Help stock tune 4 afr

[400ss]

ENGINE: 6.2L VVT
TRANSMISSION: TH400
HARNESS: 08 SILVERADO STOCK HARNESS CONVERTED TO STAND ALONE, DELETED TRANS.
ECM: 2010 E38 ( it came from a 6.2L cadillac) OS: 12636005

MODIFICATIONS TO THE TUNE: VATS PATCH, DELETE DOD, DELETE FLEX FUEL, DELETE VARIABLE FUEL PUMP..

PROBLEMS: MAP CODE,, EC IS COMMANDING LIKE 4 AFR I DONT KNOW WHAT TO DO.

I ATACHED THE CURRENTLY TUNE ON THE ECM, AND A LOG OF IT RUNNING.

IF SOMEBODY CAN HELP ME I WILL APRECIATE IT.. THANKS6.2L no trans vats removed.efioscar2.ctz

[Taz]

You already had a thread going regarding issues ... why start a new thread ?

Your tune is still setup for a Bosch MAP ... not the Delphi MAP that you are using. As a starting point, open a 2007 or 2008 Escalade / Sierra / Silverado tune and copy over the MAP parameters into your 2010 Escalade tune.

Then confirm the MAP is outputting your local atmospheric pressure at key on, engine off.


Regards,
Taz

[400ss]

Hi, i already copy paste the parameters fro a 08 silverado on the engine sensors folder, on MAP

[Taz]

I'm confused ... the tune in post #1 (oscar2.ctz) has the MAP Scaler / Offset = 128.2031 / -0.3047. That is no different than what you originally started with - Bosch settings. If you have a Delphi MAP the Scaler / Offset = 94.4297 / 10.3359.

Either way, make sure the MAP reports local atmospheric / barometric pressure with the key on, but the engine not running.


Regards,
Taz

[400ss]

can someone check this tune please.. engine 6.2L VVT,, th400 trans. MAP : 09359409 MAF: 15900024 i copy paste the VE tables and MAP MAF parameter from a 08 6.2L ,, the map shows 121 with the engine off. i think the only thing i didnt changue is the scaler and offset of the MAP sensor that TAZ is talking about on the above post..

[Taz]

...map shows 121 with the engine off ...

The MAP is over-reporting (i.e. 121 kPa with engine off, instead of around 100 kPa - less if you live at a high altitude) because you still have the original Bosch MAP settings in B2101 and B2103 - not the Delphi MAP settings you require.


Regards,
Taz

[400ss]

thank you, i update those setthing now, it shows 100-101 engine off... i copy paste all the parameters from a 08 6.2L yukon to my tune.. the only question i have right now is that i cant copy with labels and paste with labels the injectors flow base and inyector flow correction tables,

[Taz]

... the only question i have right now is that i cant copy with labels and paste with labels the injectors flow base and injector flow correction tables ...

Actual tuning requires more than a copy & paste approach. The injector related tables must be extrapolated / interpolated (pick your word) - as the table axis are not the same between the calibrations.

Joecar did the hard work on many of these a while ago. Search the Forum for the Excel spreadsheets he posted regarding swapping injectors between controllers (i.e. LS3 injectors with an LS1-B PCM).


Regards,
Taz

[400ss]

thank you for all.. really, i know it requires alot more than copy paste but first i want the engine to run as it should, its all stock.. it has the stock 6.2L injectors so i will leave the injectors data as it is now

[joecar]

I forgot where on the forum I put the spreadsheets of the LSx-to-LS1 interpolated injector tables...

so see attached...

( read the name of each spreadsheet file, and within each file read the engine RPO names and the tab names for guidance )