Make your turbo spool faster for free! | Three ways explained | no blow off, closed loop & Porting
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- เผยแพร่เมื่อ 5 ก.พ. 2025
- #turboboost #turbo #guide #tuning
In this video i will be showing you, how to improve spool and response for your turbocharged Car with a bigger-than-stock turbocharger by deleting your BOV, porting your turbo exhaust housing and/or using closed loop boost control.
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For those doubting that running no blow off valve will not have better response: th-cam.com/video/zlxGTdUw0y4/w-d-xo.html in this video i am testing back to back with data logging and you can see that it works. this is under the same conditions, same tune just different blow off configuration. (with the stiff 26 psi springs it does not open).This of course is only the case with a big turbo that does have not have good transient response on a small engine, so like a gt28 and up on a 1.6.
Free is my favorite price
Thats amazing, mine too 🤣
Wouldn't it be better to use a diverter valve? I don't think spending 50€ on a probably modified car is a problem although i understand the idea of a "free" mod video
i dont think you did understand what i mean really, without a blow off or diverter valve, you are going to have a lot more transient response.
it being a blow of or recirculating will not make a difference.
@@throttlebuddies0 I can't explain it so good, but i heard that a BOV vents the air too the atmosphere resulting in 0 Bar Pressure in the Intake. a DV however would build an underpressure in the intake of let's say -0,3 Bar which results in greater Spool time between shifts. I'm not 100% sure if it is actually quicker than not running an at all but i would assume that all the boost pressure makes the spool slower since the Turbo is slowed down by the excessive Boost pressure which results in the funny noise. Like i said im an beginner so i'm not really sure what really is better for the spool time.
@@heniodriftrally3761 a diverter valve puts everything back into the engine but the pressure within the intercooler piping is going to drop to zero having the same effect as using a blow off valve.
@@throttlebuddies0 Interesting, what is actually faster spooling BOV or Diverter Valve?
@@heniodriftrally3761 there wouldnt be a massive difference. it comes down to the design. if you use a bov with a heavy spring that would be massively batter.
a diverter valve is the same thing it just recirculates the air into the intake pipe but that does not do anything positive for the turbo. its just used in countried where emissions dont allow for open bovs, on cars with maf sensors and on most stock cars.
in theory a diverter valve will have a negative effect even because it releases the heated up air after the turbocharger into the intake pipe and thus the turbo needing to breathe hotter air than it has to
what a load of crap. Letting the air escape during shift either with a BOV or a diverter valve helps maintaining the turbo rpm. Not having a valve will drastically slow down your turbo speed because it will fight against the pressure inside the intake pipe and there's a pause of exhaust gas during the shift. The volume of the piping you have to fill up after a shift is negligible compared to what any turbo is moving at mid rpm and upper
how come that testing shows otherwise then? i have tested it myself from with a bov to without one and without it was a lot better and the car was on boost again a lot quicker after a shift
also its not only the volume of piping having to be filled up but the turbo that needs to get back up to speed too
"Does a rear mounted turbo have a lot of lag"
th-cam.com/video/f4sV-OU_zuM/w-d-xo.htmlsi=NoGcgBAVCyhJzMr6
@@SystemScandll depends, it will if not sized correctly but if the size is right for the engine there will be a small difference because of less heat in the exhaust housing due to the exhaust gas loosing energy by traveling to the back of the car and you will loose a bit of transient respinse inbetween shifts