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Cheap VAFC, Boost Controller + (Turbo Timer)

Old 12-23-2003, 12:22 PM
  #1  
0.5 BAR
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Default Cheap VAFC, Boost Controller + (Turbo Timer)

Okay you guys are pissing on me for the missing link deal. Fine Fine Fine, here is one better.

I am 90% finished my design of a VTEC controller, Electronic Boost controller, Missing Link, and AFC all in 1 package. The only catch is the the AFC is not tunable across the RPM band. the same setting will be applied across the whole RPM band, this is to be used with upgraded injectors.

Features
VTEC: allow you to adjust your VTEC engangement at any RPM
Electronic Boost controller: Includes boost soleniod, set your boost level instantly with a turn of a dial.
Missing link: limits the output of the MAP voltage seen by the ECU to 2.75 volts( civic) or higher depending on the car.
AFC: trims the MAP voltage by a user set percentage across the RPM band, to be used with upgraded injectors.
Turbo Timer: I might include it if i have the time.

There is no Digital display, so you have to play with the dials or use a voltmeter to get the right settings.

My system uses the MAP sensor to read the boost level, it will work with a stock civic MAP sensor, with a 2 bar map sensor it might have problems. But I can make one for a 2 bar map sensor.

Anyways when I tally up the materials and labour I think I will charge about 115-150 USD for it. BTW I am not selling anything yet, so MODs please do not delete this because you think I am selling it now. When I am ready to sell them I will clear it with you guys first.

pics will come probally next week. it will be a black box 8cmx3cmx5cm with 4 dials (VTEC, MAP scalar (AFC), Map Cutoff (limiter), Boost level controller) as well as 4 leds to signal; stock VTEC activiation ( From ECU), Current VTEC engagement, if MAP has reached cutoff, and Wastegate OPEN). The device is to be mounted in the car so the driver can change their setting instantly even when the car is running.

So with My Device, no more; fishtank valves, FMU, or Manual boost controller. Well actually a Manual boost controller or a cutter valve is recommened, it can be used to set the Max boost level of the Electronic boost control system so that if catastrophic electronic failure occurs the wastegate will open based on the Manual boost controller (Or cutter Valve) setting. The Manual boost controller is only used as a saftey precaution, it will probally never be relied upon,but better safe than sorry. You guys can pick up a cutter valve at homedepot or I might include one for like 10 bucks more.

Anyways that is my rant for today. I am working on a Digital version with a nice LCD display and AF tunability for every 100 RPM increment. It will display; RPM, boost level, AF setting, Vtec Setting, throttle position ect... etc.... It will pretty much be a nicer looking version of my current device except you can fine tune the AF settings based on RPM and Throttle position. But this will cost more because it requires much more work and much more expensive components.

Oh yeah I came up with a name for my current device; FullBAR VAFCBCT (Vtec-Air Fuel Controller-Boost Controller-Turbo Timer), I know it is a mouthful, any better suggestions. Oh yeah I am gonna name my brand of stuff "FullBAR" as is Full Barometer with conitations to FUBAR (Fucked Up Beyond All Recognition) eith that or "Norice" as in "No Rice" but pronounced "Noris". Anyways give me some feedback on this stuff. I am gonna try to get a unit to the Head guy at HMT for him to test and vouch that my stuff works and is a killer deal.

Now I gotta get back to work.
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Old 12-23-2003, 11:27 PM
  #2  
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Default Re:Cheap VAFC, Boost Controller + (Turbo Timer)

once again we here at hmt prefer knowledge to product. I can make an afc that only scales once, not per rpm, myself with only $10 in radioshack equipment, if anyone wants to know how just pm me and I'll get you the info.

the only reason I would consider buying this is due to the vtec thing because I have no idea how to do that, but $100-150 is out of the hmt budget, unless you get that afc based on tp and by 100 rpm. goodluck with this, I know it doesn't sound like it but I wish you well. If you could just build an rpm activated switch (the same idea as the adjustable vtec activation) I would be interested in buying a few if they were set at a fair price.
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Old 12-24-2003, 09:09 AM
  #3  
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Default Re:Cheap VAFC, Boost Controller + (Turbo Timer)

yeah you can get a simple voltage divider for the MAP,but you would still get a CEL light at anything over 6 psi (if you are running -40% across the board). My design is a proper mixed analog design (mixed meaning digital and analog together). It has proper buffering stages to protect from thermal drift and voltage fluxuations. There is simple and there is elegant, my design is elegant, your design is simple.

I spent alot of time on my design, I am an electrical engineer from a prestigious university, so i know how to design. I would like to make a bit of money on my design so that I can have the funds to develop better products. If i can get support on this stuff, my future products will blow everything out of the water. Yes I am looking to kill hondata and any other stand alone fuel management system, but that is in the future.

Besides the most expensive piece of equipment in my design is the boost controller circuit and the boost soleniod. My price includes a boost soleniod. 115-150 just for an electronic boost controller with soleniod is still cheaper than a brand name Manual boost controller and atleast half the cost of a brand name electronic boost controller.

All the rest of the features are just gravy ontop of the electronic boost control feature.

So give me a break.

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Old 12-24-2003, 09:30 AM
  #4  
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Default Re:Cheap VAFC, Boost Controller + (Turbo Timer)

well man, honestly, all of this is really great, but you just keep posting talking about your ingenius electrical devices, i mean, just update one of your other threads or something, they're all starting to look/sound the same. honestly, these threads are worthless until you have done some beta testing with a finished product.
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Old 12-24-2003, 09:44 AM
  #5  
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Default Re:Cheap VAFC, Boost Controller + (Turbo Timer)

sorry if my previous post was a bit spiteful. But from the very start all I wanted was input, if some tunability across the rpm band is a must then I can incorporate limited tunablity, if the price is too high then I can lower the price and redisgn using a cheaper approach. Honestly in materials 5the costs about 50 bucks (remeber I include a boost soleniod) so if i charge 115 I am making 65 bucks. Plus I will donate a portion of proceeds to HMT. So there is the long and short of it. Anyone who wants to **** on me is welcome to. But I would perfer that people give me input and advice rather than just saying I am robbing them. Remeber I spent countless hours and bought alot of stuff for initial testing and design, must of been well over 200 bucks worth of stuff just to get to this stage.

So now please tell me what price i should charge? You want me to give away my design for free? well then in the future I will when I have a better design done, but considering the complexity of my design it would not be worth it for anyone to make it themselves.

Please compare my price to what is out there, feature for feature I can not currently match them %100, but I can offer much more value.

Vortech FMU: $100
cheapest Electronic Boost control system: $250
RPM activated VTEC switch: $50
cheapest AFC: $150
Greddy missing link: $50

Compare what I offer with what is out there. Intel CPUs are just $1 worth of silicon and maybe $20 bucks worth of metals but no one pisses on them for charging $500 per CPU, it is not the materials but the design that you pay for. In the end you get what you pay for.

Please give me feedback that is all I want, do not **** on me and say you can design something better for cheaper because unless u are an experienced mixed analog designer you are in no position to do so.

So in the end I am making about $65 bucks at $115 each unit, For every unit sold to HMT members I will donate $5 bucks to HMT and another $5 to pgmfi and maybe some to TurboD16 because honestly PGMFI and turboD16 offered me much more support than HMT does, without PGMFI I would not know ---- about jack. Afer all the donations I will net about 50 bucks from each sale.

Salut

Alan To

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Old 12-24-2003, 09:47 AM
  #6  
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Default Re:Cheap VAFC, Boost Controller + (Turbo Timer)

I have already tested alot of the stuff on my civic, I am at the stage of finalizing my design and doing PCB layout.
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Old 12-24-2003, 09:58 AM
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Default Re:Cheap VAFC, Boost Controller + (Turbo Timer)

well, i would say that tunability throughout the rpm band woud be a must. really, i think it's great what you have done, and in my opinion, the price is very reasonable. the only advice i have to you is when it is all finished. take some pics and do a full write up on features, tunability, user friendliness, etc., etc. then i'm sure they will say if they are as good as you claim they are, and with a donation of 5$ for every sale, i'm sure you'll have a sticky for a long time
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Old 12-24-2003, 11:20 AM
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Default Re:Cheap VAFC, Boost Controller + (Turbo Timer)

I understand you better now. for some input for you:

nobody here needs a missing link if they have an afc, they go against each other so you could remove the afc from your design. Will the ***** be marked? such as with boost numbers on the boost controller? If you would include a display, even if it's simple it would make the market for these much bigger and I could see the price going up a little as well. when do you plan on having a finished product?
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Old 12-24-2003, 01:16 PM
  #9  
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Default Re:Cheap VAFC, Boost Controller + (Turbo Timer)

okay okay,

I just did a redesign, for the afc portion.

here is my tunability

RPM Setting
0-3k A
3k-4k b
4k-5k c
5k-6k d
6k-7k e
>8k f

so below 3k it is the same setting, between 3k and 7k setting for each 1000xrpm, after 8k same setting.

is this enough resolution? is the same setting form 0-3k rpm okay?
feedback would be great.

Also seeing as that most people are not too crazy about electronic boost control, i will leave it out of the core design, i will also leave vtec out of the core design and also the turbo timer out of the core design.

so an AFC adjustable by 1000x rpm between 3k-7k @ $65
vtec option @ +$10
electronic boost control option @ +$15
boost soleniod @+ $40

now please give me feedback on prices and on the afc tunability requirement.

There is no display, the unit is a black box 8cm x3.5cm x 5cm. There will be Tunable resistors for each 1000xrpm setting (<3k,3k,4k,5k,6k,7k,>8k), there would be no real way know to exactly what your settings are unless you reference the position of the tunable resistors.

For the VTEC option another tunable resistor will be added.

for boost control option another resistor will be added.

I will add labels to each dial indicating what they are with one of those brother ptouch label makers.

on paper I have the new design 90% done, please give me feedback ASAP.
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Old 12-24-2003, 02:31 PM
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Default Re:Cheap VAFC, Boost Controller + (Turbo Timer)

whoops, I meant to say to remove the missing link from your design, not the afc.

I still think that the cost is a little up there. With a design this simple where the user has to do so much of the work in tuning it (figuring out where to put the ***** and what not) it should be cheaper. If you could figure out and mark all the ***** that would justify the price since more work has gone in. remember: we're all a bunch of cheap asses here.
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