Need help with torque reduction on E92 PCM 2015 Z06 Manual Trans

[Jason S.]

Need some help with Torque reduction on E92 PCM for 2015 Z06. You can see the throttle reduction in the mid range during the pull. Any ideas on what tables and where to adjust to compensate for this?

https://www.dropbox.com/s/z1abnmy1780fexx/Todd%20Pulley%20cold%20pull.efi?dl=0

[joecar]

Tune file...?

[Jason S.]

Tune file...?

Sorry

https://www.dropbox.com/s/7bt8yodk4n2w9mz/E92%20C7%20Z06%20M7%20Todd%20Welker%20Upper%20Pull ey%20Ported%20Blower%20Heat%20Spacers_TorqueLimits %20pegged_6outafm_Mafadjust_Aittiming_Fans.ctz?dl= 0

[joecar]

No problem... you're in my queue.

[Jason S.]

any luck? Also having an issue with it not entering Power Enrichment mode until 4krpm.... can't figure that one out....doesn't ALWAYS do it, but most of the time it won't enter til after 4krpm.

[joecar]

Set B0156 PE Throttle Threshold to a lower value, say 50% below 3072 RPM, and 30% above that RPM.

B3618 PE Fuel is overly rich at EQR 1.25... if LTFT's are close to zero, then you might pull this down to EQR 1.19 until you get MAF and VVE corrected.

[Jason S.]

Set B0156 PE Throttle Threshold to a lower value, say 50% below 3072 RPM, and 30% above that RPM.

B3618 PE Fuel is overly rich at EQR 1.25... if LTFT's are close to zero, then you might pull this down to EQR 1.19 until you get MAF and VVE corrected.

What am I missing there? I am at 100% throttle?

On the P.E. fuel is this an opinion or something in the ecu that thinks that? It makes best power at 11.75 because I can keep some timing in there.
My MAF is spot on...I am hitting my commanded mixture.

[joecar]

I was hoping the PE Throttle Threshold was it because I don't see any PE RPM threshold.

On PE fuel: I thought that was the factory setting, I didn't realize you set it to that value for boost, please ignore my comment.

[Jason S.]

O.k. well for whatever reason lowering the throttle PE threshold worked (love to know what that really is doing though). Looks like the last thing I need to sort out is why it is closing the throttle like I posted early...through the mid range, it reduces throttle then gives it back by about 4500rpm or so. I have made 676whp so far with an intake, headers, and a pulley. It's running well otherwise, just can't get a good low end read.

[ScarabEpic22]

If the ECM thinks it's delivering all the TQ that is being requested, it will close the throttle. I.E. final TQ command is 650tq at 4000rpm and the ECM thinks it can/is producing 650tq at 4000rpm with 75% throttle opening, it is going to not open the throttle any more. If the ECM thinks it isnt delivering all the TQ being requested, it will keep the throttle open. I havent played with an E92, but the TQ control model is similar to the E78s and Ive been playing with this on my Sonic.

[Jason S.]

If the ECM thinks it's delivering all the TQ that is being requested, it will close the throttle. I.E. final TQ command is 650tq at 4000rpm and the ECM thinks it can/is producing 650tq at 4000rpm with 75% throttle opening, it is going to not open the throttle any more. If the ECM thinks it isnt delivering all the TQ being requested, it will keep the throttle open. I havent played with an E92, but the TQ control model is similar to the E78s and Ive been playing with this on my Sonic.

Ok. so what table do you adjust to increase the requested torque?

[ScarabEpic22]

I cant see your tune so dont know what you've adjusted so far. If you think you've caught all the limiting tables, as a test raise them much higher than the engine will ever make and make another pull. If it still occurs, then it's not one of those tables and you can move on to others. If it fixes it, then process of elimination to figure out which one.

What did you set the Torque Response power tables to, are they set high enough at the MAP/RPM breakpoint you're seeing the limiting occur? Torque control, Boost Control parameters too.

[joecar]

Jason, you url's don't work across some domains... it might be easier if you post the actual files, then Erik can open them.