211Ratsbud

iTrader: (1)

This is exactly what I started doing today.

My ve from my already tuned by target afr set up was very close in some areas, transitional pressures, and off by 10 or so at 240 kpa. That's just a reflections of the already tuned sd ve table being based of ideal afrs vs my maf rom having typical 10. Xx to achieve 11.xx.

I'm gonna unhook my wga from the flapper. This method has tremendously leaped and bounded over the log and lookup map adjust ve flash method

MercenaryX2

Thanks for that. Reason I ask is cause I just had a headache of a time creating an SD table from scratch for a buddy of mine and he was getting rather impatient with me. Partially his fault cause he installed the SD sensors and deleted the MAF then sold it before we even flashed it to an SD rom... I'll remember this though.

211Ratsbud

iTrader: (1)

I'm comin up with some odd ve calculations . I'm only using wot data, there's a big difference between 220 kpa and 240 kpa


Can anyone share a 3d view done this way?

90zcrex

iTrader: (11)

What kind of difference are you getting? What rpm? I see around 102-105 VE in that area at around 3700-3900 rpm. I actually didn't even use Evoscan while making my VE map. It's pretty easy to just look at a couple datalogs and get an idea of what it should be in certain areas. Now that I've fixed the 1:1 issue I'm reading almost dead on with my maf tune at WOT. I have a couple small areas to add a little fuel withe VE but overall it was pretty damn easy. Almost too easy lol.

211Ratsbud

iTrader: (1)

220 kpa sees 120% tapering to 114%

240 kpa sees 111 tapering to 103

I took all of my wot logs, combined them in to one log and used map tracer to display that log. Used map as my x axis too

Now that I've worked out the kinks so I can brake load every thing like hell lol

Jack_of_Trades

iTrader: (17)

It's not uncommon to see VE begin to taper down as load increases. This is generally due to the engines actual VE being limited by back pressure in the system. That does seem like a drastic jump from 220 to 240 though.

-Jamie

el.guerrero

is properly to adjust VE to get afr map closer to afr you log? or is really wrong?

211Ratsbud

iTrader: (1)

Thx, I'm workin in my logging technique still maybe ill get that one sorted over a few more. 240 kpa is wastegate pressure so I mainly have increasing tps logs across those 220 cells. Segway to..


Is it important to use increasing tps only or ca. Steady state tps data be used aswell?

211Ratsbud

iTrader: (1)

I unhooked my waste gate actuator and got my ve for 100-110 kpa, I don't believe that would effect ve. Does anyone have any thoughts there?

domyz

iTrader: (6)

No effect to VE (in my thinking)....

what I can say is that I found something that messes the VE calcs logging:

A synapse BOV can be either open or shut at the same load and rpm (i.e 80 load/3000RPM) depending on TPS behavior (movement/speed/up or down).

Like you said, it's important to log only stable/raising tps and no decel at all while doing this method.

Big Bald

iTrader: (1)

I have a stupid question. Speed Density uses the 3D VE table exclusively even if running open loop full time? I thought i read somewhere that above 90% throttle is switches to the fuel map. I searched for the answer on here but did not find anything to confirm that.

evo8426

iTrader: (27)

It uses the VE map 100% of the time.

EvocentriK

OK couple of mega noob questions.

I have a JDM 8 and I'm running 96534706 (3d). I read the 9653 MAF rom being based on EDM was never designed for use with a MAP sensor. Now I'm obviously running one (GM3bar) and I have it connected to pin 92 of my 3 plug ECU. I log this input from MUT38. However for SD rom the rom needs to know what boost is, but I have no code to set to 1. scale the GM3bar and 2. tell the rom what address to look at for the MAP sensor input. I'm assuming this rom was written for USDM cars with a MAP sensor and the address for this input coded in accordingly. What do I need to do since I run this rom on a JDM 3 plug?

All I have are these settings for Max VE etc.



What do I set them to and do I need additional code to set GM3bar scaling/address so the rom can use it. Mrfreds thread has all but 9653 code.

211Ratsbud

iTrader: (1)

Right click on the map kpa table and be sure that bathe scaling for map sensor is set to your 3 bar.


8858 that I use also did not come with a map sensor.! Map:kpa table is the one you're concerned with though.

EvocentriK

Yep I have scaled both to GM3bar. But how does it know what the output of the MAP sensor is if you never tell it what address to read it from?

When changing from stock to JDM MAP sensor the Mid VE Max voltage/min voltage etc need to be changed. I'd like to know what to do with them for a GM 3 bar too.