Throttle Blip Engine Dip

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I have an issue when blipping the throttle. My idle is consistent, AFR is consistent but when I blip the throttle the engine cuts out instead of revving. Spark , TPS, Map and RPM seem to track correctly in the scanner but the engine itself cuts out until I let off and then it revs a little after I let off which I would imagine would be due to the follower table. Does this sound familiar to you. I'm tuning on a 2 bar SD setup so could this be a hole in my VE? I remain in good AFR throughout.

[RDF1]

Have you checked fuel pressure?

[horsepowerguru427]

You need to be logging TPS% so you can see what your throttle is atually doing.

[abc]

Yes, verify fuel psi 1st. I suspect your WBO2 is not set up correctly, it should not stay that steady during a transient situation. Do you have NBO2's available to log and use as a compare? ...and yes, your initial thought about the VE table is correct, looks out of reason, likely due to the fact you have been trying to tune with a suspect WBO2.

As a test, take 15 to 20% out of the VE table just above idle and below 3000 rpm.

[Alvin]

I have an issue when blipping the throttle. My idle is consistent, AFR is consistent but when I blip the throttle the engine cuts out instead of revving. Spark , TPS, Map and RPM seem to track correctly in the scanner but the engine itself cuts out until I let off and then it revs a little after I let off which I would imagine would be due to the follower table. Does this sound familiar to you. I'm tuning on a 2 bar SD setup so could this be a hole in my VE? I remain in good AFR throughout.

The wideband is flatlined like it isn't working.

The VE doesn't look good at all. There is much chance this is actually tuned well which is important because most idle issues are actually just fueling issues (too rich)

You need to address the transient min PW. if you do a search for that and big injectors you'll see what I'm talking about.

Don't go changing throttle followers, or crackers, or anything idle related right now. The VE and fueling come first.

[edcmat-l1]

Injector flow rate is set for a return style system and the offset is setup as a "dead head" system.

VE is um, interesting.

The dynamic cyl. air is way way low. Something is off pretty bad.

Wideband is not working and you're not using your narrowbands. I can't stand that method of tuning. Especially when it's being employed by novices who don't really understand what they're looking at. At the very least your narrowbands provide a "sanity check" for your WB.

Stopped looking after that.