My combi valve/EGR valve has a major leak so I decided to delete the whole SAI system with the block off plate. My only question is how do I re-route the vacuum line from the combi valve to the N112? I've searched around for awhile now and haven't found a specific answer. Car is a B5 1.8T ATW. Thanks

 

I just deleted the SAI system on my car. Pulled out the pump and plumbing, combi valve (replaced with 034 Motorsport block-off plate), N112 valve removed from the car, and a resistor plug attached to the electrical connector in place of the N112 valve.
I'm also deleting the vacuum source line that the N112 hooks up to. But in your case, if you remove the N112, you would also need to cap the vacuum source where the N112 attaches.

Alternatively, you may be able to leave the N112 in place, and simply cap the vacuum line that normally routes to the combi valve. No real need to reroute it; you could just cut it down and put a plug in it.

This might help if you haven't seen it already:
*DIY* - B5 1.8T Vacuum/Check Valve/SAI/PCV - Delete & Simplification

 

I'm just gonna leave the N112 in place it seems easier to do that. That thread is where I learned the process from, and from my understanding you only need the resistor plug if you take out the N112. I didn't know I could just plug the line instead of re-routing it. Thank you!

 

My guess is that the N112 simply controls vacuum availability to the combi valve, and the combi valve is actuated open/closed with vacuum (just a theory).
The line going to your (nonexistent) combi valve will still have the potential for vacuum, so you should cap it to prevent air leaks. Simple

 

Very simple! Thanks for your help MetalMan

 

I found this the other day: *DIY* - B5 1.8T Vacuum/Check Valve/SAI/PCV - Delete & Simplification

 

Thanks A4TurboGuy but MetalMan posted that link above already, lol

 

lol. Ooops.