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2021 ST BOV
- Thread starter Selldawg22
- Start date
but wouldn’t that air that continues into the engine be bad considering it’s mostly air? Unless the ecu programs the injectors to run a certain amount of fuel so that it’s not lean? And would a fen fab charge pipe w bov be bad like needing a tune since it’s throwing different amounts of air pressure than it normally would?
Well, you're right, it's mostly air- in fact it's completely air. But if the injectors don't inject fuel, then the mixture isn't lean. For the second question, the charge pipe doesn't have anything to do with pressure per se. You're also dealing with a speed-density system, not a MAF based system, so many of the problems with that system aren't valid.
The control of the ECU on this engine is way beyond something you may have read about in the past or God forbid on some other forum! For example, it has vacuum operated wastegates- not based on pressure. Which means it can open the wastegates any time it wants. During cruise for better MPG, to eliminate knock (rather than the old way of only being able to retard timing), or in this case, (keep in mind the other things in my post that are happening), to open them at certain times when the "throttle" (also ecu controlled) is "closed". This keeps pressure build-up lower than it would normally be, lessens strain on the turbos, and actually makes the car faster, more efficient, and more robust.
If you're still confused, here is another post:
https://www.explorerst.org/threads/2021-st-bov.2576/post-41797
Follow the link in that post to the Ford patent- that should answer all questions and forever put to bed the idea that a BOV in the modern era is anything other than a throwback. Might just as well buy yourself a set of klaxon horns, fuzzy dice, and some lake pipes.
The control of the ECU on this engine is way beyond something you may have read about in the past or God forbid on some other forum! For example, it has vacuum operated wastegates- not based on pressure. Which means it can open the wastegates any time it wants. During cruise for better MPG, to eliminate knock (rather than the old way of only being able to retard timing), or in this case, (keep in mind the other things in my post that are happening), to open them at certain times when the "throttle" (also ecu controlled) is "closed". This keeps pressure build-up lower than it would normally be, lessens strain on the turbos, and actually makes the car faster, more efficient, and more robust.
If you're still confused, here is another post:
https://www.explorerst.org/threads/2021-st-bov.2576/post-41797
Follow the link in that post to the Ford patent- that should answer all questions and forever put to bed the idea that a BOV in the modern era is anything other than a throwback. Might just as well buy yourself a set of klaxon horns, fuzzy dice, and some lake pipes.
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I have a MY 2020, the Turbosmart 50/50 bov plug that is attached to it seems to go both ways when plugging it into the factory connector. I'm curious if anyone had this issue or if I have an incorrect plug or part.... I didn't purchase this part as it was given to me through a friend.. this was on his ranger which seems to be the same part number but wanted to confirm.
Wow! That was a read and a half... I was close to pulling the trigger on one of these 50/50 BOVs to gain some pshhh pshhh. Looks like my 23 doesn't have one nor will it benefit power or mileage. To have to go fen fab and all that just to add pshh pshhh seems like wasted money... thx all for the priceless info here!!!
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I
Im extremely late on this entire forum… Beings that i just purchased the 22 Explorer ST. I agree with some of some of the points you’ve made. A BOV IS indeed completely pointless on the new age STs. Except for sound. But “stealing a bit a turbine speed”??? The vehicle has SOME sort of (let’s call) “relieve” valve. It HAS to. Whatever Ford did to remove a BOV, The extra, unused “boost” goes. SOMEWHERE. Now in my experience, (i’ve only ever messed with boosted LS motors) BOVs are safety for your turbo. You don’t want built up pressure to be pushed back into the compressor.. Am i wrong? I’m not a know it all, by any means. But as i stated previously, The extra boost goes somewhere, and it’s not to atmosphere. Cutting Injectors with an open TB, and allowing boost into the intake manifold? (This is what i have just READ on how it works). THAT sounds like serious lag issues. Dead injectors and extra air in the intake sounds like horrific air/fuel mixtures on re-acceleration. Now with that being said, It could possible vent through an open “exhaust” valve, but come on… With the amount of programming that took to do something like that i would expect more of a “power gain” per say than just a “hey we got rid of the whoosh”. I would love to see dyno sheets side by side on stock BOV STs vs. the New no BOV STs. Both Vehicles bone stock pump fuel. Just to see if there is ANY sort of difference. Cause it dang sure ain’t in fuel mileage lol. Also may i add. Why not have a BOV that recirculates boost back into the turbine to help it stay at speed..? You know kinda like a nitrous turbo set up. Now i may be COMPLETELY wrong on how any of this works. But i’m extremely curious on how it does work, Why does it work, why did they do it, and how can i make the most power out of it.
Im extremely late on this entire forum… Beings that i just purchased the 22 Explorer ST. I agree with some of some of the points you’ve made. A BOV IS indeed completely pointless on the new age STs. Except for sound. But “stealing a bit a turbine speed”??? The vehicle has SOME sort of (let’s call) “relieve” valve. It HAS to. Whatever Ford did to remove a BOV, The extra, unused “boost” goes. SOMEWHERE. Now in my experience, (i’ve only ever messed with boosted LS motors) BOVs are safety for your turbo. You don’t want built up pressure to be pushed back into the compressor.. Am i wrong? I’m not a know it all, by any means. But as i stated previously, The extra boost goes somewhere, and it’s not to atmosphere. Cutting Injectors with an open TB, and allowing boost into the intake manifold? (This is what i have just READ on how it works). THAT sounds like serious lag issues. Dead injectors and extra air in the intake sounds like horrific air/fuel mixtures on re-acceleration. Now with that being said, It could possible vent through an open “exhaust” valve, but come on… With the amount of programming that took to do something like that i would expect more of a “power gain” per say than just a “hey we got rid of the whoosh”. I would love to see dyno sheets side by side on stock BOV STs vs. the New no BOV STs. Both Vehicles bone stock pump fuel. Just to see if there is ANY sort of difference. Cause it dang sure ain’t in fuel mileage lol. Also may i add. Why not have a BOV that recirculates boost back into the turbine to help it stay at speed..? You know kinda like a nitrous turbo set up. Now i may be COMPLETELY wrong on how any of this works. But i’m extremely curious on how it does work, Why does it work, why did they do it, and how can i make the most power out of it.
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Considering 2025 ST but concerned with reliability
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