1G AFR questions

[Boostified]

Ok I was talking to a buddy and told him my afrs
Idle its between 14.2 and 15.2
3rd gear wot is 13.5
Let off is 11.2
I have the ngk afx gauge so I know its not just a cheap gauge.
And after I let off it still smokes. People say its a dark gray colored smoke. I can't hardly tell from being in the drivers seat. It only smokes after I let off. And it will backfire after I let off and that's when it puffs the smoke out. And I'm not talkin a lil bit. I'm talking it covers the road!

So.... Is it needing a tune. Rings? Valve seals? What? Any ideas?

 

[9!'clipseDOHC]

Gas or E85? Either way that is lean at WOT (a lot lean if gas) and should be tuned. For the smoke, do a compression and/or leakdown test.

 

[JRSTANGE]

Curious I had issues like this when the timing was off and a good amount of boost leaks. However, it could also be the fpr or afpr if you have one. Or even the vacuum line going to it. Assuming the tune on the v2 is decent etc...

 

[Boostified]

It's tuned on 93. I'll try a compression and leakdown tomorrow.
And I'm pretty sure it has an fpr. I bought it like it is. Haven't had any time to mess with it really. If it was a 7mgte I could fix it

 

[Pvtsloan]

i dont think its your valve stem seals as the smoke would be a bluish white smoke. and consistent not just under WOT and let off. but hell i could be wrong and i probably am

 

[Force Fed 4g63]

YOu need to get a proper tune on there, you are way too lean.

 

[ramsack]

And letting off the gas should give you an infinite AFR since there should be zero fuel being injected until RPMs reach down near 1000.

 

[Boostified]

Letting off says air- I meant like pushing in the clutch