is optimal for our engines. The IK16's are a tiny bit hotter. Running either one is fine, but the IK20's are better for a lightly modified engine. If you plan on getting a turbocharger, or you use nitrous, or you push the engine hard every day then IK22's are a good choice. They're not only "colder", but they have a smaller gap. Look here for more information: Spark Plug Specifications

 
Rep Power: 528

Uh, does an intake count as a "lightly modified engine?"

Thanks,

IronFist

 
Rep Power: 368

I'll go with the 20 either way, just for the fact that u might get something later on.

and for the fact that it seems to work better for spirited driving. thats my guess anyway.

 
Rep Power: 0

[IMG]i/expressions/laugh2.gif[/IMG][IMG]i/expressions/laugh2.gif[/IMG]
Yeah, you're right, that was what I meant and it came out backwards. Anyway, yes, if your engine is stock to slightly modded, stick w/ IK20's.That would mean if you got i/h/e and maybe even a modded ECM, since even then the igniton/spark maos are not radically changed.

 
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I got mine off the gbc and requested IK20 plugs. They sent Ik16s. They said that one of the guys running the gb tried both and had much better results with the Ik16. I can definately tell a difference. The car seems to bogg for a sec and then accelerates smoother and more fiercely than before. They have definately helped acceleration. Also, my mpg seem to have gone up noticeably. Overall, most definately worth the 48 bucks.

I am only on my second tank of gas since installing them. 1st tank was pedal to the medal to get them burned in. LOL. I am about to fill up and have gone 375 miles since I filled up. I normally get 330 or so. I have been driving the same routes and in the same conditions as always so not much variability. However, my gas gauge does get a little screwy from time to time, so I will have to see how much she holds tomorrow.