do you guys know if PCM's are interchangable between the 98 and 99 & newer models? The cars in question are a 98 T/A A4 and a 00 T/A A4. If the PCM's were swapped between these two cars, would they work?

thnks

 

The pin outs are different so you cant just direct swap.

JR

 

hmm..that sucks

you say it's not a "direct" swap. Can it be done somehow? Or is it not worth the trouble?

 

The 98's have a unique PCM. 99 & up are all the same with different programming.

Only way for a direct swap would be the entire wiring harness at the same time

 

how hard is it to swap the wiring harness?

 

It required changing the cluster, and fuel tank to use all OEM parts.

A big pain...

Ryan

 

so can i just leave the 98 pcm and harness alone and then install a 99+ engine ?

 

Yes, the 99 engine has all the same sensors in the same locations. So you can use your 98 engine harness with it. Except the 99 has a 2 wire coolant temp sensor, and the 98 has a 3 wire. So keep the 3 wire sensor from the old heads.

 

thanks
anything else different when swaping between years?

josh

 

just buy a new harness you can get one for about 550.00 At superior harness company
501 982 1050 with new plug and new wire and heat shrink boot

 

Just get a BS3