azr and asj- how do you tell

Post by **maxrs4** » Fri Dec 25, 2009 1:26 am

its probally really obvious but im new to the rs world if you hadnt guessed- how do you tell which lump you have and what is the difference!?

merry xmas and thanks

Post by **TopBear** » Fri Dec 25, 2009 1:43 am

ASJ engine only has 2 lambda probes and no SAI
ASJ = EU2 compliant

AZR engine has 4 lamda probes and SAI system
AZR = EU3 compliant

SAI = Secondary Air Injection system

I think the engine code is part of the V5 IIRC.

Post by **Virdee Autos** » Fri Dec 25, 2009 1:48 am

Engine code will also be in the service book (inside cover), and the other data sticker in the boot.

Will also be on the timing betl cover (LHS) IIRC

Post by **grizz** » Fri Dec 25, 2009 1:46 pm

It's also stamped on the front of the left head ..

Post by **S2tuner** » Fri Dec 25, 2009 1:59 pm

TopBear wrote:ASJ engine only has 2 lambda probes and no SAI
ASJ = EU2 compliant

AZR engine has 4 lamda probes and SAI system
AZR = EU3 compliant

SAI = Secondary Air Injection system

I think the engine code is part of the V5 IIRC.

Unfortunately that's wrong

Both engines have SAI and 4 lambda probes, the difference is that an ASJ ECU doesn't care about SAI or the post-cat lambdas, whereas the AZR one does, because of the EU3 emission norm.

Post by **TopBear** » Sat Dec 26, 2009 12:51 pm

S2tuner wrote:
TopBear wrote:ASJ engine only has 2 lambda probes and no SAI
ASJ = EU2 compliant

AZR engine has 4 lamda probes and SAI system
AZR = EU3 compliant

SAI = Secondary Air Injection system

I think the engine code is part of the V5 IIRC.
Unfortunately that's wrong

Both engines have SAI and 4 lambda probes, the difference is that an ASJ ECU doesn't care about SAI or the post-cat lambdas, whereas the AZR one does, because of the EU3 emission norm.

That's concerning as the lambda\SAI information was lifted from Elsawin v3.6

Post by **maxrs4** » Sat Dec 26, 2009 9:37 pm

thanks Guys ill have look!

Post by **RS4ever** » Mon Dec 28, 2009 1:30 pm

What does it all mean though?

Post by **Hiltoa** » Tue Dec 29, 2009 1:03 pm

AFAIK, ASJ=AZR-SAI

HTH

Post by **S2tuner** » Tue Dec 29, 2009 5:22 pm

Hiltoa wrote:AFAIK, ASJ=AZR-SAI

HTH

SAI is present on all these engines, I can't find the link to the self-study program for the B5 RS4 just now but I'm sure it's stated pretty clearly in there too

Post by **DutchRS4** » Mon Jan 04, 2010 12:14 am

Euro 2 and euro 3 emission (asj-azr) emission specs are mentioned in the RS4 training guide. Technically there are no differences

Post by **DutchRS4** » Mon Jan 04, 2010 3:28 am

http://rs246.com/downloads/AudiRS4B5/Do ... 0Guide.pdf

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azr and asj- how do you tell

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