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Joined: May 2003
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spaztikid
dikitzaps
spaztikid May 12, 10:17pm - #177511 
dikitzaps
1974 Toyota Celica

Joined: May 2003
Posts: 5,346
LA
question

if a Turbo is mechanical, how would an electric boost controller work?

edit* -- i'm looking for a technical explaination for this.

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Anonymous May 12, 10:18pm - #177512 
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hmmmm, good question

i dont know... confused
Joined: May 2003
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spaztikid
dikitzaps
spaztikid May 13, 12:24am - #177513 
dikitzaps
1974 Toyota Celica

Joined: May 2003
Posts: 5,346
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2kVeilsideGTS May 13, 12:32am - #177514 

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Jacksonville, FL
i was explained in full detail by a toyota tech on how lift works but i have no idea about Turbo. lift works on oil pressure and same with VVT-I and the variable valve timing. as for the aftermarket valve controllers they fake the oil pressure in most cases so i was told.
Joined: May 2003
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spaztikid
dikitzaps
spaztikid May 13, 12:35am - #177515 
dikitzaps
1974 Toyota Celica

Joined: May 2003
Posts: 5,346
LA
can you read?

i know how lift works and all about variable valve timing...

i want to know how an electric boost controller works.
Joined: May 2003
Posts: 5,346
spaztikid
dikitzaps
spaztikid May 13, 5:33am - #177516 
dikitzaps
1974 Toyota Celica

Joined: May 2003
Posts: 5,346
LA
just in case anyone cares, i found out how it works...

A boost controller goes inline with the hose running to the wastegate actuator. the wastegate opens at a set PSI, allowing exhaust gasses to pass AROUNd the exhaust turbine, so the Turbo doesnt create any more boost than it is at the set point. A boost controller is placed inline with that vacuum hose running to the wastegate actuator, and basically limits the amount of pressure the wastegate actuator sees. They come in two forms, mechanical and electrical, the electric ones use a solenoid and can be controlled from inside the cabin of the car. Units like the Greddy Profec B have remote buttons to mount on places like your steering wheel or shifter, with the push of a button you can set your boost controller from one setting to another. Mechanical are adjustable withj the turn of a knob typically. Usually they are found in the engine bay but some people run them into the interior.
For example, if your wastegate spring opens at 6psi, you can put a boost controller in and have it set to open at anywhere from 6psi till your Turbo quits making boost.
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