Quote:
Originally Posted by Wayno
The FLKC graph illustrates perfectly where you are hitting the wall of the capabilities of your header.
You can't ask it to do what it's not designed for.
Bite the bullet, take the timing out and spend the money on track time where it belongs.
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If it's the headers capability to move the exhaust fast enough, why is only showing in higher gears? Wouldn't the capabilities of the header relate to rpm and mass airflow only regardless of gear? Or what am I missing.
Also as far as I recall I didn't get nearly as bad FLKC when it was colder (this log had 30 deg C IAT). I might make IAT compensation (even) more aggressive before I'll lose the timing. And as said above I'll put the TCPC back in first and see if it makes a difference.
This is how it ran on track with the same timing at 15 deg C IAT (actually more timing due to higher load and no IAT comp - knock corr is FLKC, and the data are Tactrix log overlaid):
Quote:
Originally Posted by tdotBRZ
AFAIK the ECU detects FLKC off the sensors that are meants to monitor knock on a STOCK car. Once you have done modifications, such as upgraded exhaust, headers, tune, the FLKC does NOT provide accurate information, as even rasp from the aftermarket exhaust can cause some FLKC to appear. If your AFR is within the normal range, IAM is steady at 1 and you don't hear any knock and car behaves fine, then don't worry about FLKC. Having said that, 11.6 AFR is tad bit low, might wanna get a better tune and get it steady north of 12 throughout the RPM range.
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Except for the header, I am running stock exhaust. I just don't know if I feel comfortable with the ECU pulling
that much timing.
P.s.
Are you criticizing my tune? Auch, that hurt! It's the 33rd iteration.
It's the set to target 11.6 AFR on purpose:
