Turbo Escalade 1-2 shift fishing in the dark

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I will make one calibration change for an additional $100 per change. For example, changing a shift point for a given gear is $100 vs changing a shift point and a pressure setting would be $200. That value can be used towards the full custom tuning price.

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Tue, 03/07/2023 - 23:35

#1

wainfiggitty

Turbo Escalade 1-2 shift fishing in the dark

I'm not sure if 2nd is slipping or if there is a tune issue causing a long 1-2 shift.

Build: '07 Escalade, SD operating system on E38 pcm, 235/247 cam, 85mm turbo, 4 bar map, ls7 maf in 4" tube, 1500cc injectors, 400lph pump, 92 octane.

63lb/hr injector limit so scaled tune 50%, doubled stoich. MAF and VE are pretty much dialed. 13lbs boost on gate pressure no controller.

I increased torque EQ and also increased Airmass EQ. I don't have issue with slip cruising on the hyway, the shift performance is acceptable everywhere with exception of WOT 1-2. I've messed with different pressures and torque management settings..

With tq mgmt the 1-2 shift acts like it'll finish then flare up again, PCS pressures do not change during this.

With tq mgmt off it's slightly better.

If I start a pull in 2nd gear, it holds throught the RPM range and shifts to 3rd fine.

Looking for ideas.... or confirmation if I need a new 2-6 clutch pack.

my apologies for two different tune files, one is the engine cal and the other is the trans cal. I attached logs showing the tq mgmt shift flare, no tq mgmt flare, and a no slip 2nd gear pull.

Thanks

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Turbo Escalade 1-2 shift fishing in the dark

Click on the "SUBSCRIBE" tab to sign up. I will not respond to technical questions unless you are a paid subscriber. Calibration and Config files will not open directly from the site, they must be downloaded to your computer in order to open.

NEW!!!

I will make one calibration change for an additional $100 per change. For example, changing a shift point for a given gear is $100 vs changing a shift point and a pressure setting would be $200. That value can be used towards the full custom tuning price.