Possible to replace the BPV with a BOV?
09-23-2013, 05:09 PM
#6
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Join Date: May 2011
Location: Pennsylvania
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My AIDS miata with stock ECU was running atmospheric when i bought it, and it wasnt TOO bad, but the BOV actually sealed. I replaced it with a cheap Bosch recirc. shortly after, because my AFR's were basically 1:1.... :P
BUT ALSO... if OP somehow has a HYDRA (which i PERSONALLY would have mentioned in the first post. lol), i shall divert the comment to a ? instead, for spending 6 times more than necessarry. lol
DOLLA DOLLA BILL Y'ALL!!!!
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09-23-2013, 05:45 PM
#9
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I dont think it has a hydra... Thats why i said what i did in my first post. lol
Just throwing it out there JUSTIN CASE somehow he magically has one. lol
Maybe he was like... "Hmmmm... i have a $3000 turbo kit, maybe i should get a $2000 ECU to complement it?!?!?"
How does the "voodoo box" work anyways??? does it adjust injector pulse width or something?
Just throwing it out there JUSTIN CASE somehow he magically has one. lol
Maybe he was like... "Hmmmm... i have a $3000 turbo kit, maybe i should get a $2000 ECU to complement it?!?!?"
How does the "voodoo box" work anyways??? does it adjust injector pulse width or something?
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09-23-2013, 10:55 PM
#12
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To sum up what everyone else has said in a clearer way...
If you are running a stock EMS, then no, you can't switch to a BOV without negative consequences.
If you are running an EMS that will allow you to tune it, then yes you can. You will have to relocate the MAF to after the BOV, and tune it to make up for the loss of air coming in when you let off the gas.
If you are running a stock EMS, then no, you can't switch to a BOV without negative consequences.
If you are running an EMS that will allow you to tune it, then yes you can. You will have to relocate the MAF to after the BOV, and tune it to make up for the loss of air coming in when you let off the gas.
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09-23-2013, 11:00 PM
#13
To sum up what everyone else has said in a clearer way...
If you are running a stock EMS, then no, you can't switch to a BOV without negative consequences.
If you are running an EMS that will allow you to tune it, then yes you can. You will have to relocate the MAF to after the BOV, and tune it to make up for the loss of air coming in when you let off the gas.
If you are running a stock EMS, then no, you can't switch to a BOV without negative consequences.
If you are running an EMS that will allow you to tune it, then yes you can. You will have to relocate the MAF to after the BOV, and tune it to make up for the loss of air coming in when you let off the gas.
next time, let others "sum up" kthxbai
PS: protip - there's no tuning involved, and there's no maf involved with what everyone's suggesting he do
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09-24-2013, 12:19 AM
#14
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What everyone's suggesting he do is, not replace the BPV with a BOV. But, it IS possible to do. However, if you do it the MAF will be reading the amount of air before the BOV and add fuel accordingly, but the air won't actually make it into the intake, as it will be... blowing off, into the atmosphere. So moving the MAF to after the BOV would have it reading the actual amount of air that'll make it into the intake.
Then, because there will be less air after each shift, the fuel will be adjusted accordingly. Since there will be a different amount of air and fuel coming in, it should be re-tuned to optimize it.
If I'm wrong, I'm all ears... but that's how I've always understood this to work
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09-24-2013, 12:25 AM
#15
Perhaps you can educate me then?
What everyone's suggesting he do is, not replace the BPV with a BOV. But, it IS possible to do. However, if you do it the MAF will be reading the amount of air before the BOV and add fuel accordingly, but the air won't actually make it into the intake, as it will be... blowing off, into the atmosphere. So moving the MAF to after the BOV would have it reading the actual amount of air that'll make it into the intake.
Then, because there will be less air after each shift, the fuel will be adjusted accordingly. Since there will be a different amount of air and fuel coming in, it should be re-tuned to optimize it.
If I'm wrong, I'm all ears... but that's how I've always understood this to work
What everyone's suggesting he do is, not replace the BPV with a BOV. But, it IS possible to do. However, if you do it the MAF will be reading the amount of air before the BOV and add fuel accordingly, but the air won't actually make it into the intake, as it will be... blowing off, into the atmosphere. So moving the MAF to after the BOV would have it reading the actual amount of air that'll make it into the intake.
Then, because there will be less air after each shift, the fuel will be adjusted accordingly. Since there will be a different amount of air and fuel coming in, it should be re-tuned to optimize it.
If I'm wrong, I'm all ears... but that's how I've always understood this to work
Most popular ems' use speed density. This means it calculates fueling based on pressure and temperature, not volume of air like what a MAF does. It gets rid of the MAF altogether, and requires no special tuning at all to accommodate the bov.
So its actually even more simple than what you're suggesting
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09-24-2013, 12:35 AM
#17
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Still not what they're talking about.
Most popular ems' use speed density. This means it calculates fueling based on pressure and temperature, not volume of air like what a MAF does. It gets rid of the MAF altogether, and requires no special tuning at all to accommodate the bov.
So its actually even more simple than what you're suggesting
Most popular ems' use speed density. This means it calculates fueling based on pressure and temperature, not volume of air like what a MAF does. It gets rid of the MAF altogether, and requires no special tuning at all to accommodate the bov.
So its actually even more simple than what you're suggesting
Even with the SD you'd still want to move it to after the BOV though right?
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09-24-2013, 12:38 AM
#18
no. you take it off and throw it in the trash....where it belongs.
which is what "they" were talking about.
now,
if you're on stock ecu and bandAIDZ (aka voodoo box) then yes you are stuck with attempting gay work-arounds like moving it post bov to make it feel less crappy. but its still not going to fix the issue properly
so basically this thread is about OP ditching aids and getting a proper ecu like a man
which is what "they" were talking about.
now,
if you're on stock ecu and bandAIDZ (aka voodoo box) then yes you are stuck with attempting gay work-arounds like moving it post bov to make it feel less crappy. but its still not going to fix the issue properly
so basically this thread is about OP ditching aids and getting a proper ecu like a man
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09-24-2013, 12:38 AM
#19
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Map sensor. As in manifold air pressure. As in senses pressure not flow. As in you run a vac line to the map sensor. As in no you don't have to move it.
Assuming "it" is the MAP sensor. If "it" is the MAF sensor you don't need it, as stated above. If "it" is your *****, still remove it.
Assuming "it" is the MAP sensor. If "it" is the MAF sensor you don't need it, as stated above. If "it" is your *****, still remove it.
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