toddk911

J Chen:

So yo uahve the Reliaboost forst as your relief, and then the regulator correct?

Which regulator are you using?

DLS

I´m thinking of building this, i have calculated the cost for it and it will cost me about 110$ in parts
But i´m thinking of skipping the one-way valve, i don´t think it´s necessary if i bleed out the air with the regulator. (there can´t be any pressure between the wastegate and the regulator if it´s connected so that it bleeds to the atmosphere)

Byt if you use a pressure regulator that cuts back the air not bleed out then you need a one-way valve to release the pressure between the wastegate and the regulator.

I hope that somebody understand my thoughts

Douglas Sorrells

Well I reinstalled the one way valve this past weekend. It really seems to help the spool time between 2nd. & third, as in reduces that spool time to zero.

This is the setup as I have it installed now.

toddk911

So even with the Tial you noticed a difference using the check valve?

Are you running single or dual port?

toddk911

Doug: What gear were you in when trying to judge the full boost/rpm ???

J Chen

Hi Toddk,
I'm using a Japanese made regulator which has a built in
pressure gauge. The thing I like about it is that it is only
about half the size of the Norgren regulator.

jimbo1111

http://www.boostcontroller.com/index...6category%3D26

I think you guy's missed this. I posted it way back. This is exactly what your trying to build. Why would you want to build it for a $100 bucks when you can get it in such a small package.

Douglas Sorrells

Toddk911, Tial in single port mode, I would be rolling along in 2nd about 30 mph & floor the pedel and just let it build. I've got to take a video of how quickly it spolls to 20 now, it's unbelivable & yes even with the Tial. I am really amazed with it now, it's just incredibly quick. I am literally at 20 psi of boost in third as soon as I get my foot back in the gas after the shift. Zero spool time in 3rd.

jimbo1111

are you saying that that controller allows you to both control max boost level and also boost speed?

Jchen, How about some details/pics on the regulator your using? I'm interested to see.

jimbo1111

Yes. That's exactly what I'm saying. It has a ball and spring in series with a bleed valve.

Douglas Sorrells

Well that is pretty cool then & Yea I didn't understand that. Do you know anyone that's used one?

Duke

I have trouble understanding why anyone would pay over $100 for any MBC when you still have to deal with different boost under different weather etc. Say what you want about "ricers" but IMHO they don't cheap out when it comes to stuff like this.
It's about controlling your boost! It's pretty important stuff...

Douglas Sorrells

This is a post by missing2 who is using one of the turboxs controllers & he is complaining about lag? Anyone getting quick spooling results with the turboxs controller?

jimbo1111

No I don't. It is the same thing as what you have built.
I am a firm believer that the bleed type of boost controller is the best for a dual port wastegate. I will explain.
A dual port wastegate with a bleed type mbc that has a 1 bar spring will not bleed exhaust on buildup because boost pressure passes through the mbc to the top port of the wastegate and helps hold pressure down on the spring. the pressure that goes through the mbc gets added to the spring rate to maintain the setpoint. 14 psi sideport and 20 top port will give you 6 psi of clamping force above the spring rate. holding the wastegate valve closed with greater force than just the spring rate alone. The reason why you are seeing faster spoolup than some others here. Is because of the smaller turbo/turbine you are using. If you don't believe me try hooking up your wastegate in a dual port configuration. I will bet that you will get the same if not faster spoolup.
Something I haven't tried yet that I think will help on spoolup is to tap a port on the discharge of the turbo for the mbc. There is more pressure before the intercooler. This would help to have more pressure on the top port than the side port witch is manifold pressure. To4b's have a tap right on the turbo.
Plus: If by chance your line splits or something goes wrong with your regulator and holds back boost to the wastegate. I can bet that you will blow your motor from overboosting. In a DP configuration. If the line splits the spring will save you.

Douglas Sorrells

Actually any faster from the way it is now would be undesirable. It's now almost too fast as it is, but I would be intersted is seeing how it is supposed to be set up under the dual port mode? Do you simply hook the line from the boost controler to the top of the wg and a line directly from the intake to the side?

jimbo1111

Yes.