Low Boost (0.35 Bar) Rb25Det

[GTSBoy]

Sorry man. I can't see anything except all that white paint on the dashboard. <shudder>.

Max boost is obtained when you don't connect the wastegate to the boost source at all. Of course you should block the pipe coming from the boost source to plug the leak - but the wastegate line could be left flapping in the breeze.

BEWARE that this is massively dangerous. You will be running uncontrolled boost, it could very easily spin the turbo fast enough to spit the turbine off. SO IT IS NOT RECOMMENDED.

I myself have done it, but you have to be massively sensitive and careful with the throttle. Basically what you're looking for is proof that if the wastegate has no signal to it, then the boost can go way higher than you would like it.

I still reckon your problem is in your plumbing. Go back to post #17. If you have a boost control system using the factory solenoid which is regulating a bleed, then you simply MUST have a restrictor in the right place or you will do nothing to the boost signal and will only get wastegate pressure - which appears to be what you have.

[Tungstenaxe]

Sorry man. I can't see anything except all that white paint on the dashboard. <shudder>.

Max boost is obtained when you don't connect the wastegate to the boost source at all. Of course you should block the pipe coming from the boost source to plug the leak - but the wastegate line could be left flapping in the breeze.

BEWARE that this is massively dangerous. You will be running uncontrolled boost, it could very easily spin the turbo fast enough to spit the turbine off. SO IT IS NOT RECOMMENDED.

I myself have done it, but you have to be massively sensitive and careful with the throttle. Basically what you're looking for is proof that if the wastegate has no signal to it, then the boost can go way higher than you would like it.

I still reckon your problem is in your plumbing. Go back to post #17. If you have a boost control system using the factory solenoid which is regulating a bleed, then you simply MUST have a restrictor in the right place or you will do nothing to the boost signal and will only get wastegate pressure - which appears to be what you have.

Thanks! will try and see how it works. I think i'll have some time over at work later today, i'll see if i can get the EBC to work as it should.

However, i use this

And the solenoid only have a IN and a OUT connection. So my question is, how do i connect it the right way? Do i need a T? or should i just connect the intercooler pipe to the IN port and the OUT port to the wastegate?.

Thanks for the fast answer btw

[Dose Pipe Sutututu]

no T piece...

pressure (from intercooler, pre-throttle body) goes into IN, the OUT then goes into your actuator.

Rip everything else out, and block that nipple on your intake pipe.

[Tungstenaxe]

no T piece...

pressure (from intercooler, pre-throttle body) goes into IN, the OUT then goes into your actuator.

Rip everything else out, and block that nipple on your intake pipe.

Thanks, will try it out later today .

I'll be back too keep you updated!

[GTSBoy]

AVCR? I think that vents internally. So you just connect the in to the boost source and the out to the wastegate. No tees, no restrictors, no messing about. Find a manual for that model of AVCR and check out the connection diagrams. I just installed an older Profec and had to source the proper manual just to make sure I didn't make any silly mistakes. Do some googling.

[Tungstenaxe]

Hello again, i tried my AVC-R and it still doesn't work.. (connected the solenoid between the intercooler pipe and the wastegate). However, there is a hose coming from the avc-r.. should it be connected to this?.



And here is a pic of the solenoid



Gonna try my mechanical boost controller tomorrow if i have time. Btw, shouldn't the ebc solenoid make a clicking sound?.

Thanks .

[Ben C34]

Get rid rid of that bov.

Yes the solenoid makes a clicking sound when trying to control boost . Which it only does when out of vacuum so it's not clicking all the time.

You can apply pressure via a bike pump to ebc pressure source to see if it does anything.

[GTSBoy]

Yes, the AVC-R needs to have its MAP sensor line connected to the plenum. NOT the line that goes to the solenoid. The on-controller MAP sensor. Without that it will do nothing.

[GTSBoy]

Yes, the AVC-R needs to have its MAP sensor line connected to the plenum. NOT the line that goes to the solenoid. The on-controller MAP sensor. Without that it will do nothing.

[GTSBoy]

Yes, the AVC-R needs to have its MAP sensor line connected to the plenum. NOT the line that goes to the solenoid. The on-controller MAP sensor. Without that it will do nothing.

[GTSBoy]

Yes, the AVC-R needs to have its MAP sensor line connected to the plenum. NOT the line that goes to the solenoid. The on-controller MAP sensor. Without that it will do nothing.

[Tungstenaxe]

Get rid rid of that bov.

Yes the solenoid makes a clicking sound when trying to control boost . Which it only does when out of vacuum so it's not clicking all the time.

You can apply pressure via a bike pump to ebc pressure source to see if it does anything.

Will do it tomorrow and try it again. Had the stock one plugged in before and it still acted like this. But going to try to go back to so much stock as possible, so i can find out where the problem is.

Ah, haven't heard it clicked once.. is there any way to find out if it really works as it should? maybe try to connect the + and - to a battery? or is it a bad idea?.

Cheers for the fast answer thou

[GTSBoy]

Yes, the AVC-R needs to have its MAP sensor line connected to the plenum. NOT the line that goes to the solenoid. The on-controller MAP sensor. Without that it will do nothing.

[Tungstenaxe]

Get rid rid of that bov.

Yes the solenoid makes a clicking sound when trying to control boost . Which it only does when out of vacuum so it's not clicking all the time.

You can apply pressure via a bike pump to ebc pressure source to see if it does anything.

Will do it tomorrow and try it again. Had the stock one plugged in before and it still acted like this. But going to try to go back to so much stock as possible, so i can find out where the problem is.

Ah, haven't heard it clicked once.. is there any way to find out if it really works as it should? maybe try to connect the + and - to a battery? or is it a bad idea?.

Cheers for the fast answer thou

[Tungstenaxe]

Will do it tomorrow and try it again. Had the stock one plugged in before and it still acted like this. But going to try to go back to so much stock as possible, so i can find out where the problem is.

Ah, haven't heard it clicked once.. is there any way to find out if it really works as it should? maybe try to connect the + and - to a battery? or is it a bad idea?.

Cheers for the fast answer thou

[Tungstenaxe]

Get rid rid of that bov.

Yes the solenoid makes a clicking sound when trying to control boost . Which it only does when out of vacuum so it's not clicking all the time.

You can apply pressure via a bike pump to ebc pressure source to see if it does anything.

Will do it tomorrow and try it again. Had the stock one plugged in before and it still acted like this. But going to try to go back to so much stock as possible, so i can find out where the problem is.

Ah, haven't heard it clicked once.. is there any way to find out if it really works as it should? maybe try to connect the + and - to a battery? or is it a bad idea?.

Will try the bike pump method aswell!.

Cheers for the fast answer thou

[Ben C34]

It's extremely likely your stock bov is leaking due to the way it's hose is blocked.

It needs the boost pressure in the top of the diaphragm to hold it shut when on boost . The spring on its own isn't strong enough to hold it shut against the boost pressure.

Connecting direct to the battery is fine.

But you might as well do what I said with the pump to check the whole ebc at the same time.

[Tungstenaxe]

Oops, forum lagged out i think?. Tried to send the post but nothing happend and now it all showed up soz for that!.

Yeah, got help from my brother a year ago or so when we plugged it in the first time. Gonna check over those things and then i'll try again .

I'll be back with how it went. Thanks alot guys, i appreciate all the help .

[Tungstenaxe]

Sorry for the late answer, i've been really busy.

The problem is solved now thou, the SSQV was the problem .
Thanks alot for all the answers and all the help, you saved me alot of time, work and money .

[Ben C34]

Glad it's sorted and cheers for the update.

Such a shame a poxy bov can cause so many issues!

Edited July 5, 2014 by Ben C34