That is a boost reference, so it reads positive pressure while boosting. At idle it may read vacuum, but it depends on the size of the turbo. To answer your question more clearly, that nipple should be tapped into if you want something that requires positive pressure ("blowing") like a waste gate.
@@TheMileHighMechanic then in electronic selonoid top port is connected to turbo nipple with a 《T》. if positive presseure goes into top port it causes decrease boost and opening wastegate valve sooner. isn't that right? im a little confused
@@AlexExecutive Look at 2:20 the top port is only for a boost controller. It adds positive pressure to the top to make it harder to open the valve. This means that the bottom port (boost reference) must overcome the pressure of the spring and the dome pressure instead of just the spring. This increases boost. Hope that makes sense.
If you're running a twin turbo setup is the wastegates ran the same? Each wastegate gets routed to each turbo? I had seen some pictures that look like they were connected to each other with a T so just kinda confused.
The line routing is the same in a twin turbo set up... everything is just doubled. In a traditional set up you have 2 waste gates, and a T in the vacuum lines leading to the manifold is a possible way to route both manifold references off of one port.
if we have a electronic boost controller and double port wastegate ,then we set it up my question is buttom port is gonna suck the air and the top port gonna blow the wastegate diaphragm to increase boost?
Yes, adding positive pressure to the top of the waste gate is called "dome pressure" and is a way to increase the release pressure of the waste gate. This will boost the turbo more.
Very informative! I've been a car guy my whole life but never really played with boost. Building a turbo kit for my truck and putting a Paxton on the Mustang. This is helpful in both cases
Currently have a 2019 q50s red sport 3.0L Twin turbo. I would like to install HKS BOV…mostly just for the sound. The car stock comes with a waste gate. Would me installing a BOV with out a tune be safe ?
Running both a MAF and a MAP in most cases is redundant. In my case the way I'm tuning is purely off of manifold absolute pressure, so there is no need for a MAF. Everything can be tuned from the volumetric efficiency table using load as manifold pressure. Hope this helps!
@@TheMileHighMechanic how would I tune it if I put the MAF after the turbo because if I run 8 lb of boost how would the system know how much fuel to give it I did put bigger injectors in. I'm putting CXRacing GT35 T3 Turbo on a 1998 Mercury mountaineer all wheel drive It has a Ford 5.0 and I put 42 lb injectors in and I'm about done with the exhaust side I'm just wanting to make sure I put the sensors in the right spot so I don't have any issues later on.
Personally I don't have any experience with MAF tuning, so I don't think I can give you a definitive answer there, but you would probably have to run an upgraded MAF that is rated for around 2 bar depending on how much you are pushing. I'm sure the tuning theory is the same between MAF and MAP though, you will just have to tweak your efficiency table based on mass flow rate instead of absolute pressure.
I ran mine straight to the turbo. A lot of turbos have a nipple on them that you can use, but if you don't have one I recommend tapping into the charge pipe around the turbo.
@@TheMileHighMechanic thank you Soo much, that's the thing that everyone else left out when explaining how a wastegate works and go figure it's something this simple
I've seen them used on daily drivers but it is a lot simpler to skip out on the whole system. Mostly I see them on drag cars so they can switch up the tune on the fly by being able to change the boost number on the computer.
* there are many ways to have wastegate boost control 1-electronic 2-co2 3-bleed off And probably more *the blow off spring is a measure of boost control, the spring will bleed off boost if you go over the rated spring rate in the blow off valve
The spring in the blow off valve is there for nothing more than to keep the valve closed at idle. The blow off valve is operated completely on pressure differences between manifold and intake. This is a common misconception. The waste gate spring, however, works exactly the way you described...it bleeds off pressure when the pressure in the bottom chamber reaches the rating of the spring.
Boy I thought this was Chris fixit for a second. When it started lol
Thank you for your useful video. My question is, the hose that we pull from the turbo nipple sucks the air or blows the air out ?
That is a boost reference, so it reads positive pressure while boosting. At idle it may read vacuum, but it depends on the size of the turbo. To answer your question more clearly, that nipple should be tapped into if you want something that requires positive pressure ("blowing") like a waste gate.
@@TheMileHighMechanic thank you bro❤️
@@AlexExecutive absolutely 🫡
@@TheMileHighMechanic then in electronic selonoid top port is connected to turbo nipple with a 《T》. if positive presseure goes into top port it causes decrease boost and opening wastegate valve sooner. isn't that right? im a little confused
@@AlexExecutive Look at 2:20 the top port is only for a boost controller. It adds positive pressure to the top to make it harder to open the valve. This means that the bottom port (boost reference) must overcome the pressure of the spring and the dome pressure instead of just the spring. This increases boost. Hope that makes sense.
What is the "charge pipe" ? Thanks
It is the pipe that transports the charged air from the turbo to the intake manifold.
@@TheMileHighMechanic OK thanks for explaining that.
@@jackspratt4343 absolutely!
Best video iv seen explaining the diffrence. Thank you sir.
Absolutely!!
If you're running a twin turbo setup is the wastegates ran the same? Each wastegate gets routed to each turbo? I had seen some pictures that look like they were connected to each other with a T so just kinda confused.
The line routing is the same in a twin turbo set up... everything is just doubled. In a traditional set up you have 2 waste gates, and a T in the vacuum lines leading to the manifold is a possible way to route both manifold references off of one port.
if we have a electronic boost controller and double port wastegate ,then we set it up
my question is buttom port is gonna suck the air and the top port gonna blow the wastegate diaphragm to increase boost?
Yes, adding positive pressure to the top of the waste gate is called "dome pressure" and is a way to increase the release pressure of the waste gate. This will boost the turbo more.
@@TheMileHighMechanic cool then the bottom port works with negative pressure?
@@amirnr5063No, bottom is for boost reference...(2:20)
Best video i found, thank you.
Absolutely, glad you found it helpful!
@@TheMileHighMechanicI as well found this very useful, thank you!
Very helpful thanks for posting this video
Glad I could help!
Very informative! I've been a car guy my whole life but never really played with boost. Building a turbo kit for my truck and putting a Paxton on the Mustang. This is helpful in both cases
Hell yeah, glad I could help!
Currently have a 2019 q50s red sport 3.0L Twin turbo. I would like to install HKS BOV…mostly just for the sound. The car stock comes with a waste gate. Would me installing a BOV with out a tune be safe ?
Every turbo car has a wastegate and BOV...if all you are doing is removing the BOV and replacing it with another one, it will be fine.
Do I need a wastegate or is a blow off valve enough
Without a wastegate, you will over-boost your engine. So in short you absolutely need a wategate.
How do you set up your mass air flow sensor
Running both a MAF and a MAP in most cases is redundant. In my case the way I'm tuning is purely off of manifold absolute pressure, so there is no need for a MAF. Everything can be tuned from the volumetric efficiency table using load as manifold pressure. Hope this helps!
@@TheMileHighMechanic how would I tune it if I put the MAF after the turbo because if I run 8 lb of boost how would the system know how much fuel to give it I did put bigger injectors in. I'm putting CXRacing GT35 T3 Turbo on a 1998 Mercury mountaineer all wheel drive It has a Ford 5.0 and I put 42 lb injectors in and I'm about done with the exhaust side I'm just wanting to make sure I put the sensors in the right spot so I don't have any issues later on.
Personally I don't have any experience with MAF tuning, so I don't think I can give you a definitive answer there, but you would probably have to run an upgraded MAF that is rated for around 2 bar depending on how much you are pushing. I'm sure the tuning theory is the same between MAF and MAP though, you will just have to tweak your efficiency table based on mass flow rate instead of absolute pressure.
fair play nice and simple 😎
👌👌 absolutely
K-series turbo FTW!!!
Yessir!!
This is the best explanation I’ve found on RUclips
I appreciate it. Glad you found it helpful!
Literally
What is your boost reference for the wastegate plumbing and what do you hook it up to in general? Great and easy to follow video btw.
I ran mine straight to the turbo. A lot of turbos have a nipple on them that you can use, but if you don't have one I recommend tapping into the charge pipe around the turbo.
@@TheMileHighMechanic thank you Soo much, that's the thing that everyone else left out when explaining how a wastegate works and go figure it's something this simple
@@rzx_quantum3089 Yep, these things seem daunting at first, but once you break it down they all become simple.
Is the co2 canister something you'd use on a daily?
I've seen them used on daily drivers but it is a lot simpler to skip out on the whole system. Mostly I see them on drag cars so they can switch up the tune on the fly by being able to change the boost number on the computer.
Keep up de vids its been over a month on the turbo toaster
New vid Wednesday! I've been really busy with school stuff but I'm getting back into it
Great explanation. Helped alot
Glad I could help!
Nice, thank you.
Absolutely!
* there are many ways to have wastegate boost control
1-electronic
2-co2
3-bleed off
And probably more
*the blow off spring is a measure of boost control, the spring will bleed off boost if you go over the rated spring rate in the blow off valve
The spring in the blow off valve is there for nothing more than to keep the valve closed at idle. The blow off valve is operated completely on pressure differences between manifold and intake. This is a common misconception.
The waste gate spring, however, works exactly the way you described...it bleeds off pressure when the pressure in the bottom chamber reaches the rating of the spring.
Thank you, got the answers I was looking for. Bonus it was on a k series so translates perfect to my situation.
Glad I could answer your questions!!