So, i thought i would be able to read my spark plugs and see what was going on. I guess not. Can anyone help me out? My car has been getting richer and richer (as indicated by my uego) I used to be running 12.5:1 from 0-5psi and then 11.5:1 from 5-14psi. Now, i am getting low 10's under boost. Cruise used to be around 18:1 and now its around 14:1. Idle used to be around 13:1 now it is high 10's/low 11's. Sometimes my idle afr just stays at 10.0:1. I would think that if the car was running this rich at idle, it would be sluggish to rev and you would smell gas in the exhaust. Neither is true. So, i am thinking maybe a problem with my uego. The sensor is at the end of the down pipe right before the flex piece. Here is a picture of my spark plugs.



(god i love macro function on cameras)

 

Oh, this is after about 300 miles and some boost while passing or owning some douche on the interstate.

 

Why does it look like the first three plugs have an almost non-existent gap while the 4th has a large gap? Shadow?
Rich mixture at idle makes for good throttle response actually. 10:1 is a little over board but it does help some when compared to a much leaner 15:1 at idle. Atleast that's been my experience when accel enrichment isn't being used.

 

I just took a little cruise in the car and it is around 10:1 all the time. Much of the time, the uego is reading 10.0. Under full throttle, the car bucks, and burps, and struggles. Something has changed. I haven't messed with the car any. The car was running perfect. I put down 219whp a week ago and now this. I am a little confused.

 

Logggggggggggggggggggggggggggggggggggggggggggg.

 

lollllllllllllllllllllllllllllllllll !

 

Because plug reading doesn't work unless you pull them right after a WOT run.

 

yeah, yeah. I should've known you were going to say that.

 

well then!

it rolls down stairs and over your neighbors' dog.

 

uhh wess i am thinking your eugo is out of wak
Most Ms users have issues getting aem's to interface. I would recalibrate and then check the WB grounds to make sure you aren't getting voltage offsets.

 

well, i figured it out. The wire going to my AIT sensor was broken. I guess thats what i get for getting a connector from a junk yard and using the wires that were on it. I figured it out because i went into megatune and the manifold air temp said 43* now that i think about it, the car ran better at night when it was in the 50's and ran like **** today when it was around 90.

sorry for bad punctuation. I am on a 7" laptop.

 

glad you found it!

win for you.

 

and why are you running a 6 heat range? but they look great IMO, i dont see any detonation.

 

because a 6 heat range for a 1.8L is one step colder

 

i see said the blind man

 

Yep, anybody have any input on whether 6 is cold enough? Should i go with 7?

 

is a good plug to have.

 

what is? the bkr6e?

 

yeah, you technically want the hottest plug you can get away with.

 

I see, so in other words, since i have no knock with a heat range 6, there is no reason to go colder.