Hi guys - first off I'm a total newbie when it comes to tuning so please take my observations and responses from a said perspective, would appreciate it better if you could point/correct me towards the proper direction.
I'm trying to improve full and partial throttle performance by advancing timing. I'm on Wayno's 98RON ROM with stock gutted headers and a catback exhaust on RON97 fuel. Since flashing to Wayno's I've captured about 7 hours worth of logs and loaded it into a visualization tool to help me make more sense of the data I've collected. I typically do city driving, with some highway and the occasional canyon runs.
So I did a dyno run very recently and this is what I've found: IAM is reading at 1 with some minor knock after 5k rpm, with quite an amount of knock past that - about 2-4 degs taken away. However I'm not sure what I could do to improve that situation other than reducing timing at those areas of the map so I'm letting the ECU handle it for now.
Below is a log of an hour plus drive around city and highway with traffic. IAM is at 1, and FBKC at 0. This looks good to me, which I can probably improve on timing based on these results.
Many advise increasing timing half or 1 deg at a time and check back for FBKC/IAM drops. Now this is simple enough but increasing timing blanket wise doesn't make sense - after all I'm already seeing FLKC at WOT at more than 5k. Increasing timing at sections where the engine doesn't go (low RPM, 1 load) won't do a thing either. So back to the logs again...
This is a heatmap of RPM and load of my logs combined with these filters in place:
1. >=1000 RPM
2. On throttle (>=15%)
3. Oil and coolant temp >=85C
4. Loads >= 0.25
My approach is to apply additional timing at the solid blue areas, as those areas are the lines that the engine goes (again, not advancing anything above 5k at high loads)
Now I know our engines will be knock limited at WOT so that's easy to tell whether if I'm advancing too far. But would I be knock limited at partial throttle I'm also aware there are methods to calculate or estimate MBT - that's all I know for now, I'll need to do more reading...