Boy-Dirt-Car
Member
Ummm, wait... I thought this mod negates the hose from the BPV (BOV?) to the solenoid..... bleh?!?
Bypassing the the bypass valve solenoid.
- Thread starter MPFab
- Start date
Yosemite Sam
I Hates Rabbits!
This mod connects the bypass valve directly to the intake manifold and bypasses the bypass solenoid.
On further reading or even just rereading what MPFab posted... yes you should be able to use that port for a boost/vacuum gauge.
Sounds like the vacuum chamber is where the solenoid is bolted in. You would be bypassing this entirely.
This would make sense, because if the feed was always vacuum, you wouldn't build boost at all.
Sounds like the vacuum chamber is where the solenoid is bolted in. You would be bypassing this entirely.
This would make sense, because if the feed was always vacuum, you wouldn't build boost at all.
Last edited:
Boy-Dirt-Car
Member
That's what I thought... I wanna hook it up in such a way that I can easily return it to stock... for 'Warrantee' purposes.
Thanx Guys!
Thanx Guys!
Hangman
New member
I wanted to chime in and say that I did this a different way than I saw on the first 25 pages!
I capped BOTH sides of the solenoid, and just ran a new 5/32" line from the port on the under side of the IM straight to the BPV.
Took me maybe 15 minutes including getting pissed off at the line glued to the back of the solenoid lol. Woo for free power!!
I capped BOTH sides of the solenoid, and just ran a new 5/32" line from the port on the under side of the IM straight to the BPV.
Took me maybe 15 minutes including getting pissed off at the line glued to the back of the solenoid lol. Woo for free power!!
And I figured it was time for me to join the crowd. I didn't do it the way shown on page one, but I also didn't read the next 24 pages to see if anyone did it my way. I was planning on replacing the line completely, but the line going to the IM refused to budge, and I didn't want to break it trying. Instead, I removed that same line, but at the solenoid side. Then I removed the line coming from the turbo, but also at the solenoid. Next step was to connect the 2 together with a 3/16" barb coupler. Just for good measure, I capped off both open barbs on the solenoid, but I can't see why you would need to. caps are cheap, and I already bought them, so why not. Lastly, I added 1 zip tie to hold the newly connected lines away from any rubbing hazards.
Now onto my reaction to this: Um, WOW. Nothing else needs to be said here.
Now onto my reaction to this: Um, WOW. Nothing else needs to be said here.
2014 Blue RS
Active member
Is it like a flutter or hissing pulse sound? Mine does that
2014 Blue RS
Active member
Is it like a pulsing flutter hissing ? Mine does that
wasteoffilm
Member
If the car drives fine at full throttle, you're ok, I get that randomly.
If the car bucks and hisses at you over 3000 RPM, it usually means the hose came off the intake manifold, or you did something wrong.
hoovie87
Member
I have been trying to understand how this works. Does the vacuum just manually release the boost when you let the gas off instead of the computer? How can this be safe if it is adding boost, but not fuel into the engine? Has someone tested the air/fuel ratio to see if the computer is compensating?
Regards,
David
Sent from my Samsung Galaxy Note II
Regards,
David
Sent from my Samsung Galaxy Note II
NewZJ
I Don't Know
Until now, in every turbo gasoline motor, the bov/bpv is controlled by intake vacuum.
In this Sonic, they put a vacuum reservoir on the intake manifold (the size of your fist) and attached a solenoid that allows it to give the bov/bpv different pressure than the intake. So they control how fast/slow the turbo can build pressure and allow for smoother driving.
The bypass bypass bypass bypass bypass mod changes it back to the way I think it should be and it drives better imho.
tainopayute
New member
Can I jump in here with a question? and please forgive me it this question has been asked already. If I'm planning on replacing my factory BOV with and atmospheric aftermarket BOV, should I still do this mod, I mean, can this mod still help?
hoovie87
Member
It uses the stock bypass valve.
Regards,
David
Sent from my Samsung Galaxy Note II
Dubbs_RS
New member
They're independent of each other. Changing the BOV does not impact how this mod changes the car, so yes you can still reap the benefits of doing this mod. I personally ran this mod while also running the forge BOV.
The caveat? I believe earlier in this thread and in my own personal experience, doing this mod with a BOV results in a fluttering sound when you let off the gas. I ended up undoing this mod while I had the BOV because the fluttering was quite pronounced.
carsNskis
New member
6 vs 1/2 dozen. I pulled the intake hose off of the solenoid side only, then spliced the factory line to the BOV line (no added hose) then capped and zip tied both solenoid fittings.
After a quick test drive I have to say it wasn't as noticeable as I thought it would be.... perhaps I already drive hard enough (traction disabled all the time unless poopy weather) that I'm not seeing much gain? Seat of the pants dyno says "meh"
After a quick test drive I have to say it wasn't as noticeable as I thought it would be.... perhaps I already drive hard enough (traction disabled all the time unless poopy weather) that I'm not seeing much gain? Seat of the pants dyno says "meh"
tainopayute
New member
So you ended up undoing this mod because of the fluttering sound? I'm guessing that you didn't find the "benefits" of this mod worth putting up with the fluttering sounds? With your BOV, did you still get the wooch sound when you shifted or a fluttering sound instead?