ecu changed but still problems!

[AudiA8Quattro]

As far as i know all you have to do is re-program all the keys to the ECU, nothing else needs programming.
Is that correct Wayne?

[av_golf]

yes its a valver. how much would the dealers charge to get it programmed? has anyone on here got vagcom?

[Mikester]

If not, C2 motorsport will de-imobilise the ECU for about £100. So i dont matter what key you used, or anything.

[boneybradley]

It's vag-tacho thats is required to code key's etc..not vag-com!

and regarding the plug and play bit...as long as the ecu matches the o.e part number (see list below) then all that needs sorting is the immobiliser
16 Valve ABF
91-94 Bosch KE Motronic: 0 261 000 852/3::8A0907404 (non immobiliser)                       
92 on Siemens Digifant   : 5WP 4 066 :::::::::::037 906 024 G
        Bosch Digifant    :  5WP 4 133::::::::::::037 906 024 AB
95 on  Siemens Digifant  : 5WP 4 237/304 ::::::::::::037 906 024 AE/BE      

[AudiA8Quattro]

It's vag-tacho thats is required to code key's etc..not vag-com!

and regarding the plug and play bit...as long as the ecu matches the o.e part number (see list below) then all that needs sorting is the immobiliser
16 Valve ABF
91-94 Bosch KE Motronic: 0 261 000 852/3::8A0907404 (non immobiliser)                       
92 on Siemens Digifant   : 5WP 4 066 :::::::::::037 906 024 G
        Bosch Digifant    :  5WP 4 133::::::::::::037 906 024 AB
95 on  Siemens Digifant  : 5WP 4 237/304 ::::::::::::037 906 024 AE/BE      

Who told you that??
You can code keys on VAG-com, i have 

[Wayne]

As far as i know all you have to do is re-program all the keys to the ECU, nothing else needs programming.
Is that correct Wayne?

I believe that is correct as I looked at having it done when I changed the steering column but managed to swap the chip over.

[boneybradley]

Am I thinking of the later key's only? (I know my old mk3 one's were done by the local key cutter! and my passat wont/cant be coded on vag-com)

[av_golf]

the old ecu has the exact same part number as the new one. is it just the immobiliser then? what vag-com do i need? theres ones on ebay for about £20, am i able to do it through one of them?

[Wayne]

the old ecu has the exact same part number as the new one. is it just the immobiliser then? what vag-com do i need? theres ones on ebay for about £20, am i able to do it through one of them?

Not sure, should be able to do it with it to be honest.

[AudiA8Quattro]

Am I thinking of the later key's only? (I know my old mk3 one's were done by the local key cutter! and my passat wont/cant be coded on vag-com)

Vag-com should be able to code all cars. I didn't think vag-tacho could do it, just mileage correction, but to be honest i've never used it.
What year is your passat? i can recode my Audi A8, and thats a 1998.
The older cars have a different procedure for programming than the newer ones.