Tuning for PD Blowers... Transient Fuel Manifold Volume

[norm8332]

Is it burst knock?

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Thanks for your response,

I have to check the log more closely about that, I think it may be but it is small, less than 1.0. I believe the issue is the lean spike, it is clearly there on the WB and there is a hesitation until it recovers. The trims are fine. It is as if the TB opens, but there it a delay in the increase of injector output. That's why I speculated that it may have to do with the manifold volume being wrong..at least based on what I understand. I just don't know if I should increase or decrease the volume at this point or even if I'm on the right track.