Dodge Hellcat stalling

[John_Carter_2]

yeah you can walk around packin a full auto m16 with a snail drum and no one there will blink twice

if you need help dialing it in at the track that is my specialty

the other tunes are for comparisons sake, you cant write them to your controller

i have whats app and can connect remotely if you still need help figuring this out

Are you offering to be a tuner or consultant?

[Jared Coory]

Heard back from the owner and seems that the original motor/box/ecu was a 2019
And the replacement motor was a brand new 2022 Crate engine
Have attached pics
I'm guessing there's a few differences between them - hence have the odd idling, stalling issue
Will see if I can find a stock 2022 Hellcat tune - or just swap all the sensors, injectors, etc over from the original motor - and see how that goes

[LilSick]

they changed the injector around 2020

the new injector has different characteristics

[Stoopalini]

The injectors and the TMAP sensors are most likely different.

You can get the part numbers directly off the parts.

[Jared Coory]

Thanks for that guys -
Much appreciated -
Also explains why the original engine had zero issues
First port of call will be swapping out the injectors and TMAP and IAT sensors

[Stoopalini]

So there are 4 TMAP sensors on this and one IAT.


HC_MAP_PCM-Wiring.jpg


HC_Supercharger_PCM-Wiring.jpg


The IAT is fine, no need to swap it over. The four TMAP's provide both a pressure reading as well as a temp reading. The pressure reading part may be off due to the sensor calibration differences between pre 2021 and post 2021 sensors being used. You can certainly swap all 4 over, or you can update the tune with the correct characterization data for the ones whihc came with the crate engine.

Same with the injectors ... you can swap them over, or update the tune with the correct data for the injectors in use.

Reading the part numbers off the components would be a good place to start.

[Challenger1320]

imagine working with a thousand people and only having one of them tell you to GFY

i must be doing something right : )

Who told you to GFY?

[Hellscat2018]

i dont see to many issues with injectors between the years at least not enough to throw the whole tune off like this, is this a modded stand alone oem harness and ecu being used ? did you compare the map sensor data ?

[Jared Coory]

The tune is actually pretty good - its just when it comes back to idle -
The standard ECU and loom is being used - although a few things like the Fuel pump, ABS and TRaction control have been omitted.
Getting the vehicle back here next week - so will compare the MAP readings - although on the HP Scanner - the Map readings seemed about what I'd expect
But then I guess they reading an average from all TMAP sensors