aan vs adu eproms

[nemilosu]

it's ok if i put in a aan ecu eproms from rs2 ?
they will work fine ?
or exist some diferences ?

[jade]

If you use a AAN ECU with rs2 chips you will have to make a small mod to ECU

[pasbogdan]

A thing to wory is the pressure sensor in the ecu.What mod is to be done?

[nemilosu]

i read somewhwre something about an resistor.

[blackS2]

i read somewhwre something about an resistor.

Resistor R201 5,62 Kohm 1% SMD 1206 for original RS2 software AND 300kpa pressure sensor

[nemilosu]

ok, thanky you.
where i have to solder the resistor?
inside the ecu or to a wire ?
cheers.

[blackS2]

Replace Resistor R201 inside ECU

[nemilosu]

thank you.

[audi4fun]

I'm trying to find were the R201 resistor is alocated in ECU but without any success. Can somebody help me with a picture or description?
EDITED. Changing question to answer: Lower lid to be removed (that with 6 bolts) then check lower left corner.

What are the sympthoms if running on RS2 chips on ABY motornic without changing R201?

[prj]

You probably will run rich all the time, because the MAF reading will be wrong.
Or well, not wrong, but the signal won't be what the ECU expects it to be and what it is mapped for.

[Bram]

True, you need to change the R201 to 5k6 Ohm on the ABY/AAN ECU in order to get the full monty on RS2 specs.

[blackS2]

by the way... original R201 from ABY or AAN has to be 6,2 kOhm - can anybody confirm this??

so if you place a 10kOhm poti as R201 - a way to play around with fuel??

[prj]

Not fuel. MAF signal.
If you play with it and don't know what you are doing, you will mess up every single calibration that uses LOAD in the ECU.

Jens, you know you can always ask me

[blackS2]

thx... my mistake

[prj]

Btw... it's 5.6k, not 5.62k.
Not that it makes a difference, as even if you get a 1% resistor, the error margin will be larger.

I use 0.1%'s