2007 Turbo C6 LS2 rich and lean spot on shift at wot

[Boosted C6]

Turbo ls2 vette 6 speed manual has a lean and rich spot on shifts at wot. Seems like wot fueling has some delay even though i changed the PE ramp in rate to 2.


lean spots on shifts.hpl ls2 turbo mod 18 ve changes new wastegate springs.hpt

[Alvin]

You will always have a rich/lean tip in or out reading. The engine will be running behind what you already injected. This looks reasonable.

Do you actually feel a hiccup or something?

[Boosted C6]

Nope it feels fine I just thought it was strange

[Alvin]

I wouldn't worry about it.

This is the exact reason why people filter out fast pedal movements when tuning fueling (VE or MAF)

[Pekka_Perkeles]

Turbo ls2 vette 6 speed manual has a lean and rich spot on shifts at wot. Seems like wot fueling has some delay even though i changed the PE ramp in rate to 2.

While I didn't check your log and if you have some free time to spend for testing, you could try to change Transient Fuel Impact Factor. I've had some success with it getting rid of lean spot. Try adding 30% or so.

[Lakegoat]

Why isn't your (closed) VE table populated the same as the (open) ?
Do you have a boost referenced regulator or is it a dead head setup
Are you setup for running SD?

[Alvin]

only open is used.

[Lakegoat]

Only open is used on SD ?
I was reading on Tech that a guy was going to use two fuel pumps, one on a hobbs, and install a timed relay to prevent fuel pressure drop between shifts ??