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Help not boosting over 10PSI. WTF!

Hey guys i was reading my boost gauge the other day thinking that my boost was set to 12psi. Its only reading 10psi. I have recently put a intercooler on and have resulted in the following setup for my boost controller.

Hes the situation. My boost controller - turbosmart one. is connected to the bov vacum line and the wastegate wtf.

Is this right? I also cant connect the vacum line to the turbo pipe as there is no plug to connect to. And i have already disconnected the stock boost controller.

any pics welcome, thanks in advance

AK

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I have a Turbosmart Bleed T on my 32 and you don't put it anywhere near the BOV vacuum pipe!!! It tee's into the line from the compressor to the wastegate actuator (the little round thing on the outside of the compressor cover. That is where it has to "bleed" off air to fool the wastegate into thinking it has to wait 'longer' until the factory 7 or so PSI boost is reached, therefore having to make more boost to get to the seemingly 'factory' level! Hope this helps also...the bleed valve arrow must be pointed towards the wastegate actuator, not towards the compressor cover. PM me if you want any more details... Good Luck!

ok ive given that a go but i connected a hose appearing from the turbo out piping going to the throddle and another to the wastgate. Now its boosting unlimited boost ? I cannot control it!

Does anyone know why cause it boosted to 14psi but goes higher. might blow the turbo if it happens to boost high.

thanks in advance

AK

dude..

it's quite simple..

On a stock R33 RB25 setup, there is a hose that goes from the wastegate acutator diaphram (the thing that is like a little cylinder that sits next to the tubo) to the standard boost solenoid, which in turn connects to a little nipple on the intercooler pipe near the turbo somewhere.

All you need to do is connect the bleed valve in place of the standard boost solenoid.

the direction is like so.

From intercooler pipe, to the bleed valve, out of the bleed valve to the wastegate acutator diaphram nipple.

The way it works is this.

The factory computer sends a message to the factory solenoid to open the wastegate fully by "X"psi (I think it is 7psi on the R33).

The solenoid does this by allowing some air pressure to go through to the diaphram.

You accelerate, the boost builds up, the solenoid starts to open the wastegate.

All you are doing is replacing this solenoid with the Bleed valve.

so you need to disconnect the slenoid and use the hoses off it to connect the bleed valve.

Make sure it goes the right way.

The bleed valve should have come with directions or at least a directional arrow to show the direction of flow.

Hose from Intercooler pipe goes IN to the bleed valve and the other side connects to the wastegate.

Make sure that you have the valve completely open at first so that it is not boosted at all to start with.

then you close it up a little and go for a drive, then adjust more as you need.

If you need more help, PLEASE take it to a performance shop.

GTST, you forgot to mention that there is also a BOV return line outlet, which runs a hose to the factory boost solenoid...

WLD747, your boost controller should run like this;

intercooler piping oulet - boost controller - wastegate

You need to blockup you BOV return line (it's on a hard bit of plastic near your wastegate acuator). Leave your factory boost solenoid plugged in.

I'd go and buy some good high-temp hose with clamps, as the factory hosing is shit and splits easy.

Hope this helps :(

Wild747,

Any vacume source is fine for opening the wastegate (even if it is tee'd to the BOV )you then fit the turbo smart restrictor between the source and the wastegate.

if it is a bleed it also go's between the the vacume source and the wastegate.

Always start setting boost with the valve fully closed as your turbo wont take too many of those over boost's

adjust one click at a time even if for the first few clicks dont seem to affect boost levels.

Regards

Damqik

  • 8 months later...

i've got the same problem sort-of with my mates car i've hooked a few valves up in other cars but i did his and it don't make any difference its a r33 with standard ic pipping off the lil vacum nipple i put it as:

nipple-standard boost solenoid--- wastegate

|

bleed valve

wat am i doing wrong it runs 7 pounds without the standard boost solenoid and 9 with it

wat else can i try

thanx

jeff

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