2010 L99 Start up and idle issues

[BillyBear]

This is a LS swap project, 2010 Camaro L99 & truck 6L90 to into a 1957 Chevy. When I start it will run for 15 seconds then dies. If I pump the gas, I can keep it running, but it runs very rich. Once the engine temp reaches 195-200 if will idle. I have attached the current tune and scan files. Thanks in advance for any suggestion on the tune or insights you discover.

[blindsquirrel]

Why is your MAP sensor reading 228kpa at key on/engine off? Why is the tune file set up for a 3bar MAP - are you using a 3bar MAP?

edit: And 115lb/hr injectors? Seems you would have mentioned that if it wasn't stock. Are you sure this is the right tune file?

[Mr.z0611]

Stock engine, injectors, map sensor, and TB?
Test this tune.

57 Base Tune 2021-05-08 000(z).hpt

[BillyBear]

blindsquirrel,

Thanks for taking a look, I bought the 6.2.and ECU together. God only knows what been changed over the years. I have replaced all the injectors with Stock Camaro SS injectors, so what is the correct lb/hr for stock injectors and bar MAP I just replaced the MAP sensor (Stock Camaro SS MAP).

[BillyBear]

Thanks Mrz0611

Thanks for the tune. I do not have a turbo on this engine.

Thanks for taking a look, I bought the 6.2.and ECU together. God only knows what been changed over the years. I have replaced all the injectors with Stock Camaro SS injectors, so what is the correct lb/hr for stock injectors and bar MAP I just replaced the MAP sensor (Stock Camaro SS MAP).

[SultanHassanMasTuning]

do a key on engine off log

verify the map sensor part number and injectors

from the looks of the file its a boosted setup and has over 1000cc injectors setup

[BillyBear]

Will Do

[BillyBear]

Thanks SultanHassanMasTuning

It was a stock MAP Sensor. I went back to a stock tune and everything is working!

[BillyBear]

Mr.0611,

Thanks for the help I went back to a stock tune and everything is working!

[BillyBear]

Blindsquirrel,

Thanks for your help, I went back to a stock tune and everything is working!