My new MAF setup + extra pictures
- Thread starter CasopoliS
- Start date
- :
- '13 CWP MS3 & '16 Mazda6 GT
anyone kill a MAF yet? When I get a FMIC should i do this & just runa BOV?
MazdaSpeedSter
Member
- :
- Laser Blue MSP #2733_sold
Great diagram! (thumb)
sickspeed94
Member
- :
- Spicy MSP
it's really nearly pointless to recirc with the above setup. if you still have the recirc valve in place, and don't feel like removing it. recirc. if you remove it it's just one less vacuum hose to check in the case of future vac. leaks.
MazdaSpeedSter
Member
- :
- Laser Blue MSP #2733_sold
What if you had the MAF on the Cold side, like in the diagram, but had a BOV only (no recirculatory) On the hot side...
sickspeed94
Member
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- Spicy MSP
MazdaSpeedSter said:
i wouldn't suggest this sinply because of pressure drop, it would probably surge. having the BOV close to the TB ensures that as the TB closes the air closest to it is being blown off, if the BOV is on the hot side, the air has to almost "bump into itself" and go backwords all the way to the BOV
- :
- '13 CWP MS3 & '16 Mazda6 GT
So if I relocate the maf & Only use a BOV in the correct position will i be fine? How would I recir w/ just a BOV?
I'm trying to get a difinitive answer as well, good question.evilmonkeyMSP said:
There are recirc. adapters for select BOV's:http://www.**********.com/product_p/1421-fit001.htm Due to my ignorance I don't quite get the point of doing this as it seems to just convert a BOV to a BPV.evilmonkeyMSP said:
MazdaSpeedSter said:
That's my "alternative" setup. I'm still switching back and forth btw the BOV-BVP to see if there's a difference. So far, I must say that the BOV gives better throttle response. The only thing is that the engine goes a little rich for a moment but that doesn't seem to affect performance in a perceivable way. I just use Sea Foam every now and then to clean all carbon deposits that this may cause.
Bala de Plata said:
every BOV can become a BPV. Its all about how the valve is built, and the purpose it was designed for.
There is ALWAYS a point to recirculating some air back into the system. I think the most important is the power after shifts, and maintaining some pressure. I need to read up more on it, but from every tuner I have talked to... recirculating is always best. Even those boosting 18psi (in other applications) still recirculate the air. BOV's are added at higer boost levels to relieve pressue to the turbo when the TB closes. For everyday applications recirculating is better. Just what I have heard. Do what you want. My MSP ran best when recirculating, so I recirculated...
CasopoliS, thanks for starting this thread and continuing to provide insight. What do you think of this setup: Injen CAI with filler pipe where the MAF once was / Turbo / Perrin fmic / HKS BOV - cold side / MAF / TB. Where would you recirc. with this setup? Also worth mentioning is that that the turbo will have MPNicks T28 upgrade and extra injectors (might be a tight squeeze before the TB if the MAF is there ... so I may have to run 4 in the intake mani).
i know this thread is touching quite a few topics, but im still a bit unsure about the question i have. the newb question is: on the cold pipe, if one was to relocate the maf to say...8-12 inches from the throttle body, and put a bov (i have sqv) after the maf closer to the IC end of the pipe, they are essentially "tricking" the computer and venting to atmosphere and there is no stalling? yes/no answer would be greatly appreciated.
Ok well many of you have not followed my car's progress on the forum...
#1 - I got a new FMIC and pipes after this setup. I kept the MAF in the stock position with the new pipes. For the like 6 months I had the hiboost kit with the MAF on the cold pipe (what this thread is about) and the MAF did fine. The MAF is still doing fine. Here is the current setup:
BOV on cold pipe, Recirculating on hot pipe in stock location, Custom SRI with MAF in stock location.
#2 - I DONT OWN THIS CAR ANYMORE! So what you see above is in someone else's garage. I still browse and help out on the forums daily, though not too much on these forums anymore.
540james: The point of moving the MAF is to PUT IT AFTER THE BOV. The setup you described would put the BOV after the MAF. The MAF tells the engine what air it is getting. The BOV then gets rid of the air the engine is expecting and the car does not run well (rich). The point of everything here is to put the MAF after the BOV so it is always telling the engine what air it is seeing, even if the BOV lets some air loose, the MAF will know that.
Bala, I would recirc off the hot pipe, where the stock recirc was. If this nipple is not there, just weld a 3/4" pipe off the hot pipe.
That being said, if you have an EMS of any sort, I would just say keep the MAF in the stock location before the BOV. In the picture above, my car ran great with the Unichip EMS.
#1 - I got a new FMIC and pipes after this setup. I kept the MAF in the stock position with the new pipes. For the like 6 months I had the hiboost kit with the MAF on the cold pipe (what this thread is about) and the MAF did fine. The MAF is still doing fine. Here is the current setup:
BOV on cold pipe, Recirculating on hot pipe in stock location, Custom SRI with MAF in stock location.
#2 - I DONT OWN THIS CAR ANYMORE! So what you see above is in someone else's garage. I still browse and help out on the forums daily, though not too much on these forums anymore.
540james: The point of moving the MAF is to PUT IT AFTER THE BOV. The setup you described would put the BOV after the MAF. The MAF tells the engine what air it is getting. The BOV then gets rid of the air the engine is expecting and the car does not run well (rich). The point of everything here is to put the MAF after the BOV so it is always telling the engine what air it is seeing, even if the BOV lets some air loose, the MAF will know that.
Bala, I would recirc off the hot pipe, where the stock recirc was. If this nipple is not there, just weld a 3/4" pipe off the hot pipe.
That being said, if you have an EMS of any sort, I would just say keep the MAF in the stock location before the BOV. In the picture above, my car ran great with the Unichip EMS.
Thanks for answering questions. What's next?
