How does the K04 wastegate/boost controller work?
How does the K04 wastegate/boost controller work?
There seems to be a lot going on here.

1. Internal Wastegate
2. Boost Supply Line
3. Boost Supply Line
4. By Pass Valve

1. Internal Wastegate
2. Boost Supply Line
3. Boost Supply Line
4. By Pass Valve
Last edited by ebristol; Aug 26, 2010 at 03:51 PM.
I'll have to look at my turbo again but one is for the for the bypass (probably 3) and the other runs to the solenoid on the intake manifold, which goes to the cold side charge pipe. If you're installing an aftermarket turbo all you need is:
1. Wastegate at diaphragm
2. To cold side charge pipe
3. Open
1. Wastegate at diaphragm
2. To cold side charge pipe
3. Open
Last edited by Wickedlsj; Aug 26, 2010 at 01:08 PM.
1, pressure inlet for the wastegate diaphram
2,3 are the boost feeds for the electronic boost controller solenoid
4 vacuum line for the BPV
you planning on installing it on an LSJ? if so I've already done it and can help out a bit.
2,3 are the boost feeds for the electronic boost controller solenoid
4 vacuum line for the BPV
you planning on installing it on an LSJ? if so I've already done it and can help out a bit.
BPV?
Well I would never go straight turbo but a local guy was talking about doing it to his LSJ. So I thought I would do some digging around.
Did you use the boost controller on the K04 or did you use your own? I am going to search for your threads.
Did you use the boost controller on the K04 or did you use your own? I am going to search for your threads.
right now i'm using a manual boost controller, plans are to hook up this boost controller to the stock SC boost bypass harness if i can figure everything out. looks promising so far, just need an EV1 connector.
Gotcha. So it connects some where on the IM?
So the connection on the K04 boost controller uses a EV1 connection? So then you just need to find out how the PCM communicates to the boost controller. My guess is that it would be based of some sort of linear voltage signal.
You don't have a build thread started for this turbo setup do you? Cause I couldn't find anything.
You don't have a build thread started for this turbo setup do you? Cause I couldn't find anything.
Gotcha. So it connects some where on the IM?
So the connection on the K04 boost controller uses a EV1 connection? So then you just need to find out how the PCM communicates to the boost controller. My guess is that it would be based of some sort of linear voltage signal.
You don't have a build thread started for this turbo setup do you? Cause I couldn't find anything.
So the connection on the K04 boost controller uses a EV1 connection? So then you just need to find out how the PCM communicates to the boost controller. My guess is that it would be based of some sort of linear voltage signal.
You don't have a build thread started for this turbo setup do you? Cause I couldn't find anything.
i do have one, just not on here(mavens place-"did some work today"). and yes i believe it is linear voltage much like the LSJ bypass valve solenoid. there's even some nifty controls like steady state, prop speed and gain available in HPT. hopefully i can make it work just like a normal electronic boost controller.
Makes sense.
But you wont be able to control the K04 boost controller through the LSJ PCM unless you can adapt it to the SC by-pass valve signal right?
Did you have to replace the coolant cross over pipe on the LSJ or where you able to clock it to allow enough clearance for the turbo?
Did you have to replace the coolant cross over pipe on the LSJ or where you able to clock it to allow enough clearance for the turbo?
Makes sense.
But you wont be able to control the K04 boost controller through the LSJ PCM unless you can adapt it to the SC by-pass valve signal right?
Did you have to replace the coolant cross over pipe on the LSJ or where you able to clock it to allow enough clearance for the turbo?
But you wont be able to control the K04 boost controller through the LSJ PCM unless you can adapt it to the SC by-pass valve signal right?
Did you have to replace the coolant cross over pipe on the LSJ or where you able to clock it to allow enough clearance for the turbo?
yes you must get the LNF coolant cross over tube, no way around it, its not even the turbo that won't clear it, its the manifold itself that hits. the LNF manifold is significantly bigger than the saab one.
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