[dzenno]

After last weekend when I did my intake valve cleaning the AFR imbalance that I was seeing on my car in the procede AFR datalogs is now gone and I mean GONE! What used to happen is with boost raised past 13psi and RPM above around 4800rpm to about 6000rpm I'd see the AFR curves split off and not follow each other and it was always a case where bank 1 would be leaner by 0.5-1.0 points than bank2.

I did actually 2 things on the weekend:

1) Cleaned intake valves (decarb as in Mr. 5 thread)
2) I'm now running a 2nd crankcase vent off the top of the valve cover (see my PCV thread)

Which one of these do you think helped resolve this issue? I could cap off the additional vent and see if the issue returns but not really eager to see it come back again

[Clap135]

Neither. Keep logging it will come back

[dzenno]

Originally Posted by Clap135

Neither. Keep logging it will come back

we'll see, why so pessimistic?

[Clap135]

Because nothing you did would affect af ratios. Did the weather warm up by any chance?

[dzenno]

Well if the PCV was restrictive and causing crankcase pressure to push oil past the rings/seals there's one idea how oil leaned out a fuel mixture..now with more pressure relief it may not be happening anymore...wouldn't be hard to test

[domrep]

Unrelated, but you should offer intake valve cleaning services. I'm sure lots of the locals would be happy to pay you for your help

[dzenno]

Originally Posted by domrep

Unrelated, but you should offer intake valve cleaning services. I'm sure lots of the locals would be happy to pay you for your help

honestly all the respect for this cleaning job goes to Ivo and his shop...really, I just helped with scrubbing

[magha]

nice dzenno u track ready yet? just got my summers on so am most probably gonna try next week

[dzenno]

Just need to put my line lock on and the m3 rear suspension bits and I'm READY! can't wait!

[Joe@TopGearSolutions]

I'm curious how much the PCV effects it if anything. I say run the test!

[dzenno]

Originally Posted by Rob@TopGearSolutions

I'm curious how much the PCV effects it if anything. I say run the test!

I'll run a few tests on my way home after work today and see what's going on..this'll be a few more with the extra vent open on top of the ones that I've done up until today...then I'll close the vent and run a few tests and see what's up

[secretsquirrel]

subscribed

[Tzu]

Where is Ivo's shop in the GTA? If I told him what I wanted, would he remember from you? Do you recall how much it was?

[dzenno]

North of 401/Dixie...6741 Columbus rd unit 11 rear of the building...he'll know for sure he just did mine and another member is getting it done Monday I think...$300 but check with him...takes about 4.5-5 hours to do

[Ilma]

Originally Posted by dzenno

North of 401/Dixie...6741 Columbus rd...he'll know for sure he just did mine and another member is getting it done Monday I think...$300 but check with him...takes about 4.5-5 hours to do

$300.....Really?

I'm in.

Would you mind pm'g me the shop name?

[dzenno]

Really pm-ed...

[Maddawg58]

dzenno......can you post a screen shot of your log showing the split

[dzenno]

Doesn't happen anymore but here it is, bugged me for a few months until this past weekend:

Before, showing split:



Now, no split and higher boost:

[MKE_M3]

hmm... so your saying cars can have mechanical issues? Not EVERYTHING is tune related? You just bleW MY MMMIIINNNDD!!!!!

[Ilma]

Originally Posted by dzenno

Really pm-ed...

Much oblidged!

[dzenno]

Originally Posted by jdemetry

hmm... so your saying cars can have mechanical issues? Not EVERYTHING is tune related? You just bleW MY MMMIIINNNDD!!!!!

ummm.... YAAAA!

[DaFish]

Originally Posted by dzenno

North of 401/Dixie...6741 Columbus rd...he'll know for sure he just did mine and another member is getting it done Monday I think...$300 but check with him...takes about 4.5-5 hours to do

I am going to use Ivo too for my rear end work (LSD, bar and maybe control arms)... really nice guy... the guy has pretty much has rebuilt dzenno's car !!