New AVCR map sensors are 4-BAR.
Which is what I have, and... probably can't use I bet.


I can't wait until this gets ported down to a HOW TO and is available for 8 Roms.
I want to try it SO bad, but simply do not understand the patch/flashing enough to be able to do it.

Someone please help the programming challenged, and, thank you so much for your hard work BEZ! You F***ING RULE!

 

It can be used, it is still just a 5 volt sensor, the voltage range will be the same, but just a different offset.

 

This will happen eventually.. 94170008 happens to be the rom thats compatible with the largest group of Evo's (2001-2004)

I have been reluctant to try doing speed density or any of the other patches because I'm still heavily dependent on piggyback devices (UTEC or ECU+) for fine-tuning.

I think the big task right now is finding an alternative sensor to use in place of the baro sensor. its REALLY important for year round drivability, and speed density already has a few drivability quirks, that you don't want to introduce any new ones if possible.

I have absolutely no aptitude for assembly language and therefore have been pretty absent from the patching side of the ECU stuff. There just isn't enough time in the day.

However, as pre-patched versions of 94170008 and definition files to go along witht them start becoming available, I will start testing it.

You don't need a JDM 3 bar sensor.. you can use a GM 3 bar sensor, or any 3 or 4 bar sensor, but you would need to do some adjustments to the calibrations in order to get things working.

 

Today I wired the GM IAT sensor directly to the ECU. So far air temp seems to match what I expect. I wired a 1k Ohm resistor in for baro input. It reads 98.5kPa which is close enough to average pressure in my area. I am still looking for an actual baro sensor to use instead. The MAFT Pro is completely removed, which was my ultimate goal.

 

Here's where I put the GM IAT sensor:


New upper piping with no MAF:

 

sexy!!! post part#s mixmaster

 

Are we going to get a how to on this one?

 

Its actually pretty difficult, not as far as wiring up the hardware, thats the easy part, but as far as coding the patch into your rom. So far only a few roms are patched, once the 94170008 is discovered the rest of the 03-04 should be pretty easy afterwards. I tried use a hex editor and paste bez's extra info into my rom, and correct all the addresses depending on where I placed it in the empty portions and only 1 table came out correctly the other 3 were screwed.

 

I am in need of some help.

If anyone has an unused or spare stock MAF that they can give to me I would greatly appreciate it. Mine caught fire and is no longer usable. This will help me figure out the baro sensor input. As far as I can tell, the ECU has the same 3.3k pulldown resistor on the baro sensor input as the 2g's. This prevents me from hooking a MAP sensor up to the ECU directly. Thanks.

 

lol sorry to not contribute, and to potentially have laughed at your misfortune, but it is quite infrequent that someone posts up something so earnest yet funny. lol "hey guys could you give me a MAF? Mine caught on fire" lol perhaps a post best left unpublished.

 

I've got a spare. I'll pm you.

 

96940011...

I know this is the often left out rom being only 05's. But...
I wanna play too!

And is there no way to simply rip the baro sensor out of the MAF? And find a way to house it in ambient air to get a real reading so as not to fudge it?

 

Man that rom is never left out, everypatch is available for it.

 

<----- Posting like my title... sorry.

Someone tell me there is a way to extract the baro sensor from the MAF... I got a couple 2g ones here dying to be in pieces all over my floor.

 

That is what I was trying to do when I set fire to my MAF sensor.