manual boost controller

[420aNEWB]

first of all yes i will be re circulating bov. my question is how do i hook my boost controller on my external wastegate?


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[eclipse96dsm]

hey hope this answers your question.Good Luck.

Manual and Electronic Boost Controller write up - New England Subaru Forums

 

[dsmgetsyoulaid]

wastegate

 

[dillma13]

can u chose between controlling it through the bov or from the wastgate..?which is better? and how do u do both? ### answer

 

[Bud92gsx]

can u chose between controlling it through the bov or from the wastgate..?which is better? and how do u do both? ### answer

You don't control boost with a bov..You control it with a WG..Either stock, different one such as evo wg, or go external....

WG pressure is the base boost pressure the car should make..

 

[LandSpeed-DSM]

You need to control boost with the wastegate. A reason you would run a line to the compressor by-pass valve, which you are referring to as the BOV is because under boost that line provides additional pressure on top of the diaphragm to help keep it from leaking, in addition to letting it evacuate the charge piping so you don't stall or surge the compressor when the throttle plate slams shut.

That would effectively create a large boost leak, and make your turbo spin faster and work harder to maintain the same boost in the manifold.

 

[Bud92gsx]

You control boost with the wastegate.

Fixed..

 

[LandSpeed-DSM]

So what did you fix, precisely?

Did I intimate otherwise anywhere in there? Or are you just being a ####?

You control boost through bypassing exhaust gas around the turbine wheel.

 

[9!'clipseDOHC]

first of all yes i will be re circulating bov. my question is how do i hook my boost controller on my external wastegate?

Manual Boost Controller (Assuming a ball and spring MBC):

• Run one line from the boost source (compressor cover/j-pipe) to the inlet on the MBC.
• Run a second line from the outlet of the MBC to the wastgate.

Ball and Spring (Hallman, etc.): http://www.dsmtuners.com/forums/articles-turbo-system-intercooler/237982-best-way-install-mbc.html
Bleeder Style (ebay, etc): http://www.dsmtuners.com/forums/newbie-forum/281518-how-install-turbosmart-tee-style-bleeder-style-mbc.html

I have never seen that type of wastegate before but I looked into it a little. It is made by Applied Technologies Research (ATR) and was used mainly on turbo v8's like Buicks. Apparently they aren't around anymore.

can u chose between controlling it through the bov or from the wastgate..?which is better? and how do u do both? ### answer

The BOV's purpose is to release the pressurized air (boost) in the intake tract when the throttle plate is closed (i.e. you shift or let off the gas under boost). It releases the air so that it doesn't bounce back and move through the turbo reversing the direction of the spin (compressor surge).

The purpose of a wastegate is to bypass exhaust gases from spinning the turbo to prevent it from creating more boost. When the wastegate is closed, exhaust gases pass though the turbine housing, spinning the turbo. when the desired boost is reached the wastegate opens and allows the exhaust gas to flow through it, bypassing the turbine wheel.

A boost controller intercepts the signal that tells the wastegate to open and modifies it to increase the amount of boost (manually with a ball and spring or by bleeding off the air, or electronically with a solenoid and/or a stepper motor). A boost controller can only raise boost levels, it can not lower boost levels beyond that of wastegate pressure.

 

[Bud92gsx]

Hey Nate..How many types of boost controllers are there..Not manufacturers but types?

 

[9!'clipseDOHC]

Hey Nate..How many types of boost controllers are there..Not manufacturers but types?

Manual

• Ball and Spring
• Bleeder

Electric

• Solenoid
• Stepper Motor

 

[Bud92gsx]

I will Just google if if you want me to...

But ahh, can you explain how they work..In two sentences or less, to make it short for you..

I know how they work..I just don't know how it works, if that makes sense..But it makes sense in my head..

 

[9!'clipseDOHC]

I will Just google if if you want me to...

But ahh, can you explain how they work..In two sentences or less, to make it short for you..

I know how they work..I just know know how it works, if that makes sense..But it makes sense in my head..

I'm glad it makes sense in your head. In reality though you either know what they do or you don't. Here is what they do:

Manual

• Ball and Spring (The air has to push a ball against the tension of a spring to reach the wastegate. The tighter the spring, the more pressure it takes for the ball to push it open, the higher your boost level.)
• Bleeder (Allows the air going to the wastegate to bleed out (back to the intake) so less air reaches the wastegate. The more air you bleed out, the more it takes to activate the wastegate, the more boost you see.)

Electric

• Solenoid (An electric solenoid works on a duty cycle. A duty cycle of 0% means it is deactive while a duty cycle of 100% means it is always active. Values in between dictate how much of the time it is open resulting in how much boost is built.)
• Stepper Motor (Varies the opening of a precision valve based on the speed and position of the stepper motor. Can be used individually or in conjunction with a solenoid for fine tuning.)

 

[Bud92gsx]

Thank you..

 

[9!'clipseDOHC]

Thank you..

You are welcome!