Stupid Question

[Rexx]

Ok I warned ya'll about these and here it comes.

What the hell is the difference between a BOV and a wastegate?

[VB-]

Ok I warned ya'll about these and here it comes.

What the hell is the difference between a BOV and a wastegate?

blow off valve releases the air when you let off the throttle, when the turbo is still spinning and making boost, the pressure builds up between the turbo and the closed throtle body, the blow off valve lets it out

wastegate controls how fast the turbo is spinning and therefore how much boost its making. it does this by diverting exhaust gas around the turbine wheel of the turbo

[Rexx]

blow off valve releases the air when you let off the throttle, when the turbo is still spinning and making boost, the pressure builds up between the turbo and the closed throtle body, the blow off valve lets it out

wastegate controls how fast the turbo is spinning and therefore how much boost its making. it does this by diverting exhaust gas around the turbine wheel of the turbo

Cool easy concept but which is actually better?

Wouldn't it be better to control the turbo so you can use more effecintly?

Do they make quiet BOV.

[mad082]

Cool easy concept but which is actually better?

thats like asking which is better, an acellerator or a gearbox. they do 2 different things.

you can have a turbo without a bov. it just has more lag on gear changes.

you can't have a turbo without a wastegate, otherwise you would be running huge amounts of boost. unless someone comes up with a turbo that works (boost wise) like a supercharger, where it spools up so that at 2000 rpm it only creates 7psi and at 5000 rpm it is still only creating 7psi. but to do that it would have to be able to change size.

[mad082]

as for a quiet bov, if you get a plumback bov and have a sloid airbox, this will cut the noise down. or you could insulate the plumback line (like a muffler on an exhaust).

[blind_elk]

?

Do they make quiet BOV.

The one the factory fitted (after spending many millions of dollars what works best).

[someonestolecc]

howstuffworks.com

[ctjet]

you can't have a turbo without a wastegate, otherwise you would be running huge amounts of boost.

... huge amounts of boost?

im not seeing a problem here buddy :sorcerer:

[scathing]

im not seeing a problem here buddy :sorcerer:

Run without a wastegate for long enough, and you'll find a trail of problems coming from the back of your car.