difference between L67 and Ecotech

[Wombles]

Yea. Pretty much..
Unsure on power.
Plans are to have it run in on 10psi then upgrade to 19.

 

[Charged3800]

Ecotec and l67 crank is exactly the same ..the diference is the l67 shaft is balanced to the pistons/rods and flywheel..the l67 flywheel has an extra weight on it ..hence the balancing

 

[lilpiket]

i have one question why would a supercharged six need a boost controller... or are there such things as specific boost controllers for a supercharger... only reason this makes me think is because in my experience a boost controller is used on a turbo car to trick the wastegate into reading less pressure, and therefore making the turbo spool more to make it read the pressure its meant to... but the only way to make a supercharger make more boost is to change the pulley... so how does a boost controller come into play on a supercharged motor???

 

[Decicrate]

The L67/M90 set up has 2 types of boost controller (use the term very loosely). The boost bypass actuator sits off the side of the blower and it is controlled by vacuum. When there is a vacuum state the boost bypass valve will be open so there will be no boost generated.
It is done like that as you do not need boost when just cruising along on light throttle. This keeps the blower temps under control as well as saving fuel.
When you put your foot down and there is little to no vacuum being generated, the valve will close allowing the blower to create pressure (boost).
If the valve is only part way closed you will make less pressure as the bypass is allowing air to bypass...

The second controller is the boost solenoid, this is controlled by the ECU.
It is there to bleed of boost if the ECU sees certain states, high temps, reverse gear and so on.
Most people delete the boost solenoid to stop that happening.

 

[lilpiket]

The L67/M90 set up has 2 types of boost controller (use the term very loosely). The boost bypass actuator sits off the side of the blower and it is controlled by vacuum. When there is a vacuum state the boost bypass valve will be open so there will be no boost generated.
It is done like that as you do not need boost when just cruising along on light throttle. This keeps the blower temps under control as well as saving fuel.
When you put your foot down and there is little to no vacuum being generated, the valve will close allowing the blower to create pressure (boost).
If the valve is only part way closed you will make less pressure as the bypass is allowing air to bypass...

The second controller is the boost solenoid, this is controlled by the ECU.
It is there to bleed of boost if the ECU sees certain states, high temps, reverse gear and so on.
Most people delete the boost solenoid to stop that happening.

so the first one you mentioned is more or less a supercharger wastegate and the second one is just a safety

 

[Decicrate]

The first one is a bypass valve and the second controls the bypass valve via the ECU.

 

[Immortality]

You could use the boost solenoid to control the total amount of boost via the tune.

It's not possible in the standard tune but if someone was smart enough to alter the factory tune, you could in theory switch between low and high boost with a simple dash switch by running a smaller pulley to achieve a higher boost and then use the boost valve via the boost solenoid to reduce total boost when in low boost mode.

 

[Deuce]

You could use the boost solenoid to control the total amount of boost via the tune.

It's not possible in the standard tune but if someone was smart enough to alter the factory tune, you could in theory switch between low and high boost with a simple dash switch by running a smaller pulley to achieve a higher boost and then use the boost valve via the boost solenoid to reduce total boost when in low boost mode.

I believe you meet the 2 criteria; therefore, when will you be doing said Hi/Low boost mod aye oke:

 

[lilpiket]

I believe you meet the 2 criteria; therefore, when will you be doing said Hi/Low boost mod aye oke:

i too would like to see someone complete that would make a real good add on to a sleeper

 

[Decicrate]

i too would like to see someone complete that would make a real good add on to a sleeper

They have, its called a right foot.

When you don't want much boost, you don't push the right foot down on the accelerator as far as you would if you wanted full boost....................