Boost By Gear Open Loop Not Available?

[shaodome]

This is on the 1.4 Alpha 10 firmware and attached is a screen shot of what I'm talking about. The VSS1 is enabled and RPM/VSS gear detection is configured.

The "tool tip" for boost vs speed/gear states that it can be either duty cycle or kpa target, but they only become accessible when I changed the algorithm from open loop to closed loop. What is the correct way to set boost by gear and relevant duty cycle?

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[nathaninwa]

I'm working on a closed loop boost issue right and Im running open loop boost by gear. I'm triggering mine based on a blended table, under boost table switching I'm using blend curve 6 I think

[shaodome]

Thanks nate. I was looking at that. Did you just setup blend table 6 with an x axis of gear and put basically 1-5 on it? I tried that and it didn't work.

[nathaninwa]

Yes. My current msq is in ms3 development, under pre1.4.10 boost control. The thread is near the top

[muythaibxr]

Shaodome, out of curiosity, why are you not using closed loop?

Ken

[shaodome]

Shaodome, out of curiosity, why are you not using closed loop?

Ken

86mm turbo, 3.0L, open downpipe and nitrous. Boost comes on so hard/fast with that combo. We haven't had a lot of time to work with the closed loop on setups like that as the only place it can be done is the track. MS boost, as amazingly flexible as it is, takes a good bit of time to get perfect, which unfortunately isn't a luxury we have right now with this car.

Am I correct that boost DC by gear is not available other than via the blend method Nate stated above? If so, the tool tip needs to be updated.

[muythaibxr]

Shaodome, out of curiosity, why are you not using closed loop?

Ken

86mm turbo, 3.0L, open downpipe and nitrous. Boost comes on so hard/fast with that combo. We haven't had a lot of time to work with the closed loop on setups like that as the only place it can be done is the track. MS boost, as amazingly flexible as it is, takes a good bit of time to get perfect, which unfortunately isn't a luxury we have right now with this car.

What do you think could be done to help there? Which part takes the time?

Can I also ask why you're using *alpha* code on a car like that? Wouldn't it make more sense to use stable code?

Am I correct that boost DC by gear is not available other than via the blend method Nate stated above? If so, the tool tip needs to be updated.

You are correct. Looking at the code those settings are only used in closed-loop mode. Tool-tip has been updated.

Ken