i have replaced my old 08 ls3 tbody with ported ls7 tbody and car couldn't even start/idle,, is that expected since both tbodies are almost of same size?
i have already jammed airflow table by 30%,, car now idles but startup is not positive and fast as before,, it starts hardly and rpm goes slowly up to idle speed,,
please help,,
09 CTS-V A6
Did you change the TB scaler size? If its larger you need to lookup the correct value.
It's under Engine, Idle, Airflow, General, ETC area scaler.
Also to note, if it has been overported by a zealous person and you have too large of an airgap you will see a high idle. But since you didnt mention that, its probably not an issue and just the scaler just needs changing. You should undo your 30% in the table before changing the scaler and see how that goes. You will need to adjust the airflow and retune after you get it to idle though.
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