Bulk boost converter

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Peterson
Posts: 122
Joined: Mon Aug 17, 2015 2:35 am

Bulk boost converter

Postby Peterson » Wed Aug 03, 2016 3:06 pm

Just an idea that is floating around a long time.Assuming that we have a hard time dialing proper injector voltage compensation or we can't find proper info doesn't a converter like this will solve our issues or help a lot for a more precise and stable tune? For example there is a DC-DC 8v-32v input to 12v fixed output converter.That means that our injectors will receive always 12v no matter what our loads are or alternator output.Share your thoughts people.

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HaltechMatthew
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Re: Bulk boost converter

Postby HaltechMatthew » Thu Aug 18, 2016 4:37 pm

It doesn't work like that.

The ECU uses some of the flyback, and screwing with the supply can cause issues.

In the end, we are back to our old golden nugget of talking about dead time. Its only one of the tables. Honestly most people get half a dozen of the tables wrong by a bigger amount than they do by simply leaving the default dead time table alone.

If you want a poor mans way to test it. Tune your engine perfectly, then disconnect the alternator and adjust the table to keep the AFR correct. Then extrapolate the curve in both directions. In practice it takes less time to actually find it than it does googling it.

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Peterson
Posts: 122
Joined: Mon Aug 17, 2015 2:35 am

Re: Bulk boost converter

Postby Peterson » Thu Aug 18, 2016 9:15 pm

HaltechMatthew wrote:It doesn't work like that.

The ECU uses some of the flyback


Oops wasn't aware of that.Then using a converter is a very definite no-no.Thank you matt!


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