Nope, never did. I plan to revisit it again sometime soon with my new injectors, E85, etc. But, I'm nearly certain it is ROM code related, so nothing I could do.

 

today I installed MAP sensor (5 bar aem sensor) and GM IAT sensor wired to fuel temp input. The car is EVO 8 EDM model (original rom 96530006), I used the ROM file and XML for it from the 1st page of this thread. Changed SD option FUEL temp ADC input for MAT (set it to 0E). The car started straight away, but when I started logging with evoscan MAT temperature shows 170-190 (170 on a warm car, 190 on a hot car) degrees wich is about 70-100 degrees C, can someone tell me please what I've done wrong. What should I adjust to sort this ?

Also ECU throws PO110 error - something wrong with IAT temperature

 

Yaroslav contact pls me nikita@gtclub.com.ua
Have anyone installed aem 3.5 bar map sensor? Can you show your SD scalling and VE ?
Thank You.

 

Just a quick question regarding implementing the IAT sensor into the stock maf harness...If the stock maf's IAT sensor is scaled such that the engineers realized that 70* intake temp was not going to be 70* out but much higher, wouldn't it make just as much sense to assume that the scaling would then be off if placing an aftermarket IAT sensor such as a GM unit into either the upper IC pipe or intake manifold?

 

3.5 bar works fine. Just follow the directions in post #2 of this thread.

 

When you tune for SD, your goal is to match your maf based temp+baro corrected loads to SD based temp+baro corrected loads. So, any discrepancy will be accounted for in the tune.

But you are right in the fact that any temp compenstation tables, such as timnig trim, etc, should probably be adjusted to allow higher temps before trim, since our temps with the IAT will now be higher than what was seen with the MAF IAT.

 

I think for the time being I'm going to install my GM IAT sensor in my intake pipe and see how the readings differ from the stock IAT sensor to get an idea of how close the two sensor's scalings are and correct the SD tables from that. Once I can figure out the new corrected scalings I'll relocate the sensor to the intake and see what the differences read.

 

Has anyone has any compatibility issues with the 94170015 SD patch and Tephra mod 5.10? If I copy the SD xml code over to my old xml, my rom doesn't recognize any of the values, and if I copy the tephra mod xml coding over to the stock xml with the SD xml values and open the SD rom it doesn't recognize the tephra mods. All I want to do is keep the slow flash/fast flash knock light feature and the 1byte to 2 byte conversion...any ideas?


Also, I gave the 96530706 vs.5 rom a shot and I'm confused even more...is that just an add on xml code as well to be used with the new rom? If I open the rom with the new xml I don't see any fuel or timing maps.


*Edit* Yeah I'm a retard, finally figured 96530706 rom out, I didn't realize you had to keep the old xml with the addition of the new one added in lol. Gave it a quick trial run to see how the idle was with the trim feedbacks and such to help me out with my friend's Evo ecu swapped eclipse with the standard 96530006 rom.

 

I'm having a new little problem and I'm looking for some troubleshooting help.

After a fair amount of work (replacing transmission) I started the car and picked up an AIT sensor CEL. With SD implemented does this code now actually mean my MAT sensor or should this code be disabled? I'm wondering if in the work that I did I didn't manage to damage my MAT sensor pigtail. I also don't have a laptop with evoscan or ecuflash on it because mine was stolen so I can't simply log whether I'm getting MAT readings, I'll be working on fixing this quickly but in the mean time I was hoping for some direction.

95630706-t5 with MAT going to fuel temp input.

 

Updated rom with 5 bar sensor using speed density with all the mods in my sig.

Note the rom is 7 zipped

https://www.evolutionm.net/forums/at..._rescaled2.zip

 

guys, can someone explain please, where this formula came from

<!-- ** AEM (Kavlico) 3.5 bar ** -->
<scaling name="MAP 16bit" units="kPa" toexpr="x*0.4213-43.1" frexpr="(x+43.1)/0.4213" format="%.1f" min="0" max="400" inc="0.4213" storagetype="uint16" endian="big"/>

and how can I make a formula for a sensor, wich isnt listed here ?

 

^What sensor do you want to use? You might not need to reinvent the wheel.

 

guys, got my speed density working today, load is matching kpa read by map sensor.

I am having problems tuning load below 100. AFR doesnt match at all the values in the map. To tune my iddle to 14.7 i need to set my map to 22.9. Also the car feels very unstable, real afr shown by innovate lc1 jumps from 10-17 while driving with no boost, when I start accelerating . I've never seen such problems on MAF based setup.

In the load from 100 to 280 everything is fine. Car runs well, almost matching afr written in the map, no problem tuning this part of the map.

Any suggestions.
Car is evo 8 (avc-r and exaust).

 

EDIT: I mispoke below. If you need to put 22 into your fuel table, your load is too high, not too low. Sorry!

Sounds like the load values are running too low in vacuum (i.e., below 100 kPa absolute). You need to adjust the MAP VE table to increase the loads corresponding to whatever MAP reference points you have below 100 kPa.

 

The load values should not necessarily match kPa. If you are trying to keep your fueling and timing tables similar to where they already are, load will not match kPa thoughout. While it's possible to tune it that way if you make a lot of adjustments to the MAF tables (see jcsbanks "easy speed density" thread), the way most people are doing it is to try to keep their load values similar to what they had with the MAF.

If your car is running lean in a particular kPa range, then you need to adjust the kPa/load VE table so that at a given MAP, your SD load is set higher. When the car goes into a higher load it gets more fuel, even if the AFR in the fuel table is exactly the same. The relationship between load and MAP varies through the RPM and load ranges and will depend on your cams and turbo. But, generally speaking, in vacuum, you want to increase the loads if you are running lean and decrease them if you are running rich. Looking at what the fuel trims are doing will help you to determine what's going on, as will looking at the AFR values that you are having to put in the tables to get the fueling right.


EVO8LTW, Thank you for your reply.