These are correct in the 3D roms I have used.

A good way to see if its scaled correctly is to set the entire VE table to 100% and adjust your injector scaling temporarily so the car is driveable. Under normal acceleration, the KPA and LOAD should log the SAME values.

-Jamie

 

Here's the thread that got me to change back to 9417. https://www.evolutionm.net/forums/ec...vs-9417-a.html

 

Thanks for the useful info. Now hopefully I can stop banging my head against 96534706 for 3D SD

 

How is the IAT and the CLT factored into the SD calculation in this ROM? Most OEM VE/SD setups and most good standalone ECUs with true VE calculation have a "charge temp blend" table of some sort. Typically, at low airflows, the water temp is a better representation of the charge air temp actually entering the cylinder, due to low airflow and heatsoak from the manifold/head. As airflow increases, the IAT becomes more and more an accurate representation of true charge temp, usually being close to 100% at WOT.

I'm asking because of issues with hot start from heatsoaked IAT sensors. This shouldn't be happening because the calculation shouldn't be factoring the IAT into the calculation more than 10-20% or so, the majority of the charge temp correction should be coming from CLT.

Beau

 

This is a rough 'patch' and not a true speed density setup so this isn't as ideal as you wish it to be, unfortunately. To combat heat soak, the smartest alternative it to have the IAT as low and out of the engine bay as possible. I have seen the IAT come back down to outside ambient temperature in only about 4-5 seconds at idle airflow.

-Jamie

 

Fair enough. Hard to complain about something that's free.

 

lol, it sure is. I have seen more OEM SD setups use the baro sensor for the first few seconds and then switch over to the charge air temp sensor than anything else. Some even use the baro sensor as a 'clogged air filter' monitoring system as well, which I always found to be a nice feature.

-Jamie

 

I tried 94172715 but there appear to be multiple errors in the XML and bin downloaded in the links in the first post of this thread. It looks like several tables are incorrectly addressed. The bottom line is I can get it to start but it won't run without major XML re-work.

Can anyone send me or link me to a known "working" 94172715 ROM and XML, ideally without inheriting 94170715 XML as Roadspike's version does?

 

Just flashed 94172715 to the car. Started right up and drove beautifully.

Now I just have to fine tune it. It's very rich above CL (90 Load and up). LTFT Mid is -4.5 and Low hasn't registered yet. No lean tip in. I couldn't be happier.

I'll keep you updated.

 

Did you use the link in the first post of this thread to the binary and XML?
Are you using the V7 Tephra mod XML for 94170715?

I did for both but had a totally different (negative) experience so I'm trying to figure out what I did different to you.

 

I just used the zip file at the bottom of the 1st post of this thread. I am using the TephraMOD-94170715-v7 XML as the 3d SD ROM inherits that.

Did you have 94170715 v7 working for you before you tried SD?

Update: I lied. I still had the MAF plugged in. Changes I made to the 3D made took affect, but as soon as I unplugged the MAF it couldn't rev past idle.

 

I didn't have much time to play with my car, but today I made several experiments that might help to diagnose my case.

First I downloaded a new copy of 96534706 3D SD 2.0 rom. Copied injector fuel and ignition tables, put 110+ ve numbers at 80+kpa in 3d VE map, but lowered the idle cells to ~70ish% to keep AFR reasonable, put JDM map sensor scaling in, and started the car. It fired up with no problems as always... ...and the whole story repeats itself...

I tried to use IAT pin instead of Fuel Temp as MAT input. That changed nothing and I couldnt see any difference. Anyway MUT 11 shows actual temperature in the engine bay, just a couple degrees higher than MAF IAT shows, as I have my GM IAT in my IM.

Despite that I have JDM MAP, I have tried to use "Omni 3 bar" and "Omni 4 bar" scalings just for giggles. Omni 3 bar behaved even worse than JDM MAP scaling. As for Omin 4 bar scaling - it surprised me that at least it gave me a chance to hold the throttle and rev my engine higher than 4K...

Anyway whatever scaling I use, whatever i put in my VE table (like 120% from 80-300 load at all RPM), I can not log load higher than 75-ish. Even when my map reads 105 KPA.

As far as I understand it's just a simple math - if my MAP reads 105 KPA and I have put 120% in apprpriate cells in 3D VE table, I should be able to see 125 Load. But whatever I try I always get 75-ish load at 100-105KPA.

I haven't tried to use any other roms including 9417.

Any input would be appreciable as I am totaly knocked down by that situation.

 

At least I am not the only one with this issue. I downloaded the pack and everytime I open it there is an error that pops up about no definition file. I have re-downloaded several times and double and triple check my addresses.

 

10isace - Thanks for the feedback.
So you used the same source files that I did..hmmmm...I did not have 94170715 working before SD...I'm coming from 96530706 and copied fuel, injector scaling & latencies, ignition, MAF Comp, inserted my 3D VE table built from MAF logging.... I'm using a JDMMAP sensor and GMIAT in the IM wired into fuel ADC....so there has to be some difference between your XMLs and mine.

Can you email me your XMLs to cdrinkh2o@gmail.com so I can filediff them?

 

^ BIGGY - I had a similar experience with 96534706 on a USDM 2005 Evo 8. That is why I am now trying 94174715.