Do i need to change the r201 in my aan ecu

[vidar skotheim]

Hello !!
I have some eproms from a rs2 ecu with 511 ccm orange injectors .
now i have fitted this into a aan ecu (with 3,3bar map) and it works ok in normal driving , but i am a little worried about this r201 that i maybe need to change ?
How can i controll if i need to change it ?
Does somebody have a picture of it ?
Is it related to the pin 7 and 25 on the ecu that should give 19.36kohm ore 18,77kohm

Best regards
Vidar

[UrS4boy]

Calling prj or Paul N. to the white courtesy phone

This should be right up your alley.

[prj]

Don't play with random chips when you don't know what you are doing.
Best case it will run like crap, worst case, you will screw up your engine.

And whether you have to change the resistor or not, depends on what the software is written for.
Send me the .bins and I can take a look.

[vidar skotheim]

The car works very good . so i am not afraid it will brake down the wide band measuring also looks good , i have measured between the pin 7 and 25 on several ecu`s and they are about 19.10 kohm , so there are no difference between my ecu`s .

[vidar skotheim]

Don't play with random chips when you don't know what you are doing.
Best case it will run like crap, worst case, you will screw up your engine.

And whether you have to change the resistor or not, depends on what the software is written for.
Send me the .bins and I can take a look.

I am going to copy some of the eprom`s maybe next week at work, so then i can save the "bins" on the computer and send some to you .. this are mtm delivered by dahlback

[pasbogdan]

I am not shure you will be abble to copy the eproms.
What was the setup(turbo,injectors,fpr) that the mtm was made for?
If the software got to you by paying(not a copy) they should answer your questions,members from here that sell soft offer good aftersale services.


Regards,

[UrS4boy]

I am going to copy some of the eprom`s maybe next week at work, so then i can save the "bins" on the computer and send some to you .. this are mtm delivered by dahlback

Real MTM software has encryption board that goes with fuel/timing the chip. No encryption board = no worky.

[prj]

lol, those boards are bypassed in 5 minutes.
Hell, you can read out the fuel chip over a hidden protocol over OBD if you are lazy. Otherwise stick it onto any development board and just read it out with a uC and dump it to serial port.

Anyone who knows electronics can bypass these things.

[vidar skotheim]

I got encryption board on fuel chip and the turbo pressure chip(strange) !!!
And i have copy and tested the fuel chip already so that is not a problem .
I id buy this used so i don't have anybody to contact for information on the programs , but it looks like they are to a aan ecu , i have measured between the 7 and 25 pin on several ecu`s and the rs2 ecu has 18,56kohm(51) and aan has 19.09kohm the ecu that was delivered with my mtm chips is also 19,09(05)kohm and a 3b ecu has also 19,09(05)

Is it possible to copy the chip when it is on the encryption board ? so i dont need to use this encryption board`s ? ore is it more complicated ?
Will put the programs on my computer now and send it to someone who could read it in a program ( if i don't get my self a program)

[prj]

It is possible, but not with a standard programmer.
CE/OE needs to be toggled between every read, most programmers just keep it high all the time, and the logic chip on the encryption board just checks for that.

[vidar skotheim]

Ok then i will use the encryption boards , but it is hard to get this encryption board`s and i only got 3 off them so i will use it only on the fuel chips and use original turbo pressure chips , i am not using the n75 anyway ..
Do you have a mail address so i can send the program to you PRJ ?

[vidar skotheim]

Dose anybody else have any other measurements between the 7 and 25 pin on the 20vt ecu`s ?

[prj]

Bad idea to not use N75.
You need a proper custom map for your car, not random chips

I pm-d you address.

[prj]

Dose anybody else have any other measurements between the 7 and 25 pin on the 20vt ecu`s ?

What's there to measure?

R201 is MAF related. You either have RS2 calibration for your MAF or you have AAN calibration.
If you use the wrong resistor with the wrong calibration your LOAD will be wrong so too rich and too little timing or too lean and too much timing.

Which resistor to use depends on software...

[vidar skotheim]

It is "originally" with rs2 MAF and 19.09kohm between pin 7 and 25 , i am now driving with a original bottom on the engine so i cant use the turbo chips now because then it will be about 2,1-2,2 bar pressure , only driving with 1,6 bar now .