[Three20i]

Hello, everyone:

I've noticed that my 320i gets a slight shake for a second at idle occasionally and I am getting misfire codes — I figure it's time to have the spark plugs changed as I have put almost 43k miles on the car since I bought (purchased at 37k) and haven't switched them out yet. I've also done quite a few mods which probably doesn't help.

Here is my current mod list:

Intercooler
Intake
Downpipe
Muffler Delete
E30
JB4 Stage 2 (260whp off this tune alone)

Point is, with the 320i coming with 180hp from the factory, these mods have brought a huge increase in power. What would be your suggested spark plug gap? If I'm not mistaken, the 320i stock gap is the same as the 328i (0.03in or so). I haven't experimented much with smaller gaps, but I'm sure your input will help with those decisions. Don't want to gap it too narrowly.

Thanks for any insight you can provide.

[Mr Podman]

If you're talking about NGK SILZKBR8D8S spark plugs,

NGK specifies a gap of .031" (0.8mm)






podman