Anything not specifically related to the Speeduino hardware. Eg sensors, bluetooth, displays etc
By MadScientistDad
#56181
So firstly, thank you to all of you guys for the help. I am super excited about getting this beauty running and I really appreciate the help and friendliness on here.

My question is, on the Dropbear's 8 injector outputs, Can I just wire the injectors to the 8 outputs based on the firing order, or will I still need to pair them off and use only 4 outputs? I do plan to add a trigger wheel at some point and move to sequential injection, but for now which way do I wire it?

Example :
Inj1 to Cyl 1, Inj 2 to Cyl 3, Inj 3 to Cyl7, Inj 4 to Cyl 2, Inj 5 to Cyl 6, Inj 6 to Cyl 5, Inj 7 to Cyl 4, Inj 8 to Cyl 8
or
Inj 1 to Cyl 1 & 6, Inj 2 to Cyl 3 &5, Inj 3 to Cyl 7 & 4, Inj 4 to Cyl 2 & 8
By ric355
#56189
theonewithin wrote: Sat Mar 26, 2022 6:10 am Read the wiki.
Have you even read the Wiki yourself? If you had you would know that in the injector wiring section it still states that a V8 must be configured in paired mode. This is obviously information that predates the dropbear development.

If you cannot add something useful then don't post replies. It's a waste of your time and a waste of everyone else's.

For the OP, the dropbear does of course have 8 injector channels and you can use it full sequential by connecting in the firing order as per the first of your two examples. You will of course need a cam signal as well as a crank signal for this to work. Without a cam signal you can use semi-sequential instead. This uses all 8 outputs and mirrors the firing to make it work like paired does (has to be configured 2 squirts or more consequently). I have not tried it personally but that's how it should work if it mirrors how the 4 cylinder configurations of earlier devices work.
By theonewithin
#56200
So you haven't understood the wiki?

Ignore anything to do with V8. It is not relevant.

You want to do sequential.

What does the wiki say to do when wiring for sequential.
By theonewithin
#56201
ric355 wrote: Sat Mar 26, 2022 9:39 am
theonewithin wrote: Sat Mar 26, 2022 6:10 am Read the wiki.
Have you even read the Wiki yourself? If you had you would know that in the injector wiring section it still states that a V8 must be configured in paired mode. This is obviously information that predates the dropbear development.

If you cannot add something useful then don't post replies. It's a waste of your time and a waste of everyone else's.

For the OP, the dropbear does of course have 8 injector channels and you can use it full sequential by connecting in the firing order as per the first of your two examples. You will of course need a cam signal as well as a crank signal for this to work. Without a cam signal you can use semi-sequential instead. This uses all 8 outputs and mirrors the firing to make it work like paired does (has to be configured 2 squirts or more consequently). I have not tried it personally but that's how it should work if it mirrors how the 4 cylinder configurations of earlier devices work.
I have read the wiki many times and also updated and adjusted many parts of it.

The wiki is clear on what you need to do for sequential.

It is better for someone to learn how to do something than to tell them what to do.

You assume they read the wiki. Maybe they haven't.
By MadScientistDad
#56202
Hey guys,

Yes, I have read the wiki but since I am using my TFI distributor sequential is not an option so running the injectors as Semi sequential seems like what I will need to do. As a side note, ric355 is absolutely correct. The wiki is still based around only having 4 injector outputs not 8. While sequential is nice, I already have a TFI distributor and the benefits of sequential don't really justify the cost of adding a trigger wheel and a cam trigger to the car. Not to mention having to add COP to it as well. I originally asked the question because I was uncertain and thought it was better to ask than just guess.
By ric355
#56206
theonewithin wrote: Sun Mar 27, 2022 12:33 am It is better for someone to learn how to do something than to tell them what to do.

You assume they read the wiki. Maybe they haven't.
The issue I have with the blunt response of 'read the wiki' is that it does not achieve the goal you're suggesting. It just comes across as rude and unhelpful. The least you could do is explain why you think reading the wiki would help with the question at hand. In this case I think if you had tried to do that you would have realised that the answer to the question is not actually there.
User avatar
By EdMcGuirk
#56317
In general I find it lazy and bordering on rude to point vaguely off into the sunset instead of supplying a link or at least supplying a key word that could be accurately searched on. Any other response is simply a statement of 'You should have known that.'

Any answer supplied is not only an answer to the question, it is also an answer to any future person looking for a similar answer. Which is the reason I usually try to keep jargon, abbreviations, acronyms, and pronouns to a minimum (after all, I think I know what I mean, why make the reader work to follow along) and avoid links to Ebay which will be gone by the time anyone wants to look at them.

But, whatever, I'm just a pedant.
/rant sorry
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