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View Full Version : HKS BPV reallocation in a MSP?



isbre
02-09-2009, 06:10 PM
My MSP has some performance problems since my rebuild (more infor here http://www.mazdas247.com/forum/showthread.php?t=123696247)

That is starting to become a long time ago, but I need a car in my MSP does run CEL-less, but now it's time to fix it and get it better than ever finally. I am pretty sure my problems is caused by an air leak somewhere before the intake manifold, so I want to start by changing out the intercooler and plastic pipes and get some nice stainless steel ones instead. Probem is that the only one I have found is with a BOV, and after feeling how the car is with an air leak I don't think venting to air will be a good idea.

My questions:
Does the BPV have to be as close to the turbo as possible to work correctly?
Does the hose going from the BPV has to be almost completely straight?
Will it be a good idea to just plug the BPV hole on the hotpipe and get a recirc fitting on the HKS mounted on the coldpipe and run a hose from that to te intake? Anyone tried this?

MSpeedFreak03
02-09-2009, 06:16 PM
well mount the HKS BOV with recirculation fitting on it and yes to my understanding just run a hose from the HKS fitting to the intake!

isbre
02-09-2009, 06:37 PM
well mount the HKS BOV with recirculation fitting on it and yes to my understanding just run a hose from the HKS fitting to the intake!

That is the basic setup I am planning, still the two most important question remains. Will the added distance between the turbo and BPV and the almost 180 degree turn on the hose to the intake cause more problems than I gain by replacing the stock BPV with the better quality HKS?

isbre
02-14-2009, 12:28 PM
Don't want to try this if the added distance is harmful to the turbo.
Nobody has tried this? (or know if the BPV position matters?)

JCell
02-14-2009, 04:34 PM
a bpv is basically a scaled down version of a bov

shouldnt make a difference

isbre
02-15-2009, 01:34 PM
I appreciate the response,I really do. Unfortunatly it doesn't change the fact that you are telling me things I already know. What I don't know if the reallocation of the bpv is a problem. The stock BPV placement is not far away from the turbo and the pipe to the intake is pretty straight. In this setup the BPV is placed on the colpipe meaning that the air must pass though the hotpipe, intercooler and half of the coldpipe before the being routed through a bent hose on it's way to the intake. Is this a problem or is the colder air to the intake just a plus?

JCell
02-15-2009, 01:39 PM
i had my bpv routed the same way, cold pipe back to intake. its the way perrin designed the fmic

no problems whatsoever

isbre
02-15-2009, 06:56 PM
That was the info I was looking for, thanks!!

Time to add that recirculation fitting to my WTB list