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Q&A > General Tech Advice > Megasquirt - a story of injection > Community Forums > Mustang Forum Australia - Mustang Tech

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Shaunp
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This is it

www.summitracing.com/i.../overview/


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hybrid
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Actually according to the Autometer site it's 0-4v.
Not sure if that's a typo or not.

I could just be that it doesn't have the range of a normal 0-5v unit, or it might need a custom setting. Shouldn't matter anyway, if it's linear output it will be fine.


Last edited by hybrid on Mon May 15, 2017 2:35 pm; edited 1 time in total

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boofhead
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A custom configuration is possible to make it match up correctly.

You do need to be mindful of the grounding scheme of the AFR gauge as well.
Good gauges have two grounds; one for the heater circuit and the other for the sensor wire. The sensor ground needs to be ground on the MS3 - see diagram.


I will someday think of something clever to say.

Last edited by boofhead on Mon May 15, 2017 4:36 pm; edited 1 time in total

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boofhead
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Decided to look at the manual - all good has both grounds also the sensor wire provides a linear 0-4 volts output. 0 volts out equals 10.0 Air/Fuel Ratio, 4 volts out equals 17.0 Air/Fuel Ratio. This will be easy to set up.


I will someday think of something clever to say.

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hybrid
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Yep Thumbs Up

Edit: just checked the old mans config. All good, support is built-in:



Last edited by hybrid on Fri Jul 07, 2017 10:19 am; edited 2 times in total

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Shaunp
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So I got some prices for new Bosch injectors from my mate Rick through his supplier. Bosch whites $65 and greens $70. I've read that whites should be ok to 500hp. Rick tells me they a supercharged v6 Holden injector. What do we reckon?


Last edited by Shaunp on Tue May 16, 2017 9:09 am; edited 1 time in total

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hybrid
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Hi Shaun,
in one of my threads you'll see logs showing the whites struggle on my engine - duty cycle into the 90's. I don't know what my engine power is though. They were OK before supercharging.
You can have my old set of 8 for a few hundred if you like. They were reconditioned/flow tested within 2% when I bought them a year or so ago.

Having said that - if you're going to buy new, I would personally pay the extra $40 to go green (AKA Green Giants) for the extra headroom.
They aren't big enough to cause idle issues.


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Shaunp
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Just found a calculator on the web that suggests the white would be marginal @ 80% duty & 43 lb rail pressure with a target hp of 470


Last edited by Shaunp on Tue May 16, 2017 9:29 am; edited 1 time in total

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hybrid
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80% duty is OK.
Ideally you want no more than 85%, but 90% is "acceptable" - just no headroom.
Mine in the pic below when I got them:


If you want, you can have mine and try them. Do some logging and see what they look like. If you're happy, send me some coin, otherwise send them back.


Last edited by hybrid on Fri Jul 07, 2017 10:15 am; edited 1 time in total

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Shaunp
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Thanks for the offer , it's going to a while before I can try them . Wouldn't want you to be out of pocket


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hybrid
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Up to you - they're just sitting there, so not out of pocket.
I had no plans to put them on ebay or anything at this point.


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Shaunp
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Ok as long as you don't mind me sitting on them for a bit.


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Husky65
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An alternative is the Ford Racing bosch EV14 47lb injectors off the coyote motor. It what I am going to use for the supercharger. You can get a genuine brand new set for around $360 aud delivered.
Ford racing has all the flow rates, slopes, etc also, so easy to input into your ecu.
www.ebay.com.au/itm/310970645144


Last edited by Husky65 on Tue May 16, 2017 3:22 pm; edited 2 times in total

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hybrid
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They are high impedance, so would do the job as long as they are the regular length and o-ring size.


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boofhead
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I think the whites will be ok but no head room.
Get it started and see where it ends up.
Nice of you Hybrid.


I will someday think of something clever to say.

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