I'm currently in the process of tuning my 2013 Ford Focus, which is equipped with an aftermarket turbo. Engine is the 2.0 N/A TiVCT. Previous attempts at tuning have resulted in poor tunes with lots of drivability issues, so I'm learning to do it myself. The WOT pull is okay, partial throttle with boost almost always throws a P061b. I've started adjusting the Torque Tables to reflect the Brake Output Torque, moving in increments of 10, and I've tried commanding a richer AFR (10.8 on 93) on WOT. I plan on keeping it here until I can confirm that knock is in check with 10psi and the 12.2:1 static compression. I've attached the current tune and a log. MP7/8 are the ones I've modified the most. The other tables are still a mess. Here's a few issues and questions that have me stuck.
1) I've set the Power Enrich Lambda to 7.4 but it almost always seems to start heading lean on a WOT pull around 4500. The Fuel Source PID stays at "Power Demand Enrich" but it's obviously referencing or blending another value that I can't find. Also, I have two PIDs for Commanded EQ with different values (SAE and Bank 1), which is most reliable?
2) How does my timing look? I haven't touched the values but I'm not getting any KR. It does jump around quite a bit.
3) The Driver Demand tables are currently stock. I assume I should update them to reflect the torque increases of the vehicle? I'm not sure how to balance this with modifying the torque tables. I've read all the posts on the torque system but it seems like most people with boosted applications have some tables or even an OS for reference instead of trying to scale them from scratch. Is the Brake Torque a safe indicator of TQ on the street? I know a dyno is most ideal.
4) The throttle surges heavily in the area I'm trying to tune currently. Is that strictly a torque table issue or should I be looking in other locations as well.
Thanks in advance!
Log 5.hpl
Focus Tune V2.hpt