How often do you replace your spark plugs?

Post your info below.

Miles: ?
Spark Plugs: ?
Mods: ?

 

I change mine when they need to be replaced.

 

It's hard to say, it's all up to the plugs when there bad they are bad. I can tell you i use ether BPR7ES or BPR8ES with a .025 Gap and 22psi and lots of mods.

 

im still on stock plugs which have 17k miles on it. do i need to get them replaced when im doing 23psi with dynoflash @ 300whp?

 

still stock - 6000 miles Evo IX daily driver.

 

20k mi, 05 EVO, original plugs..

 

32,000 miles. I think i'm on my 3rd set of plugs or so, BPR7ES FTW.

 

You will have to use your best guess if you need new plugs or not but at $7.00 for a set of BPR7ES it's not much to pay just put some new plugs in it's only $7.00.

 

Im averaging about 5-6k miles on BR8ES plugs. Gap is set to .026-028.

 

I change them every 5k with the motor oil. BPU. BR8ES gapped to .026.

 

same here every 5k...

 

I change them out when I start to get miss fire :} Stock Iridium first 20K miles, then NGK BPR8ES for the next 10K miles with lotsa boost and Methanol (spike to 30 PSI and let it fall), I am on my second set of BPR8ES.
From now I I think I'll change them every 3 oilchange ~ 9K miles.

 

I change my every 5k. Using BR7ES right now but going to use BR8ES.

 

I have to change mine out every 1,500 miles or whenever it starts to misfire. Sometimes it does it after about 1000 miles. BR7ES gapped to .025 using HKS DLI 2 and Magnacore 8.5 wires.

I go through plugs very quickly for some reason.

 

That's not normal, is it? THere has to be something not exactly right somewhere.