Skullzaflare Posted April 5, 2013 Report Share Posted April 5, 2013 anyone here used a 3.57 yet?i have one here, with everything, just curious on a few odds and ends Link to comment Share on other sites More sharing options...
importwarrior Posted April 5, 2013 Report Share Posted April 5, 2013 like what? scott87star is the go to guy. ask and im sure he might just check in and answer your questions. Link to comment Share on other sites More sharing options...
scott87star Posted April 5, 2013 Report Share Posted April 5, 2013 Here I be, yes I have, what are you curious about? Link to comment Share on other sites More sharing options...
Skullzaflare Posted April 5, 2013 Author Report Share Posted April 5, 2013 Well I'm sure you know that the 3.57 only comes preassembled. I have 4 mustang coils here, all 2 wire, so from my understanding that means they use an external ignitor. So would I need to mod in 373s for coil control? Seems info on the 3.57 is a bit lacking. Also, can I wire for 4 injectors and only use 2 until my manifold is done? Link to comment Share on other sites More sharing options...
scott87star Posted April 5, 2013 Report Share Posted April 5, 2013 The 3.57 board is a bit tricky as the ignition outputs require soldering to surface mount resistors. It's very doable, I've done it several times but its intimidating relative to through hole construction. Are you planning a wasted spark COP setup or fully sequential? Wasted spark would only require Spark A and B outputs, this link shows up to spark D which is the hardware limit for 3.57. http://www.msextra.com/doc/general/sparkout-v357.html You'll need a 330 ohm resistor in line between each spark output and the actual pin out. The db15 was designed for that. You'll want to run DIYautotune's QuadSpark, http://www.diyautotune.com/catalog/quadspark-four-channel-ignition-module-p-481.html, as it is the most robust and cost effective way to run either wasted spark or fully sequential. Wiring is pretty straightforward, you run +12V switched power to each coil (either terminal but keep it consistent from coil to coil) and the other terminal goes to the appropriate coil - wire on the Quadspark. The db15 spark outputs from the 3.57 board go to the appropriate trigger inputs on the Quadspark and then you tie all the blacks together from the Quadspark and bolt them back to the engine as ground (use a ring lug). The only confusing part is Spark A, B, C, D in fully sequential become cylinder 1, 3, 4, 2 or Spark A, B in wasted spark become cylinders 1,4 and 3,2. If wiring wasted spark just pair the inputs to the Quadspark 1,4 and 3,2 leaving all the other wiring the same. I am a distributor for DIY, I can quote you a price to make the mods to your megasquirt, supply the Quadsaprk and wire everything up correctly, PM me. Link to comment Share on other sites More sharing options...
scott87star Posted April 5, 2013 Report Share Posted April 5, 2013 Also, can I wire for 4 injectors and only use 2 until my manifold is done? Yes, just seal the unused ones up somehow as you'll have live power there. Each bank is wired in parallel with two injectors, not having one connected will not influence the other. Link to comment Share on other sites More sharing options...
Skullzaflare Posted April 5, 2013 Author Report Share Posted April 5, 2013 I have no issues soldering to surface mount, I just need to get a new needle iron, mine died, all I have is a coil iron. What would I need if I get 4 coils with built in ignitors? Or 2 dual coils with built in ignitors Link to comment Share on other sites More sharing options...
scott87star Posted April 6, 2013 Report Share Posted April 6, 2013 Quadspark does the same as the built in ignitors but the ex-megasquirt wiring is more complex in the built in ignitor example. Link to comment Share on other sites More sharing options...
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