total newb ? about running lean/Rich

[Mitsu725]

i just got a 3" exhause from the dp back and like 2 weeks before i got it my sparkplugs just like fouled for no reason and i put new ones and they fouled again and i was wondering if it was because it was running to rich or lean, well what kind of device could i get to see what my fuel mixture is and all that i know about the apexi computer device but does that show u ur values??

 

[98spydert]

Yes a very rich condition fowls plugs. What plugs are you running? You should have NGK BPR6ES plugs, only $10 a set at Autozone.

Apexi "device" doesn't show any values. You need a logger -> pocketlogger.com

In order to see your true air fuel ratio you need a wide band O2 sensor kit. From $400 up.

 

[98spydert]

What other mods do you have?

 

[Mitsu725]

im running Br6es plugs, i didnt get the bpr whats the difference, i think i should trying running the BP or BR7es what do u think??

 

[98spydert]

I don't even remember what the "p" stands for but the number(heat range) is the important part when it comes to fouling or breaking from too much heat or too little.

 

[doug]

The "P" means projected tip. Mitsu, if you wanna drop by the house sometime, I have some extra NGK plugs you can try to see if that helps any.