At idle my spark advance goes wild, jumps between -5 to +20 not only does the RPD show this, but I can hear it in the tone of the engine.

What would cause this? I recently changed my plugs and it seemed to help a little but only for the first few days

 

Does this happen when you first start it up? (cat warm up) Mine does the jumping for about a minute then stops.

 

No any time, except while the fans are running.
Also i have no cat warm up cycle

 

my car doesnt seem to go into cat warm up anymore in this -25 what gives

 

Are you tuned? If so, who's your tuner?

 

BYT is my tuner, so I wouldnt expect it to be a tuning issue..

 

lol you'll receive different timing all the time its not gonna stay one set *

 

Well I never had a issue till frofstofalls car and him and I ended up going back to a older file but loading all the old perameters I changed and it was fine. As if the file was corrupt. But there are a lot of factors that can cause this. Dirty maf, condensation on maf, fuel, heat soak, purge valve, ect. But you won't always have the same timing at idle. It'll fluctuate a Lil.

 

If its a noticeable bounce then have tuner check your logs. Like James said, we went back to square one. I think my DALs were outta wack and I also think my laptop is messing with files but that's a whole other thing.

 

Lol your laptop is analy challenged haha

 

Coulda been you. You're the one with the hard drive that took a crap, not me.

 

:'(... Haha it didn't. I found all my ****. It sent it all to the other users but made all the files hidden...... I have my brother and law help me out. We went into the hard drive and looked and.found it .

 

derp

 

It doesnt fluctuate like one place one time and another at a different time, it bounces. ALL the time so it shouldnt be fuel, im just looking for a place to start looking.
As far as loading an old file, I cant get in touch with nick on his website, phone, or here so i cant do that.

Do you think it would be condensation on the MAF if it does it in 90 degree weather the same as it does in 10 degree weather? It happens the same in both

I could clean the MAF

 

probably an EVAP issue. mines doing this but its because my EVAP solenoid is stuck open. your afr's should also be around 17 or more at idle.

 

Did you throw any codes?

 

Did it just start happening? How long since your last revision?

 

Its been happening for atleast 8 months, No revision to the tune, cant get in touch with him

 

It started after you got tuned though right?

 

Yeah but not right away, took some time

 

You should see about having another tuner look at your tune.

 

I dont know a tuner in the north east better than BYT

 

Do you own the HPTuner or do you have to meet up with him? If you don't own one, see if anyone in your area does then ask them if you can rent it or have them help you get remote tuned by someone. Thats what I would do.

 

I'm in hanover below york and can get ya someone whos just as good if not better and will answer you not just disappear like some people! lol.

 

We're seeing a lot of this, lately.