Tuner Studios Assistance please

Greetings fellow tuners,

I am at a general loss, when it comes to Tunerstudios. I input the AFR logic as i spent a few bit calculating precision, right? so after I input the values into the TunerStudios MS Ultra version 3.1.08. I turn my Miata on and it is reading hella rich numbers at 14.7 and while in the AFR table the only value that comes close to AFR is 25.5 which is the highest numerical value you can put in place on this table. then through VE adjustments i got it close to the AFR targets. But i am at a loss. does anyone know the Tunerstudios values for an AFR scale? I know that i have a range of 7 to 25.5. So far 25.5 managed to get close to AFR targets.

Thank you in advance for any assistance you can help me with. I'm wondering if i am locked into using tunerstudios only with this speedyefi ecm? there are some logic that doesnt match anything anyone is discussing on these forums. So relating the information im learning from your end isnt helping much because the calculations wont matter. the Program has it's own values that are not as calculated values and i have no instruction manual from tunerstudios that expresses this.

the setup:

93 B6ZE-RS bored .5 over

OEM forged internals with .5 oversized pistions

AEM X-Series wideband O2 Sensor

Panic made Bosch IACV

Deleted AFM, Thermosensor and OEM IACV

SpeedyEFI ECM

GM IAT

GM MAP sensor

FIC 365cc injectors (drop data 399cc @970ms)

the MAP sensor is located on the back of the intake manifold on a lower port below the same port the IACV is on. the IACV is distributed through the brake booster line, and the MAP sensor is attached to a spot that is regularly capped off for other miatas.

I dont know if the location of this map sensor is causing some weird signals. when engine off i read 100kpa when the engine is on, it is between 15-16kpa (is that too low?)

The spark table generator when applied causes the spark to lean out in some areas and due to the weird logic of the AFR table i am having some issues.

I managed to get the idle to 850 consistently which that is a huge win since i had been averaging an idle of 1400-2400.

could you please give me some pointers. I am severely mechanically inclined with the physical electrical and mechanical. ask any questions and i will give you the value for what you are seeking. This first post is just me putting words down to find likeminded individuals that can assist me. I do appreciate you looking at this forums and appreciate any responses from you. Thank you

Make sure that the under general settings you have 'include AFR target' set.

Next make sure all sensors are calibrated properly, including MAP, CLT, IAT and TPS and your AFR input scaling (either by model or using the output scaling to match what is in the manual for your O2 unit)

Then set AFR table - which is target AFR - to what you are needing (e.g. as example 12-12.5 most load areas, 14+ no load/cruise areas). This table will not work until VE is tuned properly.

Then you need to run the engine and get the engine steady at each cell for the load/rpm and adjust VE until actual AFR matches the target AFR in your table.

I have my tunerstudio setup with a custom channel to calculate and display the correct VE number based on the AFR error and it makes process super easy:

create a new channel (call it corrected_VE or whatever), then use this formula " veCurr1 -( veCurr1 *(1-( afr1 / afrtgt1 )))" - note some versions may call the variables slightly different names.

Then I add an indicator to one of the dashboard pages that displays this new value, that is what you set the VE table cell to to fix it.

Only once you have VE tuned so actual AFR matches the table AFR can you then be using the AFR table to adjust fuels.