Installed Underground Tuning blow off valve

[Jeffhallphotos]

I feel like a kid all over again, I know it does nothing for Performance but this thing is amazing

 

[Chieffreeze]

Sorry I'm not tech savy and need some context. Is it supposed to sound like air brakes or a whip cracking. It seems like your engine is spooling up and then crapping out. Sorry again, I just don't get it.

 

[Jeffhallphotos]

Sorry I'm not tech savy and need some context. Is it supposed to sound like air brakes or a whip cracking. It seems like your engine is spooling up and then crapping out. Sorry again, I just don't get it.

It’s basically a turbo waste gate. All of the build up air pressure gets released from the bottom turbo

 

[Chieffreeze]

Thanks for the info. It makes sense but my question is if the turbo is getting to much air pressure isn't that indicative of other issues that should be addressed?

 

[Deange2001]

Thanks for the info. It makes sense but my question is if the turbo is getting to much air pressure isn't that indicative of other issues that should be addressed?

It is normal.

 

[RDRHINO]

Wow it's actually pretty loud!

 

[HurriRAM]

Thanks for the info. It makes sense but my question is if the turbo is getting to much air pressure isn't that indicative of other issues that should be addressed?

The stock blowoff valve is a recirculating bov. Can be either recirculating (releasing pressure back into the intake) or atmospheric venting (releasing pressure directly into the atmosphere). The one from underground is atmospheric. I guess atmospheric is illegal in California.

 

[Mods_]

Thanks for the info. It makes sense but my question is if the turbo is getting to much air pressure isn't that indicative of other issues that should be addressed?

It’s not that the turbo is getting any more pressure than normal. Problems occur when the motor suddenly requires less air (I.E. closed throttle) but the turbo/intake are still pressurized with all of the excess air that the motor was about to use. Blowoff Valves move this excess air out of the turbo plumbing, so that the system is no longer pressurized, so that seals/pipes/etc don’t burst.

The only difference between stock and the truck in the video is that the truck in the video now releases all of this excess air into the atmosphere, rather than rerouting it back into the exhaust system somehow, thus the sound.

 

[Chieffreeze]

Thanks to everyone for making me smarter with your feedback.

 

[D&Sadventure]

There is a purpose to blow off valves. Turbos have two wheels in them. The inducer and the compressor. Both of the wheels are very similar. The inducer is driven by exhaust pressure and is hooked to a shaft that passes through the housing to the compressor side and spins the compressor wheel. When you suddenly let off the throttle and there is no more pressure on the exhaust side yet you still have pressure on the intake side. It needs somewhere to go. Without the blowoff valve, it tries to go backwards through the compressor side and slows down the turban speed. This results in turbo lag as it tries to spin back up to speed when you get back on the throttle.

 

[Scottie2Hottie]

Any hiccups? I’m a little old school when it comes to recirc vs atmospheric. If the air is being metered in the intake, releasing that air to atmosphere can cause slight bogs or hesitation as the ECU tries to compensate for the missing air. My turbo vehicles of the past (and present) had to be tuned where it was recirc or atmospheric. Wondering how our ECU responds to this mod.

 

[Dark Knight G45]

I absolutely love BOV’s and miss the sound of them.
Please let us know if you’ve had any issues, CEL’s, etc.

Also how was the install? What needed to be done? Does it look obvious to a dealership? Is it easily reversible?

Would love to see these mated to an intake for all the turbo sounds.

 

[RamFan]

Interesting read here on someone’s POV on this product

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[RamFan]

For those who can’t see the link

 

[Irongoats]

(U)Apon reading that I won't get one

 

[Scottie2Hottie]

This is exactly why I posted. His experience with the truck falling on its face is either a result of a boost leak (could be since his gasket melted) OR it’s because metered air that the ECU is accounting for is released to atmosphere instead of staying within the intake system.

 

[Jeffhallphotos]

Well, I obviously bought this impulsively and I love it and I’ve had no problems and the install was really easy. But now I’m gonna have to uninstall it to really see if there is lots of power and things like that.

I absolutely love the sound of it, but if there is negative from this being in there, then I’m gonna take it off

 

[Mikey Swift]

Well, I obviously bought this impulsively and I love it and I’ve had no problems and the install was really easy. But now I’m gonna have to uninstall it to really see if there is lots of power and things like that.

I absolutely love the sound of it, but if there is negative from this being in there, then I’m gonna take it off

Did you do all the Cat6 runs with or without BOV installed?

 

[Jeffhallphotos]

Did you do all the Cat6 runs with or without BOV installed?

I was dumb, I only did it with the K&N, not my original videos that I posted earlier. I just installed it yesterday, but I didn’t think anything of it because I was told there are no Perfomance enhancements or decrease of power.