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3 stages of injection?

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Old 08-31-05, 03:44 PM
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3 stages of injection?

Anyone know what ecu can control injectors in 3 stages? Bank 1,2, and 3?
Old 09-01-05, 01:02 AM
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That's a good question, and I've never found one that does more than two!
It would be clutter, but at least you could put to good use all those "little" injectors you for laying around the garage... :P


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Old 09-01-05, 04:24 AM
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Damn so basically one would have to run an additional injector controller? How many injectors can these things actually run? All I see are units that control two extra.
Old 09-01-05, 03:29 PM
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Originally Posted by t-von
Anyone know what ecu can control injectors in 3 stages? Bank 1,2, and 3?
It can be done. I've seen it done on a custom to order basis from different manufacturers. I know Microtech does it.
Old 09-06-05, 09:31 PM
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I just found out that the ecu in the Rx8 controls the injectors in 3 stages.
Old 09-06-05, 10:08 PM
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Originally Posted by t-von
I just found out that the ecu in the Rx8 controls the injectors in 3 stages.
Old 10-06-05, 03:55 PM
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Originally Posted by t-von
Anyone know what ecu can control injectors in 3 stages? Bank 1,2, and 3?
I haven't done it myself, but with the Autronic SM4 you could have up to 4 stages on a 2 rotor.
Old 10-07-05, 03:22 AM
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Originally Posted by a7r
I haven't done it myself, but with the Autronic SM4 you could have up to 4 stages on a 2 rotor.
What about if it was on a 20b?
Old 10-07-05, 10:14 AM
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I think the AEM can..
Old 10-07-05, 12:06 PM
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Originally Posted by t-von
What about if it was on a 20b?
It depends on how you want your injectors firing. The SM4 has 8 injector drivers, so on a 20B you could have 2 stages of sequential injection. You could then rig up the other 2 drivers to maybe control 3 injectors each. Giving you 4 total stages, 2 fully sequential stages and 2 bank/batch stages. This isn't even counting the possibility of hooking injectors to the general purpose outputs, and using them to spray even more fuel.
Old 10-11-05, 09:00 PM
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Actually using one of the other out puts you could have 3 stages on a 20b also
Old 10-22-05, 06:26 PM
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Originally Posted by ac3wat3r
Actually using one of the other out puts you could have 3 stages on a 20b also

So running 3 for the primary, 3 for the secondary, and 3 for last batch (for a total of nine injectors) would be feasible with the SM4?
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