Six_Shooter's "little" project v.240z

[antus]

JR Says he'll do some research and see whats possible. Ive emailed him again to follow it up. Any further discussion or updates about tunerview should be in your thread here instead of further hijacking six_shooters thread. thanks!

https://pcmhacking.net/forums/view ... f=31&t=580

[Six_Shooter]

Convo continued from here: http://pcmhacking.net/forums/viewtopic. ... &start=410

My FPR is a boost referenced FPR, and does rise at at 1:1 ratio with boost pressure.

I really believe that the kinjflow calulator only works well for 1 BAR applications, from what I have seen here.

I'm going to try with a doubled displacement values and see where that gets me.

[delcowizzid]

ill paste this from other thread
ok so you are too high on the BPC when its set right you will get damn near 100% VE at 100kpa to get commanded fuel ratio in the 20-100 mapA open loop a/f fuel ratio table.if you havnt setup the "Charge Temp - Boost % Coolant contribution for calculating charge temp Vs RPM & MAP" table ide do so now.i generally just copy the 100kpa colomn into every colomn and then trend that table down on the slope it is heading in now by dragging 1 colomn at a time untill the 300kpa colomn cant go any lower its better than a flat table LOL.
after that its just going to be the battery voltage tables that will maybe need a tweak.like i said if you want to send me a bin i can have a scan through for anything that jumps out

[delcowizzid]

also post a log its normally easy to spot issues when you know where to look

[Six_Shooter]

There's nothing to look at in my bin, I just started with a starter bin and changed a few values to get good idle AFR, and then mostly tuned the 20 to 100 KPA, then used the 100 KPA values I came up with as a starting point in the 100 to 300 KPA table. It was just a rough tune to get some hands on with $12P and find out what I need to look into to understand what's different from what I'm used to.

So if the 20 to 100 KPA table will end up near 100 VE at 100 KPA, what good is the 100 to 200/300 KPA boost table then, if it's all going to be at 100 VE? This seems to suggest the $12P tuning doc is incorrect.

BPC, as in "Displacement/inj flow rate"? Searching for "BPC" yielded no items.

If that's teh variable you're talking about, then I'm too low, because if I reduce, I will need to increase the VE even more.

[Holden202T]

yeah bpc = injector flow rate.

[delcowizzid]

i was about to goto bed but i see you guys over the pond are just getting up so ill add one post before bed.
the 100-300 kpa ve tables have a multiplier table to make ve lower so you get a 2nd table that also goes to 100% VE .i think its just so the maths is easier for conversions instead of displaying over 100%.
Displacement/inj flow rate was what i meant yeah.if its correct your ve will be very near 100% at 100kpa to make actual wideband fuel ratio match commanded fuel ratio Map A: A/F Ratio - 20-100kPa Air Fuel ratio vs RPM and MAP.when all the settings are set bpc , injector batt voltage bias and ve table is tuned you should be able to change the commanded fuel ratio and get an exact shift in fuel ratio on the wideband to match your new commanded ratio.

if you take a log we can see if the ecu sees the memcal correctly and other things we wont even be looking at how out of tune it is just that its not seeing anything odd like TBI mode etc

[Six_Shooter]

It's seeing MEMCAL correctly, and all other things in that regard look good. The only CEL trigger is for knock sensor, since it's not connected (I'm not sure how I'm going to deal with that just yet), so I disabled the process code 43, and the code went away along with any applied retard.

So what you're saying is that the 100 to 300 KPA table could really be done in one column, or removed completely? Basically the multiplier table could look at the 100 KPA column of the 20 to 100 KPA table and multiply from there, like the OEM $8F and $58 code...

But that still leaves the idea that I will need to then adjust the multiplier table to ramp fuel in much quicker than the way it is set stock, and it still may not be enough.

I'm just not understanding the purpose of the boost VE table then, based on the input in this thread. The 12P advanced tuning doc suggests to me something a little different. In that the boost VE table should be below 100 VE and allow each point to be tuned just like in vacuum. This would require the 100 KPA column of the 20 to 100 KPA table to be quite a bit less than 100 VE.

[delcowizzid]

You are fully tunable in every cell on boost just thr same as off boost the multiplier adjusts each boost kpa colomn so you dont have to input ve numbers over 100 .its surely more tunable than just a multiplier as charger efficency changes with boost and backpressure variations through the rev range.

[delcowizzid]

You also will only habe a few cells that are near 100% ve iin the 100kpa colomn around max torque as long as it is around 95% ve at max torque you are fine the multiplier and rising fuel pressure stop the need to raise ve by a lot at max torque but but allows fine tuning either side of max torque rpm ill post some screenshots today when im not in bed on my phone lol