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Gizzmo Ms-Ibc Dropping Boost

Ultimategtr
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Ultimategtr Proficient

Ultimategtr

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Posted

Hey,

I decided to hook up the ebc after a long time(was using link boost control instead).

Setting 1 set to 10 psi - DC - 20, Gain - 0

Setting 2 set to 17 psi - DC - 55, Gain - 0

Spike protection set to 0 - Running in closed loop. Not using Overboost etc or any other features that I know of.

Problem - High boost will drop to 10psi or so in higher gears. Eg, Take off in 1st - 17psi.. 2nd, 3rd on wards I only see 10~psi.

What am I doing wrong? btw, not a factory turbo and setup.

I'll go for another drive today to confirm the above, but from my drive the other day that's what I noticed.

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DVS JEZ Grand Master

DVS JEZ

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Posted

Most ebc if u turn the gain up it helps to hold the boost from dropping off. But if urs is not reaching the desired boost in higher gears then i would try running open loop so it uses duty cycle only.

Why dont u like the link boost control?

Ultimategtr Proficient

Ultimategtr

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  • Author
Posted

Most ebc if u turn the gain up it helps to hold the boost from dropping off. But if urs is not reaching the desired boost in higher gears then i woukd try running open loop so it uses duty cycle only.

Why dont u like the link boost control?

Hmm.. havent tried open loop. Guess I could try that out, thanks! :)

Gain definitely needs to be turned up.

Hmm, I did have gain up as well. I will go for a drive and test upping the gain to around the same as DC. If that doesnt work, I'll try open loop mode.

What a weird issue eh?

Thanks for the help so far guys.

Ultimategtr Proficient

Ultimategtr

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  • Author
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No, not a stock turbo. Using a 10psi R32 actuator.

Issue seems to be resolved. I tried open loop - no go.

Increased the Gain to 35. Will fine tune it later on, but it seems to be okay and holds 15psi through 1,2,3rd(Couldnt go higher as traction/public roads). Have my DC set to 55. Car is tuned to 1.1 bar, but thought Id set it to 15psi instead of 17.

With high boost I need to upshift very quickly as it gets to the limiter in a hurry, lol.

W0rp3D Grand Master

W0rp3D

Posted
Posted

the basics are that the duty controls how much boost % you have and gain controls how quickly it will get there, turn the gain up too high and you will over boost, just have to play with it to get the perfect combination.

On your original settings it would have taken ages to get full boost, should be heaps better now that you have increased the gain, the way i did mine was to keep turning the gain up till it started to over boost then turn it down a little.

One way to fix the traction issue is using the button you got with it (if you have the same unit as mine), you can use it as an overboost button or you can use it to cycle through the presets.

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