K03s swap issue

vita.srutek

Active Member
Jan 25, 2012
22
0
czech rep.
Hi,
I made K03s swap. Parts were OK, car is running. But there is a problem. My old K03 had 2 vacuum inputs into wastegate (stock). I made a picture of it.
From unknown valve behind MAF one hose goes to aluminum tube between turbo and IC. And the second one goes to top input into wastegate like I paint.
Second input on wastegate goes to N75. This is how it was stock.

After turbo swap there is only one input in wastegate on new turbo. So my question is, which valve should control wastegate? And where should go left one hose?

Thanks anyone for help.
I read few swap topics, but everywhere is written that swap is part by part.
 

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WeeC

Full Member
Aug 5, 2004
240
1
Glasgow
Excuse the state of the engine bay but here goes

1) This is a very helpful diagram for you to follow through:

50191877541_1aa9938f7f_b.jpg


2) Actuator pipe I think you are referring too:

50192107802_218a3980d8_k.jpg


3) That pipe goes into the N75 valve as follows:

50191846536_e93724365b_k.jpg


4) The bottom pipe from your BOV goes to the intake pipe as follows:

50191298633_3dd65acdeb_k.jpg


I've done the SAI (N112) and N249 delete so your piping might be slightly different.
 

vita.srutek

Active Member
Jan 25, 2012
22
0
czech rep.
Oh, thank you very much! :)

As you can see, I made ECO delete too. But there was a problem. I made it in quick time. I was always wondering what valve I left on top of engine. Now from your diagram it turns out it is N249. I dont know, why it was not removed with N112 and SAI.
So now it is simple. N75 ( my whole 1.8t life I thought it is on the engine) is behind air filter, one hose goes to wastegate, one hose to aluminium tube.
WeeC, thank you once again!
Have a nice day.
 

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vita.srutek

Active Member
Jan 25, 2012
22
0
czech rep.
And one issue I am facing. On K03 there were no boost drops ( = limp mode). After swap on bigger load (3rd and higher gear with full throttle) I get no boost until throttle is released. Can it be because of unplugged N249? So I should do N249 delete? Or should I leave it?
 
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