Hi all,
I am a french newbie interested by tunning the engine GM LS7 Supercharged with the Vortech kit 4GS218-020L.
Vortech supplied with this kit the necessary to tune the ECM. I have some questions about this tuning:
1 - MAF Calibration.
- In the table "vs. Airflow. Freq. Low" the first cell contains the value 510. What is the reason?
- In the table "vs. Airflow. Freq. High", between 6400 and 12000 Hz, the values are slightly lower than the stock LS7 table. Is not it surprising?
2 - Virtual VE Table.
It remains the same as the stock LS7. Is this normal?
3 - Main Spark Advance - High Octane.
This table is not at all smooth. Between 0.28 and 0.52, it contains values much lower than the stock LS7. In addition to this, there are peaks present in several areas. What is the explanation?
4 - What should be tuned further in case of replacement of exhaust stock by long tube headers (Kooks) and Borla exhaust ?
Thank you in advance