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Red bullet VVTI seloniod

Discussion in 'Prius c Accessories and Modifications' started by Max Taiwan, Apr 9, 2019.

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  1. CSuirp

    CSuirp Active Member

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    Awesome Max! I'll be checking my solenoid for that part #. Hopefully it's the one you mentioned above. If so, I'm interested in just getting one for the price of $49 usd. I'll let u know what I find.
     
    #41 CSuirp, Apr 17, 2019
  2. Max Taiwan

    Max Taiwan Active Member

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    A quick update on compatibility. I've taken a photo of my old OEM solenoid. If your old one matches this part number, then you are able to plug-and-play the new solenoid 20190418_205837.jpg you may find your 1555592532115199982515.jpg solenoid located on the top of your engine. Please see the photo here.
    as you can see here the stamp number doesn't 100% correlate with the Warehouse part number. So this will be a better reference for people who have a camera that you can visualize the stamped number on the solenoid itself.
     
    #42 Max Taiwan, Apr 18, 2019
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  3. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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    And again, we see just 2 wires into the solenoid, so it CAN'T change the timing, or duration of the camshaft. It might have some marginal effect on the promptness of changes, but no real control to alter cam timing or duration.

    Mostly, it is red.
     
    #43 JimboPalmer, Apr 18, 2019
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  4. Max Taiwan

    Max Taiwan Active Member

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    Sorry for the wait guys I was able to get a dyno for a Toyota Altis aka Corolla. SmartSelectImage_2019-04-19-00-33-38.png solid line is after seloniod. Dotted line is the oem.
    I'm going to try and run my own car on the dyno this weekend.
     
    #44 Max Taiwan, Apr 18, 2019
  5. Max Taiwan

    Max Taiwan Active Member

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    Hi Jimbo,

    Thank you for the reminder, I think we are under estimating the relative speed of the valve.
    Since the VVTI is monitored in so much steps I think by improving the reaction speed by a little will yield a very big difference. I think the diagram steps before was a simplified version, in reality that valve is moving in hertz.
    I've dealt with servo technology in the past, I went from analog era all the way to digital and then high voltage digital, I can say the reaction speed of 0.03 sec difference is between auto rotation of a helicopter or pure hardcore 3D with the tail locked solid and any improved in pull is always welcomed.

    I felt more performance/efficiency. I did the video comparison, mpg review, and now i got the dyno all showing improvement soon I will try to put my car on the dyno. I get 800km to a tank of gas mixed driving in and out of town.

    I am waiting on the forum to be able to bring this to you in a box ready to go in 5 min. I hope you will be able to enjoy it soon.
     
    #45 Max Taiwan, Apr 18, 2019
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  6. CSuirp

    CSuirp Active Member

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    Hi Jimbo. Sorry for the ignorance here but what did u mean by "it is red". I'm reading your comments as a positive thing your finding. Correct me if I'm mistaken. Forgive me for not understanding.
     
    #46 CSuirp, Apr 18, 2019
  7. CSuirp

    CSuirp Active Member

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    Hi Max! TY for that info. Just so we're all clear, are you saying we should take out our existing solenoid and use the part number stamped on the inside to match your part # 321040 538023 NP204 in the 1st pic above or just use the outside part number in the 2nd photo?
     
    #47 CSuirp, Apr 18, 2019
  8. Max Taiwan

    Max Taiwan Active Member

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    Outside number will be fine if it matches up.

    I have great news for all you guys and girls. Since it was my birthday on April the 17th the manufacture agreed to give me one for free.
    I'm not in the practice of receiving things for free so I'm going to give it away here!

    You will just have to write why you want one and I'll select one lucky winner on Monday.

    Please write your vehicle year and millage and post a photo of your stock seloniod serial number with it out of the engine. I appreciate if you will chip in for the shipping cost.
    I look forward to your replies! Feel free to share the info.
     
    #48 Max Taiwan, Apr 18, 2019
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  9. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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    You can buy chrome parts for under the hood and try to convince your self that makes it 'better'. In this case the major improvement in this solenoid is that is a flashier color. It does the same job as the stock part.
     
    #49 JimboPalmer, Apr 18, 2019
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  10. Royston.K

    Royston.K Member

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    Took it out last night to check and gave it a little brake clean.

    As I've mentioned my interest is in restoring the fuel economy as I'm getting as average around 19-20km/l on a 2012 Prius c with 52k KM on the odometer.

    Running Michelin Pilot Sport 3 195/55/15. I'm amazed at the fuel economy you're getting and I'm going to visit a ecu tuner to see if his tool is able to remap my ECU.

    Recently changed ATF WS and Engine Oil 0W20 both with Xado Atomic Metal Conditioner & Revitalizant added.

    If this solenoid is able to work with ECU remapping that would be an added bonus for me and I'll be putting the Prius C on a dynapack to measure the difference. Pre solenoid and post solenoid. As well as if remapping with it shows any additional gains.
    IMG-20190418-WA0113.jpg
     
    #50 Royston.K, Apr 18, 2019
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  11. Max Taiwan

    Max Taiwan Active Member

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    Hi Jimbo,

    I'm giving away one Red bullet for my birthday.
    From now until then I have a lot of work to catch up for my PhD lab work.
    I look forward reading your reason for wanting one. Hope you are still interested.
    I'll go through the posts Tuesday morning. I am GMT+8 So selection will be Monday late evening for most.
    After selection I will send the Red bullet within the week. I ask nothing in return. No review, no dyno( thanks Royston you are too kind but go ahead if you want to anyways) no praise and above all no need to return it to me, its yours to keep for good, and all I hope from it is you enjoy it as much as I do.

    Sincerely enjoying your contribution,

    Max Shiau
     
    #51 Max Taiwan, Apr 18, 2019
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  12. ztanos

    ztanos All-around Geek!

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    In theory, the only thing this should be doing is pushing oil to the cam faster... could this change engine characteristics and give a "pep"? Maybe... but honestly, the only thing it's really doing is getting oil to the system faster and prolonging the life of the internals.. but if you're concerned with that on a Toyota... you must be dogging it hard.
    In the high performance world, this "upgrade" is more for longevity than horsepower.

    But please, Max, post your dyno results and let's see what it does. I'm curious.

    I'd also be curious if you could get a MPG rating on the dyno. Don't know how familiar with the dyno guys you are, but I'd love to see if you could cruise control it at say 55mph on the dyno and run it for a specific distance and tell us the MPG differences.

    If it gives both MPG increase and HP increase then you have a gem.
     
    #52 ztanos, Apr 19, 2019
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  13. Max Taiwan

    Max Taiwan Active Member

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    By the way gents and ladies, the selection will be random.
    I'm going to ask my six years old to pick a number out of the box. I'll have each of your posts and name written down in a hat for her to draw. You can even say you want one to prove it doesn't work.
    Good luck!
     
    #53 Max Taiwan, Apr 19, 2019
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  14. Max Taiwan

    Max Taiwan Active Member

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    Dyno results are up top for a Toyota Altis. I am eager to see the results myself for the Prius.

    We are trying to see if we can eliminate the EM output on the run. Or even better, run with lower battery charge with the Red bullet and see if it beats the OEM with a higher SOC.
     
    #54 Max Taiwan, Apr 19, 2019
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  15. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    I have to admit, I'd be curious about a controlled test- I wonder if there is a difference between a worn valve vs. a new OE valve.

    Sometimes a new part works better only because the thing it replaced was actually worn out.
     
    #55 Leadfoot J. McCoalroller, Apr 19, 2019
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  16. ChapmanF

    ChapmanF Senior Member

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    Two channel DSO monitoring the crank and cam position would still be the clearest way to show whether anything different is happening at all.

    If it isn't, than any other claimed differences in pep or mpg are going to be the result of other influences that haven't been controlled for.
     
    #56 ChapmanF, Apr 19, 2019
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  17. Max Taiwan

    Max Taiwan Active Member

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    You are more then welcome to put your name down for the draw and find out for free.

    Year of the vehicle, kilometers and a photo of the old part out of the engine which takes less then 10min. Will get you in the draw. Good luck!
     
    #57 Max Taiwan, Apr 19, 2019
  18. Max Taiwan

    Max Taiwan Active Member

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    Well i hope you will try and enter the draw to put one in for free and see if you feel a difference, then hey let us know or not is your choice. If it does feel differently then you can research about and run the test to see what is happening or just enjoy it. If it dosent feel different at all then you got a brand new red paper weight for free. I'll even pay for the shipping for you to send it back if you don't like a oily paper weight. Or maybe its just the color.
    But if you feel your prius C has enough pep and don't need anything more, then this product won't be for you even if it works. Good luck!
     
    #58 Max Taiwan, Apr 19, 2019
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  19. mohsin

    mohsin Member

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    Toyota Aqua; 2014
    Milage; 28,900 kms

    Lucky me dont have any part out of the car so far.
     
    #59 mohsin, Apr 19, 2019
  20. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Thank you for the kind offer! Unfortunately I'll have to decline- I don't want to change parts while our car is still under warranty, and it would be a disservice to you to ask you to wait until warranty expiration before I could offer any feedback.
     
    #60 Leadfoot J. McCoalroller, Apr 19, 2019
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