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Are my numbers good?

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HokieDSM

20+ Year Contributor
1,725
2
Oct 24, 2002
Blacksburg, Virginia
I've been logging for a few months now, and aside from also trying to fight a royally annoying case of phantom knock, I'm just curious if my values indicate the car is running well.

At WOT (TPS = 100%), I'm getting about 16-19* of timing and my O2 reads around 0.82-0.84, and this is at 16psi on my ported 14b, running on 93 octane pump gas. The car pulls nice & strong - but I'm just wondering if these numbers are good considering my mods.

I know the Phantom Knock is playing royal havoc with my fuel trims - but I can post more detailed data up if its needed.
 
Any clue what would lead my o2 to be so low? I wonder if this would have any effect on my phantom knock.... I recently replaced my exhaust manifold with an Evo manifold - but the bolts to the turbo have worked themselves loose twice already...

I'm really just trying to eradicate anything that isn't the way it should be here
 
The most important thing you can datalog for gauging WOT tuning is knock.

Phantom knock will not effect your fuel trims.
 
HokieDSM said:
Any clue what would lead my o2 to be so low? I wonder if this would have any effect on my phantom knock.... I recently replaced my exhaust manifold with an Evo manifold - but the bolts to the turbo have worked themselves loose twice already...

I'm really just trying to eradicate anything that isn't the way it should be here

O2 sensor and what is normal is going to be different on every car... if you are getting good timing advance it will give you lower O2, and knock can make O2s go off as well.. if an O2 is going bad it will start to run leaner as well.. just tune for knock and use O2 for a general idea
 
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