BOV on TDI

[Gotturbo]

Me and cody were looking at the TDI and were thinking of putting a BOV on where the tubing goes down to the intercooler... But I just talked to a garage and they said its probably not a good idea cause it might take pressure away from the turbo there for taking away power. Any one else got an idea?

[Sonjay]

if you use small tubing and seal it tight, you probably wont lose any HP.

Maybe some turbo lag...

[burn_your_money]

What's a BOV?

[Gotturbo]

Blow Off Valve the only reason I would want one is to make the turbo hella loud.

[burn_your_money]

OIC. thanks.

[WishingForSpeed]

that would be awesome, hmm, i dont know much about that.

[miamiDaveGLi]

that would be awesome. sorry if its a lame question.
but what exactly is a BOV for ??
lol shoud i put them on my twin turbo maserati ?
8)

[Gotturbo]

Dude your maserati would be soooooo awesome with a BOV... I think NOT POSITIVE but I think with some BOV's you can adjust your boost but im not sure. I do know they make your turbo hella loud.

[miamiDaveGLi]

SICK SICK im loving it cause i know it has adjustable wastegates on the turbos. i will Definatly look into that 8)

[jettadude]

ok what i know is from working on a 12sec talon. but to adjust your boost you need a boost controller, pref a manual 1. a BOV dumps your boost when you lay off the gas like say to break or to shift so it doesn't give you a surge of power and spin the tires or jerk the car or put you into the car infront of you so on and so forth. they can be adjusted for when you want them to dump the pressure but about that i don't know much. hope this helps. and BOV sound really cool but if you want your turbo to spool up louder get a header or improve airflow and exhuast flow, IE: porting, intake, and exhuast work.

[miamiDaveGLi]

ok what i know is from working on a 12sec talon. but to adjust your boost you need a boost controller, pref a manual 1. a BOV dumps your boost when you lay off the gas like say to break or to shift so it doesn't give you a surge of power and spin the tires or jerk the car or put you into the car infront of you so on and so forth. they can be adjusted for when you want them to dump the pressure but about that i don't know much. hope this helps. and BOV sound really cool but if you want your turbo to spool up louder get a header or improve airflow and exhuast flow, IE: porting, intake, and exhuast work.
isnt that what a wastegste on a turbo is ?
do they have turbos with and witout wastegates ?
prolly good for very high horsepower turbo cars.
im not sure.
:twisted: hopefully one day the maserati will be runnin 12s 8)

[jettadude]

wastegates are the same thing ya, they are just silent and not as efficent.

[Mr_Diesel]

wastegates are the same thing ya, they are just silent and not as efficent.


BZZZZZZZZZZT wrong.

They both have equal importantce, they both do different things.

A blow off valve is most commonly used in a gasoline engine to prevent the turbo from spooling down durring gear shifts.

Think about it... You have the peddal to the metal, and the turbo is spinning at maximum velocity, compressing the maxium amount of air, and all the sudden out of nowhere, the throttle plate closes and shuts down the whole system for a brief second... This causes some performance hits due to the fact that the turbo is slowed down slightly. A blow off valve allows the turbo to stay at maximum velocity even when the throttle plate is closed... Air from the turbo is expelled through the blow off valve.

Blow off valves are not a very good idea on diesel's because diesels do NOT have throttle plates.... This is where wastegates come in a bit more handy. Wastegates on a diesel work exponentially. You lay off the accellerator peddal, less fuel is injected, less hot and high velocity gasses are being expelled through the exhaust and therefore through the turbo. This causes less air to be compressed, thus less air to be exhausted, and so forth...

Anyway, so that useless air is not being metered and wasted by the engine, the wastegate comes in a little handy.

Less air is being compressed in the intake, and therefore less PSI. This will cause the wastegate's GATE to open up. This allows some exhaust gasses to bypass the exhaust turbine in the turbo, thus making less boost. It's a VERY ingenious way to manage air and boost in an engine that doesnt have a throttle body.

The reason a BOV would not be wise in a TDI, is because it wouldnt make much noise in the first place, because there is no throttle body to stop the air and cause it to escape in the BOV. Number 2, a TDI's fuel system is a precision instrument that is metering air and adjusting the fuel mixture accordingly... It would definatly cause a performance hit in the TDI, not to mention TONS of unburn fuels would be escaping the engine in the form of black smoke.

Nuff said? gawd you guys owe me.

[burn_your_money]

You deserve a rasie. I am going to click on 3 google ads today.

[miamiDaveGLi]

You deserve a rasie. I am going to click on 3 google ads today.
ROFL LMAO GOOD ONE!!
but thanks for clearing that up i had a general ideae about them.
just wasnt sure.

[jettadude]

ahhh i c, well i was ass backwards. ehh im not a turbo guy. thanks cody. :D