Hey guys,
i was having misfiring while at idle, so i figured i need to change my plugs. Swapped in BUR9EQs all the way around. Now here is the intresting thing. The wear on my old plugs were inconsistant of each other.

Front Rotor Housing
Trailing = almost brand new, little to no wear.
Leading = Black and Wore

Rear Rotor Housing
Trailing = Black, very black...
Leading = White, lean...

So what do you guys think? I find it strange that i'm getting lean conditions with my leading plug on my rear housing, but rich conditions with the trailing. What could be the cause of this. So far the car is running pretty well. Boost feels alright... but i really need to ride in someone else's car to compare to mine.

 

Is your engine drinking coolant?
Are you using any fuel additives?
What kind / brand of gas do you use?
Are you using the stock oil injection?
If so, what kind / brand of oil do you use?
Are you using any oil additives?



-Ted

 

its eating a little coolant on start up, but the smoking stops after warmup,
no additives, using 91, Stock oil injectors and running minerial 20w-50. No additives...