Parts needed for BOV

[elopez2185]

Hello Everyone my name is Eric. What parts do I need to install a BOV for my MSP Protege?

 

[Spiced MSP]

what are your current mods? If you still have the stock SMIC, get hardpipes or a new SMIC all together, whatever BOV you want with the corresponding flange and hardware and a vacuum hose to connect the valve to a vacuum source. Be aware that if you run a BOV without relocating your MAF sensor, you will run into stalling issues...or you could do a dual BPV/BOV setup. Just search, there are numerous threads on this topic, the dual setup and relocating the MAF sensor. and welcome to the forum. There is plenty of info on here for the MSP. How long have you had it and what are your goals for performance?

 

[1/4 Mile Imprt]

yep i learned the hardway hooked up a bov to the hot pipe had a cold air installed first by the recommend injen n vented to atmosphere big mstk car would die out stall at 4000 rpm big mess so went back to stock n with cai u get a louder turbo spool but with goble goble lol so yea save ur money n upgrade ur piping if u jst want to hear da turbo i recommend a cold air intake

 

[elopez2185]

The current mods on the car are Vibrant Turbo Back Exhaust, Perrin Intake, and GReddy Purple BOV. The problems that I am having are stalling issues, and when I go over 3000 rpm the car begins to jerk.

 

[elopez2185]

Here are some pictures of the setup in my engine. I forgot to mention there is also a GReddy Electronic boost Controller (GReddy Profec Spec II) as well

 

[Spiced MSP]

Here are some pictures of the setup in my engine. I forgot to mention there is also a GReddy Electronic boost Controller (GReddy Profec Spec II) as well

is the boost controller on stock boost settings? the jerking you feel in the upper RPM range could be a result of the stock tuned ECU. Look at getting a SSAFC, that will definitely help you out and the stalling issues you are experiencing are because of your MAF sensor being on your intake. Either relocate the sensor to your cold pipe or recirculate your blow off valve.

 

[speedracer]

you will need to relocate your MAF to after the BOV to get rid of the stalling.
or run a dual setup

 

[elopez2185]

Where can I relocate my MAF sensor? What do you mean by recirculate a BOV? Sorry guys I'm new to this bare with me

 

[Outlawstar98]

Recirculate the BOV means making it into a BPV, you wont get the same sound as you get with one.


You will need to relocate the MAF after the BOV. Atleast 6" away from the intake mani, and atleast 6" away from the BOV. (this is all on the cold pipe, aka the Intercooler to the Intake mani)

 

[Spiced MSP]

I see you still have the stock SMIC. You have hard pipes as far as I can see.(hot pipe) what about your cold pipe, is it still the plastic pipes or is that upgraded too? If it is upgraded, you can take the MAF sensor from the intake, cut a section out of your cold pipe and put your MAF sensor there with two couplers and some clamps. That will keep you from stalling and your MAF sensor will always see a constant amount of air. Or you could take some type of hose and run it from the outlet on your BOV to a fitting on your intake at least 1" in diameter to keep the turkey away..lol. I don't know anthing about the Perrin intake. If it is anything like the Injen intake. It should have a fitting on it to recirculate. If not, you would have to get a fitting welded onto the intake pipe to recirculate. Basically, the way you have your BOV setup now is VTA(Vent To Atmosphere). When you back off of the throttle quickly and the throttlebody closes, the turbo is still spinning causing pressure to back up in the pipes. With your foot off of the gas, a vacuum is created causing the BOV to open venting all of the backed up pressure. That is when you hear the big WHOOOOSH that everyone likes. Side note: during this time, your car is unhappy and your MAF sensor is freaking out because it doesn't know where all of the air went that it just read causing a temporary rich condition(dumping excess fuel and stalling) When you recirculate a BOV, the same thing happens. But instead of venting it to the atmosphere, you are venting it back into your intake and this way your MAF sensor remains happy and your car drives fine. With mass air flow metered cars like ours, the sensor has to stay within a certain range(voltage) to drive good. When the sensor is above or below that range, you start having issues. Hope this helps and anyone feel free to chip in and correct anything that I said.

edit: here is a thead with pics of that we are talking about. This is a rough idea: http://www.mazdas247.com/forum/showthread.php?t=105437&highlight=maf+sensor

you could do this with or without a BPV. Most relocate the sensor just to run a BOV

 

[elopez2185]

Here are some better pics of the entire setup in the engine compartment. What all will I need to relocate the BOV? (pipes..etc...) I'm probably going to replace the intake and go with an cold air instead of a ram air.

 

[Spiced MSP]

thanks for the clearer pics, before anything you will need hardpipes. The hot pipe is ok. The cold pipe is still the stock plastic pipes. You could probably cut the plastic pipe and replace the cut section with the sensor but I have never seen anyone do a MAF relocation with stock pipes. But anyway, you will need an upgraded cold pipe, cut out a section of the cold pipe and replace it with your sensor using couplings and clamps. Someone mentioned earlier the distance from the TB and the BOV. That should be it, just make sure you clean out your pipes after you finish cutting so you aren't sending metal shavings into the intake manifold, etc.

edit: I just reread your post, are you wanting to move your BOV too? or just your MAF sensor?

 

[elopez2185]

To be honest with you I don't know, I used to get the "whoosh" sound but all of a sudden it just went away. Should I do both? What is the correct way?

 

[Spiced MSP]

To be honest with you I don't know, I used to get the "whoosh" sound but all of a sudden it just went away. Should I do both? What is the correct way?

you don't need to move your BOV, just your MAF sensor. Try adjusting your BOV to see if it opens. It could be a little stiff. Just adjust it a little softer and see what happens. If you don't know, there should be a nut on top of the BOV that you can turn to adjust it to be more soft or stiff.

 

[elopez2185]

I've tried that before and no luck like you said I need to move my MAF sensor.

 

[Spiced MSP]

you tried adjusting your BOV? Did you try adjusting it all the way soft and see if it opens? and then work your way up from there. Your MAF sensor has nothing to do with your BOV opening or not. Once you figure out why your BOV is not opening, I would work on that before moving your MAF sensor. What are you using for a vacuum source for the bov?

 

[1/4 Mile Imprt]

u have severeal options first wld be go bak to stock till u get ur hardpiping(coldpipe) so u can relocate ur maf six inches frm the intake mani write this down so when u do get ur hardpipe frm intake mani (6inches of hard pipe then maf then 6more inches of piping then ur bov then rest of pipe to intrcooler easy right) or other option buy the set up to do bpv but easier said than done jst get u some 2.5 aluminum hard pipes n ull b set to go the money ur gonna use for the cai jst get some pipes heard on a thrd dnt really nead a cai thats what the intercooler is for plus drivin in the rain with a cai sucks trust me i have a injen n only reason i got it got a real good deal on it but once i get my pipin n relocate my maff my cai is goin to b sri hope this helps