PhatManBUD

What spark plugs should i used now, since im boosting and im broken in?

All stock leading?

or

Stock leading and trailing?

or

Something else?

Also, does it make a big difference running all leading plugs vs stock leading and trailing?

BoostedRex

Search works wonders! It also depends on your setup. What turbo are you using, what kind of power are you shooting for?

PhatManBUD

I know i tried searching like

"All leading plugs"

"Spark Plug Setup"

stuff like that. nothing answered directly. Basically all i wnated to know if im running single turbo should i change my sparkplugs to all leading or something? I have a crane hi-6 ignition amp. I just wanted to make sure my ignition is sufficient. Right now on this turbo im aiming for 300-350 whp. But in the future 400-450 whp.

LUPE

use all stock 9's

PhatManBUD

so thats the Bureix9s or whatever right? k gotcha

RotorJoe

Also here is a great link about spark plug heat ranges.

http://www.ngksparkplugs.com/techinf...000&country=US

PhatManBUD

great, thanks

i think ill be changing out my sparkplugs to all leading this weekend. Break in is over with and its about time for my 2,500 oilchange. still on same plugs as before.

RotorJoe

You mean all trailing, the 9's

It’s a colder plug (smaller insulator) so it will dissipate the combustion chamber’s heat faster.

PhatManBUD

oh really? ok all the trailing ones. ill make sure to remember that. someone todl me all leadings WTF.