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 Post subject: DBW Cold Start tuning
PostPosted: Tue Oct 15, 2024 1:38 pm 
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Joined: Tue Mar 14, 2017 3:10 am
Posts: 82
hi
Is there any definition tables for the post start dbw open angle?


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 Post subject: Re: DBW Cold Start tuning
PostPosted: Wed Oct 16, 2024 1:52 am 
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Joined: Thu Dec 18, 2014 10:31 pm
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Location: oregon
what calibration ID?

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 Post subject: Re: DBW Cold Start tuning
PostPosted: Thu Oct 17, 2024 2:16 pm 
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A8DK100Z


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 Post subject: Re: DBW Cold Start tuning
PostPosted: Fri Nov 01, 2024 12:20 pm 
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Joined: Tue Mar 14, 2017 3:10 am
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I was trying to find these tables. but no success.
It was nice a table with a timer after cranking for open the dbw and lower the timing.
or is there another way to warm the sytem with retard ig timing and don't lose rpm?


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 Post subject: Re: DBW Cold Start tuning
PostPosted: Fri Nov 01, 2024 12:26 pm 
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Joined: Sat Jul 06, 2013 12:55 pm
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Location: NI
whats the actual issue you're having though, have you fitted some kind of extra large throttlebody that's giving you problems? If its for cold start then normally timing/fuel and the correct idle RPM target will get you there without much fuss (assuming all the rest of your tables are setup to match your car).

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 Post subject: Re: DBW Cold Start tuning
PostPosted: Mon Nov 04, 2024 8:21 pm 
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Not an issue at all.
A customer asks if its possible, for the looks. He wants to hear the turbo spool when it cold start.


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 Post subject: Re: DBW Cold Start tuning
PostPosted: Tue Nov 05, 2024 12:26 pm 
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are you trying to describe rotational idle?

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 Post subject: Re: DBW Cold Start tuning
PostPosted: Thu Nov 07, 2024 1:44 pm 
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not rotational idle.
like this:
https://youtu.be/x1ZDvnEpo9I?si=lErc9cxygyms6IHf&t=1592


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 Post subject: Re: DBW Cold Start tuning
PostPosted: Thu Nov 07, 2024 1:50 pm 
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would be very unusual for a 4 cylinder subaru to generate enough exhaust flow to spin the turbo at idle OR to hear it through the long and bendy turbo inlet

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 Post subject: Re: DBW Cold Start tuning
PostPosted: Wed Nov 13, 2024 4:03 pm 
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a 2.5L subaru can handle that much exhaust flow.


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 Post subject: Re: DBW Cold Start tuning
PostPosted: Fri Nov 15, 2024 2:29 am 
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Video appears to be running negative timing, which will help turn turbo wheel. There's no positive boost, (still relative negative compared to atmosphere).

You can adjust idle timing based on temperature if you desire this effect, along with adjusting the idle airflow and target throttle positions.

The stock system uses negative timing too, at start up to help warm catalytic converters.


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 Post subject: Re: DBW Cold Start tuning
PostPosted: Thu Nov 21, 2024 12:45 pm 
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The Lorax wrote:
Video appears to be running negative timing, which will help turn turbo wheel. There's no positive boost, (still relative negative compared to atmosphere).

You can adjust idle timing based on temperature if you desire this effect, along with adjusting the idle airflow and target throttle positions.

The stock system uses negative timing too, at start up to help warm catalytic converters.


That's what i'm thinking but the results dont get very similar, because when I increase idle rpm at low temperature, the timing didnot decrease.


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