Help with MAF tuning 24x converted LT1

**NomakeWan** · 09-17-2023

Trimalyzer is great but you'll need to tell it what format your MAF table is actually in for its data to make any sense. I haven't looked at an 0411 so I don't know what sort of MAF table it uses, but on a '95 Corvette's stock PCM I had to create a brand-new MAF table in Trimalyzer that matched the Hz values found in the factory BIN, at which point it was able to offer corrections based on my logs. My guess is that's where you're being tripped up.

**Cadmaro** · 09-17-2023

Originally Posted by NomakeWan

Trimalyzer is great but you'll need to tell it what format your MAF table is actually in for its data to make any sense. I haven't looked at an 0411 so I don't know what sort of MAF table it uses, but on a '95 Corvette's stock PCM I had to create a brand-new MAF table in Trimalyzer that matched the Hz values found in the factory BIN, at which point it was able to offer corrections based on my logs. My guess is that's where you're being tripped up.

Maybe I'm not building the table correctly? I made a table with all the correct HZ values but it showed max correction for every value that was logged. I even tried upping the max correction to 100% and then it showed 100% correction for ever Hz the log had any data. Is the a tutorial or write up on building a MAF table somewhere?

**NomakeWan** · 09-17-2023

Usually seeing max correction means your import settings for the log are wrong. I had that happen when I was importing EEHack logs into it for the first time. Trimalyzer by default uses 0-255 (128 being "no corrections needed") for trim inputs, but EEHack logs use +/- Percentage (0 being "no corrections needed") for trims. What type of trims do your 0411 logs use?

**Cadmaro** · 09-17-2023

I changed the settings from 0-255 to match the % in the logs from the 0411. Is it messing up because my logs include both STFT and LTFT from both banks?

**NomakeWan** · 09-18-2023

Originally Posted by Cadmaro

I changed the settings from 0-255 to match the % in the logs from the 0411. Is it messing up because my logs include both STFT and LTFT from both banks?

Nope, I use both banks in my '95 logs as well. Trimalyzer can handle that.

As a sanity check, make sure that the field mappings are correct as well. If it's pulling data from the wrong field in the log that'll make a mess of things as well.

EDIT: Just looked at your first post. Looks like you're missing the Integrators. Maybe in your log they're referred to as STFT rather than INT? Either way, you should put STFT into the INT Field Data. Then sanity check and make sure that all the other data that Trimalyzer wants is being pulled from the correct place in your logs.