POS part number

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I presume they are both the same on aan/aby,but are they both identical?,as one of them runs 2 coils and the other does 3.Anyone give me the part number/s please?

[S2central.net]

I presume they are both the same on aan/aby,but are they both identical?,as one of them runs 2 coils and the other does 3.Anyone give me the part number/s please?

Nuhh - they are both three channel units... One channel is a spare as its not actually wired up by the loom !

4A0 905 351 A

Approx 150 quid from stealers - old price list here - sorry !


Paul

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cheers Paul,got a couple here with numbers 4A0 905 351,from a V6, can these be used?ive noticed Audi tend to put different letters at the end but the parts seems to be identical.

[spink]

double post

[Jas11n]

The V6 one can be used James, my bro has been ragging the hell out of his 95 ABY with one of those fitted for the last 2 years.

Jas..

[spink]

excellent

[kwlw]

excellent

With V6 it's not possible to tune high HP car, due to switching time scatter. For stock, or semi stock (like RS2 specs), its ok. This is information from local chip tuner.

I'm also using V6 POS'es. No noticeable side efects.

Sau

[terrybullwon]

With V6 it's not possible to tune high HP car, due to switching time scatter. For stock, or semi stock (like RS2 specs), its ok. This is information from local chip tuner.

I'm also using V6 POS'es. No noticeable side efects.

Sau

So whats the best way around this, ADU POS? or is there an alternative?

Cheers James

[S2central.net]

ADU POS will be same as ABY/AAN.

Not sure I understand how the V6 POS is less accurate - its just an amplifier... But it is technically a differnt part so Audi must have decided it wasn't correct to share them here so maybe there is somethin in it.,



Paul

[kwlw]

ADU POS will be same as ABY/AAN.
Not sure I understand how the V6 POS is less accurate - its just an amplifier... But it is technically a differnt part so Audi must have decided it wasn't correct to share them here so maybe there is somethin in it.,

I'm also not very big expert, however turbo POS'es are something like one element per channel construction, and V6 POS'es are quite complicated inside. Maybe this means something.

Sau

[S2central.net]

Maybe its a case that the S2 POS creates more energy for the coil from the low voltage trigger pulses. And maybe the V6 variant doesn't provide enough primary energy into the coil for heavily modified S2 engines.

Hmmmmmmm

[Jas11n]

Heavily modified isn't something I know anything about, and don't want to thanks
All I know is that it works in a chipped ABY without any hassle and has done for two years.

[spink]

Is this something that can be measured using an oscilloscope?

[S2central.net]

You would need to measure voltage AND current coming out of both variants to get a true comparison.

For all I know, the V6 one could be perfectly usable for a long time - as backed up by Jas... Maybe it was just a cost reduction with some cheaper technology inside the V6 unit and thats a more numerous engine than the I5T.

Paul