Possible valley in VE Table

[Boosted C6]

2007 LS2 with the 2 bar os stock engine with a on3 turbo setup. I appear to have a valley or hole in the ve but data logs don't show it as a lean spot. Can someone take a look at it and let me know what they think? DFCO is turned on as this was meant to be the final tune for my car until I get my injectors in.

[Boosted C6]

I tried to post my data log but apparently its too big

[Boosted C6]

OK heres the histogram of the ltft+stft


ltft+stft ve.xlsx

[dhoagland]

No expert here....
Have you targeted the "Valley" area specifically?

If it was me I would go out and specifically hit cells at 3000 RPM from 65 to 95 kpa (kind of the floor of the valley)
I know that is real hard on the street, I ruined a set of rotors targeting specific areas.

[Boosted C6]

I have as best as i could and it doesn't run lean or anything.

I can try again and see what happens

[dhoagland]

This is different, Usually see fail high set to something, lets say 100. Then fail low at 99

[dhoagland]

I have as best as i could and it doesn't run lean or anything.

I can try again and see what happens

Okay
Maybe hit the high areas on each side?

Also post up a log. One of the big boys might see something obvious

[Boosted C6]

It works for me lol I don't know because the car is mafless

And I will. I have a log but its too big to post

[dhoagland]

Got Ya
So your system has IAT separate from the MAF? And your running Closed Loop SD?

And I don't mean to be 50 questions, but this is stuff I've seen in the past. You have 200 posts so I'm sure you're good.

EDIT
I just saw the "ve.xls you posted
So are you Tuning PE with a wideband and non PE with your o2 error

[Boosted C6]

Got Ya
So your system has IAT separate from the MAF? And your running Closed Loop SD?

And I don't mean to be 50 questions, but this is stuff I've seen in the past. You have 200 posts so I'm sure you're good.

EDIT
I just saw the "ve.xls you posted
So are you Tuning PE with a wideband and non PE with your o2 error

I have a breakout harness for the IAT sensor and yeah its closed loop SD and yeah stock o2 sensors for driving and wideband for PE

I'm more used to maf tuning then I am VE

[smokeshow]

Since you haven't changed the cam or injectors, I'd say you're likely just seeing the real world dynamics of an accurate VE surface. Look at the stock VVE for that car...you'll notice a similar valley/trough in exactly the same spot.

[dhoagland]

Since you haven't changed the cam or injectors, I'd say you're likely just seeing the real world dynamics of an accurate VE surface. Look at the stock VVE for that car...you'll notice a similar valley/trough in exactly the same spot.

Good to know...

Your Signature: BAHAHAHA!

[Boosted C6]

Since you haven't changed the cam or injectors, I'd say you're likely just seeing the real world dynamics of an accurate VE surface. Look at the stock VVE for that car...you'll notice a similar valley/trough in exactly the same spot.

I didn't think injectors would change how the VE is. I actually got my new injectors in for it today

[Alvin]

The VE table looks ok to me. You'll see dips and valleys.. in fact if you look at any dyno graph especially for a LSX vehicle you'll see a little valley usually in the mid 3000'ish RPM and sometimes another one right before 4800RPM.