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TurboSmart BOV

34336 Views 99 Replies 18 Participants Last post by  boostedboiiiii
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Thank you to TURBO329!!!!! Awesome sir, cannot thank you enough for all the sound advice and the help with the install. I honestly have rarely met someone so enthusiastic and positive about the products and the support after the sale, you are truly a credit to this community sir!
Install went fairly smooth, I was honestly very apprehensive about tearing into my new girl. It is weird, I have worked on thousands of bikes, have no problem with everything from the bottom end up, but I was sweating and had a lot of anxiety about tearing into a mchine that has been such a life acheivement for me to own. I took the plunge, and what an absolute joy, the engineers at kawasaki outdid themselves. What a beautiful machine to work on. A place for everything and everything in its place. That being said, getting the stock bov removed and its encumbent plumbing requires a certain amount of patience. The large hose that connects under the plenum to the airbox inlet area is a monster to get at. I figured a great trick to make it easier (this process is not clearly outlined in the service manual), remove the airfilter and its housing, gently work free from the left side of the machine with that large tube already disconnected at the other end and loose, this allows access to the hose clamp attaching it with relative ease. Its oriented in the down position, indicating install was reverse of this. No way to access it otherwise. Once done, very easily buttoned back up. Bypassed the boost solenoid thingy strictly according to Nate's excellent and clear instructions, and snugged her all down. Removed the pair valve and all its garbaggio at the same time. Simply removed and left the pair controller plugged in and tucked up neat so as to avoid the code 64 (air switching valve switch OPEN). This all done, fired her up, took her out. WOW. That blow off sound has immediately become a part of the symphony that is this machines powerplant. JUST AWESOME. Every time you roll off from a moderate amount of boost... PHISHHHHH!!!! Hahahaha. Great stuff! Fun. What bikes are about, FUN! And I do like the fact that the overboost is not being rerouted to the box. Fantastic job on this piece of kit and the fact that it includes the block and clamp for the pornstar hose is excellent! KUDOS SIR!
(That second pic is the H2 crown...

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Don't plug the line. Remove the hose altogether and plug the plenum hole with an M6x10 bolt or one of the bolts that held your carbon box in place.

Check your email. I sent you a couple of pics.

You basically want to take the boost solenoid out of the equation completely. You leave the Boost Solenoid connector plugged in though so your bike doesn't throw code.

Did you also plug the hose coming from the back of the throttle body that was connected to the Air Switching Solenoid?
I took the air switching valve out and the rest of the emissions stuff when I did the flash so I'm good there. I got the e mail thanks very much! I really appreciate all the help. I did hook it up that way but never rode it because it was dumping off Boost as I slowly raised the rpms. I thinking like OZ said it just might be because there is not load on the motor....I'll have to ride it and see I guess. Does yours dump Boost at low rpms?
My apologies Some, I was gonna take a few pics for you, was in the middle of cleaning my garage and went to move my desk maybe 4 feet. Completely F-ed my back up. Been stuck on the couch for going on day 3. Not a great place for me, cranky as an old bear. All I want to do is be out in the garage with my machines. Back injuries blow chunks. Again, apologies, as soon as I am up and around I will get some decent pics of how I routed it all. Turbos instructions are legit, with his help I got her sorted proper. I also added some SmartMoto block off plates. The zx-10 ones they offer fit great, look fantastic and have a real nice finished edge. High quality. The nice option is to get their whole block off kit and it comes with the jump plug for the air switching solenoid. Cool beans.

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No worries Niobium sorry to hear about your back! Been there it does suck for sure. I've been traveling for work so haven't had anytime to play any ways.....I talked to Nate and I'm plumbed correctly. But he's gonna try and slowly rev his set up and just see if his does the same with dumping off some Boost without a load on her. It still freaks me out cuz we're all working to achieve max Boost and I don't want to give any up! Lol
I hear ya, I dont want to give any away either, I do want to test the low throttle openings and see what I hear too. Need to get some riding time in! This sitting around like an invalid doesnt work well for me.
:)
As I understand it the point of the blowoff valve is the motor does not need boost, it can make just as much power without it, when the throttle blades are closed sufficiently to be giving some degree of vacuum after them.

Testing the valve under no engine load, not riding at all, could well have partial vacuum and SHOULD be dumping the unneeded boost.

It doesn't mean the boost would be dumped in operation when the throttles are more open.
I have read this thread a couple of times and there are some good points.
First before any other comment, you guys might try wiring in a relay instead of a resistor. They will draw current and have some back EMF closer to the solenoid. Also you need to check to see if there is a diode across the solenoid. Just measure the resistance(using the diode check on the meter) across the leads and reverse them, if the resistance changes there is a diode and you should put one back in. They reduce back EMF to prevent damage to electronic components.
The relays are cheap and you could hook an LED up to the contacts and actually see what the computer is trying to do.

As far as the smooth throttle response, for sure that would be a good thing. I just can't understand why, other than it bleeding off pressure.
OR COULD IT BE.. that is is maintaining pressure and the stocker is bleeding it off and when you open the throttle under load, it closes suddenly and you get a surge in power???? Food for thought.
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Ok so I finally got out on the H2 with the resent shifting issues resolved and got to check the BOV out. Right now I have it hooked up the way it was stock but this BOV exhaustes to the atmosphere. Took her for a ride and she felt real good.... she dumps off right around 5,500 rpms. I'm going too try it directly off the throttle bodies so she dumps anytime off the throttle next..... any of you guys try to rev yours in neutral o load and see if she dumps off Boost?
I can hear Nobium's blowing off with his throttle blips.But I'm curious...Nobium..your KTRC.Set at 5?Am I reading that right?I'm not familiar with the 2016-17 displays.
Yessir, set at 5 right now, lots of rain and wet leaves all over the roads in my area. Spent two days couch bound from back problems and wanted to ride the H, weather be damned.
I have no problem using the electronics if the conditions dictate. I love the way this bike performs even in crappy weather, I just really do not like getting her dirty. Mostly just use the 14R in the fall/winter months.
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I do love my ZX14! Lol
Ok so I finally got out on the H2 with the resent shifting issues resolved and got to check the BOV out. Right now I have it hooked up the way it was stock but this BOV exhaustes to the atmosphere. Took her for a ride and she felt real good.... she dumps off right around 5,500 rpms. I'm going too try it directly off the throttle bodies so she dumps anytime off the throttle next..... any of you guys try to rev yours in neutral o load and see if she dumps off Boost?
Hey boss, sorry for taking so long to get back to you. My work schedule is really demanding.

Any how, I just got back from a Sunday Morning ride and before I went on a ride I revved it with no load. i didn't place my hand near it but I could hear it. It is bleeding off unneeded boost.

I don't necessarily think it's a bad thing though. The only way I'll be able to test it under load is at John's dyno at partial throttle.... but he hasn't had a slot for me for some time now. He's been pretty busy.

EC, and monster dyno have tested back to back with only a 1hp difference between the two BOV. In all honesty, that could've been the oil coming up to temp causing that 1hp difference so I feel it's negligible. ..and those runs were full throttle 5th gear pulls.

If you had the spare time, you could throw the stock one back on without the recirc hose and feel for any boost bleed with your hand..... but with the way the stock unit is, it'll probably just expel the excess boost sharply instead of bleeding it off.

Note: The bike will run even better when you set it up completely off the throttle bodies. The throttle will be suuuuuuuper smooth!

I have track experience with the BOV set up both ways and straight off the throttle body the herky-jerkiness is about 90% cured.
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Yessir, set at 5 right now, lots of rain and wet leaves all over the roads in my area. Spent two days couch bound from back problems and wanted to ride the H, weather be damned.
I have no problem using the electronics if the conditions dictate. I love the way this bike performs even in crappy weather, I just really do not like getting her dirty. Mostly just use the 14R in the fall/winter months.
Looks like they changed that. -1, 1, 1+; -2, 2, 2+, -3, 3, 3+ was the older configuration.
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Yessir, now its a : 0(off) / 1-9 affair, with 1 being the least intrusive, and 9 being the most restrictive. Very very linear intervention in 4 and 5. I have to actively decide to break the rear loose and then pay close attention to even feel it intrude to reign things in. Very very smooth.
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Hey boss, sorry for taking so long to get back to you. My work schedule is really demanding.

Any how, I just got back from a Sunday Morning ride and before I went on a ride I revved it with no load. i didn't place my hand near it but I could hear it. It is bleeding off unneeded boost.

I don't necessarily think it's a bad thing though. The only way I'll be able to test it under load is at John's dyno at partial throttle.... but he hasn't had a slot for me for some time now. He's been pretty busy.

EC, and monster dyno have tested back to back with only a 1hp difference between the two BOV. In all honesty, that could've been the oil coming up to temp causing that 1hp difference so I feel it's negligible. ..and those runs were full throttle 5th gear pulls.

If you had the spare time, you could throw the stock one back on without the recirc hose and feel for any boost bleed with your hand..... but with the way the stock unit is, it'll probably just expel the excess boost sharply instead of bleeding it off.

Note: The bike will run even better when you set it up completely off the throttle bodies. The throttle will be suuuuuuuper smooth!

I have track experience with the BOV set up both ways and straight off the throttle body the herky-jerkiness is about 90% cured.

So I saw this and got some time to play and re did the hose routing just like you said. **** she's nice! Thanks SO much for trying it out on yours also! She is definitely smoother for sure! I'm much happier the way she rides now for sure..... Thanks very much Nate!
So I saw this and got some time to play and re did the hose routing just like you said. **** she's nice! Thanks SO much for trying it out on yours also! She is definitely smoother for sure! I'm much happier the way she rides now for sure..... Thanks very much Nate!
I TOLD YOU BRO!!!!

Now you can rip through the corners on that thing. It gives you just enough softness to roll on smoothly. It's great!
I TOLD YOU BRO!!!!

Now you can rip through the corners on that thing. It gives you just enough softness to roll on smoothly. It's great!
I still want to know WHY it is smooth. From what you guys are saying is sounds like I will be needing to do this. Most of my riding is in the twisties.Dang.
I still want to know WHY it is smooth. From what you guys are saying is sounds like I will be needing to do this. Most of my riding is in the twisties.Dang.
It is smooth because it is a completely mechanical setup operating off of the vacuum created by the throttle bodies instead of relying on electronics to open the Boost solenoid to expel unnecessary/unused boost.
It is smooth because it is a completely mechanical setup operating off of the vacuum created by the throttle bodies instead of relying on electronics to open the Boost solenoid to expel unnecessary/unused boost.
Okay, so you are saying that the blow off is being held open when you are off throttle on the stocker, and not on the mechanical. Or vice versa?
Its opening lower in the rpm range in the off / on throttle transitions. Much smoother. The stocker vented more aggressively at a slightly higher rpm range. Directly off of the throttle bodies is smoother by virtue of it not relying on the solenoid to determine the blow off openings and closings. The stock setup is really great for passing emmisions tests, but not the best for linearity of response or smoothness in venting lower amounts of boost from lower operating ranges. These are the ranges of maintenance throttle for a corner carver. Makes a fantastic difference and sounds lovely to boot. ;)
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