These the one step cooler plugs for and Evo IX. I only ran then for about 400 miles when my car started running like crap. I figured that the Evo didn't need colder plugs so went back to oem.

Now I'm getting Spoolin COP kit and wondering if these still look ok to run at a higher gap, probably .026 or .025:

 

Uhmm that's only one plug! I wouldn't run that one.. looks like the arc is cracked..

 

All of them look identical

Arc is not cracked, I was just gapping them with pliers so its probably from that. I will take another look at that scratch. Thanks

 

spark plugs are a cheap way of maintaining your car, pep boys NGK BPR-7es for 2 bucks each buy 20 and switch em out every 2 oils changes if you are heavily modded.

 

yea, but Evo IX plugs are around $45 for 4. That's why I'm curious if I can reuse these since they only have about 300-400 miles on them.

BTW, here are all 4:

 

Really? Reuse spark plugs? Just get new ones. Wow

 

they look decent. the tops arent white so they should still be usable but if u start getting misfires time to replace

 

Is there some rule that you should not run spark plugs for more then 400 miles that I'm not aware off?

I put these in and my car was running rich, and that is why you see them fouled up a little. I'm just checking if they are too fouled up.

 

buy new ones, save yourself the trouble...

 

If you only had them in for 400 miles and took them out to check them I would think it would be fine to reuse them, then again I run the BPR7ES and they cost like $8 at o'reillys so I'd just change them. Hell I change mine every 3k miles when I do my oil anyways because I'd rather be safe then sorry.

 

400 miles? = brand new

 

I would also just replace them. Considering the amount of money in a car a spark plug is just a drop in the ocean. If the plugs come out they never go back in if you ask me. Its the easiest thing to change on the car and the cheapest.

Vehicle Wrap

 

Just like the rest. Its always a good idea to replace them once they're out.

 

Come on bro. u drive an evo not a civic lol =)

 

dont be cheap...save the headache and buy new ones...