I have a 2018 L83 with a Whipple 2.9 and installed a GM 3 bar MAP intended for an '18 L99.
What parameters need updated to instruct the ECU that it now has a 3 bar?
I have a 2018 L83 with a Whipple 2.9 and installed a GM 3 bar MAP intended for an '18 L99.
What parameters need updated to instruct the ECU that it now has a 3 bar?
airflow-general-characteristics
linear and offsets need to corrected to new map sensor
Michael Bray
Rusty Knuckle Garage
Slidell, Louisiana
20yr Master Tech.
Advanced Level Specialist
Custom Car Fabrication, Customization, High Performance.
GM World Class Technician
Shop Owner
Thank you mbray01 Sir.
Where do I find the info to update the values?
Last edited by thebigouch; 12-23-2019 at 02:43 PM.
The google.
The part number is likely the red GM 3 bar map. If that is what it is, the settings should be 312.5 and -11.25. I forget the part number off hand.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
pull one from a file that used that sensor, ie the stock vehicle file from the repository
Michael Bray
Rusty Knuckle Garage
Slidell, Louisiana
20yr Master Tech.
Advanced Level Specialist
Custom Car Fabrication, Customization, High Performance.
GM World Class Technician
Shop Owner
Thank you 5FDP and mbray01. I have been ALL over google and have found a variety of values; I also noticed the same part number is used on both the L83 and the L99. Why would the pn be the same and each require different values?
What part number did you buy?
This is the GM part number for the red 3 bar GM map that I always use.
# 12592525
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
5FDP, I ordered 12644228 after researching Pace Performance and rock auto for part numbers I installed it today and the truck runs but is pig rich! That was the only change I made.
mbray01 I dug around in the repository with no luck. tried a few different models that use this MAP part number.
This site says it's a 1 bar sensor.
https://paceperformance.com/i-134792...4-engines.html
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
5FDP I discovered the same thing. I know Whipple suggests using the stock sensor and I have been following threads on this forum and decided to try 3 bar. I will order the 2525 tomorrow.
BTW, will it plug into a three-pin connector?
Install the 12592525 red 3 bar map sensor. It fits directly and the data:-
linear= 312.5
offset = - 11.25
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