Can anybody tell me what spark plugs are good for my EVO X?

 

NGK Iridium, 0 issues for 3 years (changed them of course).

 

Or you can use OEM ones. Those will do you just fine, especially just for daily driving and occasional track use.

 

My car had NGK but thats all it said. Which ones are the OEM for the EVO? Sry for my ignorance im new with the EVO.

 

The NGK's are OEM. That's what I've used and I've never had an issue with them. I would stick to those.

 

Thank you.

 

You really only have two choices for the Evo X: OEM/NGK or HK$

The majority of people run the OEM/NGK plugs (exact same plug whether you buy them from the dealer in a Mitsu box or from a parts retailer in a NGK box). You'll be looking at about $50-55 for a set of 4.

Keep in mind the recommended service interval for spark plugs is 60k miles since they're iridium which is what I'd follow if your car is stock. I personally change mine annually though since I'm modified and have experienced a failure in the past.

 

Ok.. my car is slightly modified. When I look at the RPM I can see that goes up n down and then it gets stable when the transmission is in park. So I figured maybe its time to change spark plugs also I've seen that im wasting a little too much in gas.

 

When does the RPM fluctuate? What is your mod list? Are you tuned?

 

When idle its at 600 rpm but them some times it spikes up it doesnt shake it just spikes up. when i had my 350z i changed the spark plugs and it went away so maybe it could be the same?

i bought the car like 3 weeks ago and it has:

COBB HARD PIPES
COBB EXHAUST
ETS INTERCOOLER

and i do not know if it is tuned i think it is because on the side on one of my windows it said cobb tunning but i dont know if necessarly means anything.

 

Does the RPM fluctuation happen when the A/C is off, or only while it's on?

 

it does it when is on and off.. but it is not too bad it will only spike it to 700 rpm from 600 rpm