stock chips

[Durr McDanks]

Where is the best/ cheapest place to buy stock AAN software chips? My car isnt firing and it has a tune from MRC so I am wondering if it is the software.

[Acidburn]

pm spink on here, he should be able to sort you out

[Jamo]

Where is the best/ cheapest place to buy stock AAN software chips? My car isnt firing and it has a tune from MRC so I am wondering if it is the software.

I very much doubt it's the chips

have you investigated the problem?

[prj]

It can not be the software.
You would really have to try on purpose to not make the engine start.

[UrS4boy]

Where is the best/ cheapest place to buy stock AAN software chips? My car isnt firing and it has a tune from MRC so I am wondering if it is the software.

Most likely that you either have a dead G6 fuel pump or a dead G40 cam position sensor. Go to this AAN Engine Bay Device Map and have a read on those two topics (click on the appropriate words beside the diagram):

http://members.shaw.ca/speedtek/UrS%20Engine%20Bay%20Device%20Map.html

[Wheeljack]

agreed...tough to blame it on the software...maybe a bad ecu...but many more details necessary...have you done a step by step troubleshooting sequence prior to blaming the chips...if you are in usa, you should be able to easily source a stock aan ecu to try in place of yours...

more detailed questions = more appropriate help

[Durr McDanks]

This what I have done so far:
Wiring:
I recently did a AAN swap into my b3 90q. I used pin15 out of terminal B for both of these AAN pins:
black/green pin 27. ECU Power supply Terminal #15 (Ignition +12V)
black/red 37. Voltage Supply (+12V) input with ignition on for all 5 Fuel injectors (N30-N83), Mass Air Flow Sensor (G70), Evap canister freq. valve, Wastegate Freq. valve, Idle air control valve ( Fuse #72)
Pin 18 is also hooked up the battery.

Also, I swapped out the fuel pump relay with one from a s4 (relay 208) and spliced pin 3 (from aan) into pin s on terminal B.

Troubleshooting for having no spark:
1. Check timing and it is timed properly
2. The fuel pump is cranking fuel, but I dont believe it is making it to the spark plugs because the spark plugs arent wet
3. Ran codes and all I got was a G28 sensor code
4. Ran a voltmeter and got a signal from everything except the POS sensors.
5.Checked all fuses they were good
6. I am using an AAN flywheel so the tooth didnt come off.
7. Looked at the cam sensor and nothing broke off (was a little dirty though)
8. Looked at the G4 and G28 sensors and cleaned off the metal debris

[UrS4boy]

I suspect that you do not have the 208 J17 FP relay wired incorrectly. The AAN ECU controls the J17 FP relay based on an initial signal from the cam position sensor. The J17 controls the fuel pump and a whole bunch of stuff, including the injectors, as explained here:

http://forums.quattroworld.com/s4s6/msgs/22583.phtml

A more comprehensive explanation of the Motronic ECUs T55 pin-out is provided here:

http://forums.quattroworld.com/s4s6/msgs/21009.phtml

Good luck.

[Durr McDanks]

Based on this: (even though this for a b4 fusebox I believe, but I hear that the B3 is almost the same) How should I wire the FPR?

http://www.soften.ktu.lt/~kwlw/20v/fusebox.gif

[Durr McDanks]

So the input(pin 3 AAN ECU) is wired to pin S on terminal B currently. But I need the output wiring. Anyone on what the best route is for this?

[UrS4boy]

So the input(pin 3 AAN ECU) is wired to pin S on terminal B currently. But I need the output wiring. Anyone on what the best route is for this?

In addition to my PM to you on this question, I just had a look at the B3 wiring diagram that you provided the link to. My conclusion is you are going to need to install another relay to do the things related to the AAN, i.e. a proper AAN J17 FP relay. The one used in the B3 to fire the FP (and if you note, the heated side of the oxygen sensor) is already very busy (i.e. some lights, etc). As a result, while you might get power the FP, you are not getting any power to the injectors, the N75, the N71 or the N80, via the 87A pin of the AAN J17 FP relay, which you need. See the AAN Motronic diagram below.

[Durr McDanks]

but isnt that why I wired this to pin 15(switched power source) on terminal B?:

black/red 37. Voltage Supply (+12V) input with ignition on for all 5 Fuel injectors (N30-N83), Mass Air Flow Sensor (G70), Evap canister freq. valve, Wastegate Freq. valve, Idle air control valve ( Fuse #72)

Or why couldnt I splice pin 37 to wire to 87a?

Because I am getting a switched power source from pin 15 on terminal B for pin 37 but according to the motornic diagram it looks like I should be using pin 87a in the fusebox for pin 37 ECU.

[Durr McDanks]

So I wired 87a and still no luck, but I am getting a cam sensor code now? So I will replace that but I wonder why this code popped up out of nowhere.

[UrS4boy]

So I wired 87a and still no luck, but I am getting a cam sensor code now? So I will replace that but I wonder why this code popped up out of nowhere.

It may have popped up because it has been the problem the whole time (note that I suggested this much earlier). Was Ben K. in Calgary not able to help you with the swap wiring? In any event, have you seen the ABY wiring handbook that Paul Nugent developed to help people like you doing swaps and/or diagnosing their problems:

•http://www.s2central.net/S2_Schematics/ABY_Wiring.pdf ?

[Durr McDanks]

He never said anything back, but from the looks of this (even though there are a couple of differences) I have it wired right.