95dc2teg

Hey guys i have been looking up someways to create/make you electronic stand alone boost controller. I would like to be able to adjust boost from high to low from my seat without having to get hondata, or spending $200 on an electronic boost controller. I have come across different ideas and have some questions.

Question one:

Has anyone tried combining a MAC valve with a manual boost controller to create a dual stage type boost controller that can be controlled in car with a on/off switch to toggle between high and low boost. If anyone has done it can you share your experiences. Here is a picture I found online about how it would be setup and what I am talking about.



Question two:

has anyone bought a PWM 12v DC switch such as this for example.

http://www.ebay.com/itm/PWM-Pulse-Wi...item1e7372e48b

Can this PWM switch be connected directly to a MAC valve and used to adjust it?

Again i'm just seeing if anyone has tried to come up with anything or some input on this as I just started researching and it has caught my attention. Thanks.

Muckman

iTrader: (2)

1.) That might work but Im not sure how it will react without a vent. However you could run the mbc on the side port and the ebc on the top port of the wg to apply reference pressure. That will achieve the same goal and its simplier.

2.) Mac solenoids are 5.4 watts or less so Im not sure if that pwm pulse controller will work either.

3.) But there are also remote adjusted mbc's and even dual stage mbc's that present an easier solution.

4.) You dont need Hondata to drive a pwm solenoid. You can do it with ANY of the ECU based tuning platforms. All are cheaper than Hondata, some are even free. You just need the pwm components soldered to the ECU board which are also very cheap ($15).

Muckman

iTrader: (2)

You could use the solenoid as a switch for the boost reference pressure with both outputs hooked to a mbc (each set to a different boost).
Both mbc's are plumbed to the side port of the wg with a check valve inline on both.
Then you could use a simple 12v toggle to flip between the two mbc's.
Cool?

95dc2teg

In reference to our answer in 1 I see how that will work but wouldn't having the ebc on the top energized with a 12v source causing it to be open have too much pressure over powering the mbc and keep the wastegate closed causing overboost? Also the vent you are talking about, there will be a Pre existing one on the mbc if that's the type of vent you are talking about?


To answer 4 I do realize there are other programs that support pwm boost control but with tho they programs they are set and not able to change correct? I would like to be able to change it on the fly if need be.

Thank you so much for your replies!

Muckman

iTrader: (2)

My alternative solution in #1 assumes a pwm controller is used to drive the solenoid which will apply boost reference to the top wg port. The pwm duty amount would be variable and allow you to adjust the boost above the mbc setting.

Im unsure how the system will behave without a vent. All EBC configurations I have tested use a vent.

In regards to your software question most Honda based tuning platforms allow a high/low boost toggle input, plus boost by gear. I feel this is a far better solution that you need to reseach more thoroughly.

wantboost

iTrader: (2)

Honestly I don't see the point. You're basically re-inventing the wheel. All sorts of boost control options exist tjay do exactly what you want already. Why complicate things

rudebwoy

iTrader: (1)

are you running without a engine management system? as far I know all the available EMS on the market support boost with multi stage. are there any out there that does not?

95dc2teg

I am currently running eCtune. If there is way to setup a dual stage boost controller controlled by a on/off switch and utilizing the Mac valve I currently have then by all means I will look into it. My car is already tuned on eCtune, I was trying to figure out a way that I can adjust my boost pressure without having to go back to my tuner and modifying my chip and without spending 200-300 dollars on a standalone electronic boost controller or dual stage manual boost controller. I figured that since I have my vibrant manual boost controller setup at 17psi (10 psi spring in wastegate) I could use the Mac valve I already have to "bypass" the mbc so that I could run wastegate pressure at a flick of a switch or vice versa. If anything I don't think it's complicating things as I already have the parts, I won't have to drive 100 miles to have my tuner setup a new chip for boost by gear or a dual stage setup, and it will be cost effective, that is if it actually does work. I was just curious to see if anyone has tried it out and their opinions on it.

turbo-2nr

http://turboxs.com/shop/boost-contro...ontroller.html

95dc2teg

Thanks for your reply.

95dc2teg

Alright, well since I had the parts already I went ahead and tried it anyways.

How I set it up:

1) I used a boost only source from the manifold (utilizing a check valve) and connected to port number 2 of the MAC valve (COMM inlet).

2) I then placed a vacuum line from port 3 on the MAC valve (Normally open) to the bottom of the wastegate. Since this port 3 is normally open it is run on the wastegate spring pressure which in my case is 10psi.

3) Then I placed a vacuum line from port 1 on the MAC (normally closed) to the bottom of my manual boost controller (Inlet).

4) Ran a T-fitting from the side of the manual boost controller (outlet) with a one way check valve to the line coming from port 3 of the MAC valve that was originally going to the bottom of the wastegate.

Now by having the MAC valve NOT energized, port 3 is always open and therefore it is running wastegate spring pressure. By flicking a switch i set up in the cabin, it energizes the MAC valve closing port 3, and port 1 (normally closed) opens running the manual boost controller (which has been preset to 17psi in my case).

IT WORKS! and works GREAT. with the switch off it runs the wastegate pressure of 10psi rock solid throughout the RPM range. With the flick of a switch it holds a solid 17psi without issue. This will allow me to atleast hook up in 1-2 gear, or just let have an option to changed between high and low boost whenever i want. options are nice!

If someone was to purchase all the parts to complete this project, it would be about:

$20 for a ebay generic manual boost controller
$35 for a MAC valve
$10 for miscellaneous wire, vac line, check valves
for a total of $65.

I feel that for the $65 spent, its a pretty good deal to acquire a electronic dual stage boost controller that allows you to toggle between low boost setting via spring rate wastegate pressure, and a high boost setting via manual boost controller. It definitely beats spending $250-$300 on a EBC or a dual stage type manual boost controller IMO. Any input, questions, or critiques are definitely welcomed.

I will be posting pics up as soon as I can to better explain how it is setup and how it works!

95dc2teg

Here are some pics to go along with my explanation of how I set it up.

Coming from boost source


Boost source comes goes to bottom right of the MAC valve
And the left side of MAC valve goes to bottom of mbc.

Muckman

iTrader: (2)

Are you burning chips or are you on the Demon with EcTune?
All you need are the pwm components and the ability to upload your calibration.
And then you can have boost by gear controlled by the ECU.

$10 for the pwm components + $30 to have them install in ECU if you need.
http://www.xenocron.com/hondata-s300...nts-p-226.html

95dc2teg

I do not burn my own chips. I have a socketed ecu. My tuner tunes my car with his ecu/computer setup utilizing eCtune, then burns the calibration onto a chip and he puts it in my ecu.

And I do realize that all I need are the pwm components and the ability to upload. I have Hondata s300 in my built turbo gsr.

Muckman

iTrader: (2)

Well done then!

BigMike0147

I can't see the pictures, but the description looks really nice. LOL Good job sir! My ECU is actually wrapped up getting ready to ship off to Xenocron for the soldering/mods. I can't wait to be able to hook up in at least 2nd gear! LOL