Gizzmo IBC - help me get it working!

[Hydra]

Hey all,

Trying to get a Gizzmo IBC working on my car (1JZ-GTE w/ twin RB20 turbos) but I can't for the life of me get it to go above standard boost, in this case 7psi.

I've checked that the solenoid works fine, which it does. I have left the duty cycle at 10% on the IBC and done a few runs at full throttle in 3rd to establish a baseline of sorts. When I switched the car on next I turned it up to 20% to see if it'd increase at all, but it didn't.

Any suggestions on what to try next? The destruction manual is pretty poor at explaining the actual setup proceedure, just says to make the duty cycle higher to get more boost pressure.

I am thinking about grabbing the apexi solenoid I have layering around to test that the IBC is actually trying to pulse the solenoid. Thats the only thing I can think that might be causing it to not work if the solenoid isn't getting anything from the IBC - could be user error in the setup of the IBC I guess. I checked the continuity of the wires going to the solenoid and they are fine. Also getting a boost reading on the IBC, which displays on startup/program change.

Thanks in advance!

[Officer Doofy]

Do you have the instructions, you set the boost pressure you want to achieve before playing witht the duty cycle.

http://www.gizzmoelectronics.com/Sup...struction.html

[Hydra]

Interesting - I took a look at the 1.06 manual and it's different to the one included with the one I bought (which was full of engrish).

Thanks - I'll give it a shot.

[Hydra]

Emailed Gizzmo about this as well - I am surprised to have gotten a response back within 12 hours!! Thats an unusually good amount of support from a car parts maker on a weekend.

Anyway, here's what they had to say:

Does it display boost?

If so, purchase a syringe from a pharmacy (about 50 cents) and set your duty
cycle at 50%

With the IBC powered up apply pressure to the pressure port on the back of
the unit and listen to see if you can hear the solenoid clicking.

If you can't, remove the solenoid plug and feed 12V and earth into the 2
wires that go to the solenoid at the plug at the IBC end so that we can be
sure the loom and all connections are sound.

So I'll be trying that too

[Hydra]

Syringe test shows the solenoid is clicking away nicely, but changes to the settings haven't helped.

I've followed these instructions:

Start the vehicle
Wait until the screen goes to main display menu and then
Press and Hold Button 1 for four seconds
The Screen will go to the Duty cycle menu, in this stage the Button 1 will
flash
Option 1:
If you do not wish to change the setting, do not push either button for
five seconds and the screen will automatically go back to the main display.
Option 2:
Press Button 1 to increase the duty cycle or Press Button 2 to decrease
the duty cycle.
E.g. when the setting of the duty cycle is 11, pressing Button 1 will
increase the duty cycle to 12 and pressing button 2 will decrease the duty
cycle to 10. Holding down Button 1 or Button 2 will increment or decrement
the duty cycle continuously.
Once you have finished adjusting the duty cycle, do not push either Button
for five seconds and the screen will go to the Boost Pressure display.
The Button 1 will be flashing and, the boost controller will keep track
of the highest pressure achieved since setting the Duty Cycle，at this
time the Solenoid will be clicking and you must drive the vehicle though
second or third gear at full throttle to achieve the maximum boost
obtainable since setting the new Duty Cycle.
Once the boost controller has achieved the maximum boost, activates either
Button 1 or Button 2 to set and save the Boost Pressure, after this the
IBC will regulate the new boost pressure that you have set and the screen
will go back to the Main Display Menu.

It says button 1 will be flashing after changing the duty cycle, but mine doesn't flash after changing it. Perhaps I am being a n00b about this. I must have missed something here!

[Officer Doofy]

Dunno mate, i will be setting up mine soon and will let you know if i have similer troubles.

7psi sounds quite low but. What size exhaust are you running. Have you checked to see if your wastegates are working? ie not stuck open

[Hydra]

It does sound low, but they aren't standard turbos. The wastegates have 7psi actuators on them, and they are freely moving.

Bleed valve works fine so it's gotta be the IBC and the way I'm trying to use it.

[Pube]

Try pumping up the duty cycle to around 50+. I wasnt getting much love from myne till around to 50 mark. I wasnt sure how to set it up properly either when it was suppose to flash or something. Just turn up the duty cycle!

[Hydra]

Alrighty I will Thanks!!

I actually re-read the destructions from the website - the old version has the better description of how to get started, not the new one. The new one has pretty pictures and colours but lacks a lot of the useful text that was in the original. And they claim it's .01 versions better.

Fingers crossed I'll get a chance to test it tonight - though I think my clutch is going to start slipping.

[YLD-16L]

Have I read this correctly? You went from a duty cycle of 10% to 20% and because you saw no measurable change in boost gave up at that point and went trouble shooting?

Starting with such a soft wastegate spring you are always going to need to inhibit a fair a bit of pressure seen at the wastegate to see a measurable rise in boost. Going from 10% - 20% duty cycle obviously doesn't restrict anywhere near enough to raise boost, so step up another 5% and another 5% etc until you start to get close to your desired peak psi, then just step it up in 1-2% increase until you reach your target.

Once all that is sorted then you can look at adjusting the gain.


These things are about as simple as it gets to set up and don't be surprised if starting from a base line of 7psi that you need to get up the duty cycle a fair bit (over 50 - 60%) to see significant boost gain, there is nothing wrong with that either so don't worry about it.

I have a base pressure of 8psi and need a duty cycle of around 60% to reach ~17.2psi, about 52% duty cycle see 15.5psi, and I can't remember the other two settings and there duty cycle but you get the idea.

[Hydra]

I also tried 50% duty cycle, 70% and so on. No change.

I'm gonna review it all tonight with a clear mind - I am sure it's something I have done wrong.

[YLD-16L]

Ah fair enough then.

Plumbed into 2 of the 3 ports on the solenoid correctly?

Sounds like it will be something simple as you're currently not restricting any line pressure to the actuators.

Either the unit isn't pulsing the solenoid (but you say when tested it is pulsing) or the plumbing is incorrect, which at this stage sounds like a more likely issue.

[CrUZida]

Mine does the opposite of yours.
Its spike city.

At 30% she'll spike to about 11psi, then settle to ~8.5psi
At 35% she'll spike to about 11.5psi, then settle to ~9.0psi
Anything about 35% she spikes to boost cut (11.8psi), but will hold ~9.5psi if I gradually apply the throttle.

If anyone has any help with this, let me know. Its worse on cold nights.


btw Hydra, you are using #1 for duty cycle, and #2 for gain? Just making sure.

[YLD-16L]

Mine does the opposite of yours.
Its spike city.

At 30% she'll spike to about 11psi, then settle to ~8.5psi
At 35% she'll spike to about 11.5psi, then settle to ~9.0psi
Anything about 35% she spikes to boost cut (11.8psi), but will hold ~9.5psi if I gradually apply the throttle.

If anyone has any help with this, let me know. Its worse on cold nights.

How long is your reference line to the Gizzmo unit? Gain is 0?

btw Hydra, you are using #1 for duty cycle, and #2 for gain? Just making sure.

Good point!

[CrUZida]

How long is your reference line to the Gizzmo unit? Gain is 0?

Line is now as short as physically possible, while still making it look neat (ie following existing lines). Note line used to be about 3m long, made no difference when I shortened it.

Gain can be set to any value I like, doesn't noticably change a thing.