Chiburbian's 01' Lots of potential, no follow-through build
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Joined: Feb 2008
Posts: 2,331
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From: Loganville, GA
Harness 2R to M27 IAC1B to JS1 - Check Engine
Harness 2K to M29 IAC2A (IAC2) to JS2 - A/C Switch
Harness 3C to M31 IAC2B to JS10 - Purge Control
Harness 2C to X4 Injector F Condensor Fan
Harness 2B to X7 Injector E Cooling Fan
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Thread Starter
Joined: Feb 2008
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From: Loganville, GA
Thanks y8s. Do I have to do this for every input or is there some extra inputs on the expander that I can use safely without doing this?
Also, brainiac, do you have any more of those alternator control boards left?
If I have to build the alternator circuit later on the proto area in addition to those input mods (what should I call them?) I am afraid I will be running out of room shortly.
Also, brainiac, do you have any more of those alternator control boards left?
If I have to build the alternator circuit later on the proto area in addition to those input mods (what should I call them?) I am afraid I will be running out of room shortly.
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Joined: Jun 2005
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From: Fake Virginia
You can indeed use the MS3X inputs. I copied the circuit for my input.
These are all fine:
Datalog In
Tableswitch In
Nitrous In (jumper installed)
Launch In
These are all fine:
Datalog In
Tableswitch In
Nitrous In (jumper installed)
Launch In
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Thread Starter
Joined: Feb 2008
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From: Loganville, GA
What is my prognosis doc?
I can look tonight. I might have 1 or two more. To make it properly work, you need to build an output circuit on JS0 or Js2 or alike to trigger the TIP125 on above 300RPM.
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Thread Starter
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From: Loganville, GA
I was hoping to keep datalog, tableswitch and launch... Was I supposed to use the conditioner(?) circuits for these as well?
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Thread Starter
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From: Loganville, GA
Re: Brain, datalog, launch etc
That is interesting. Every time I get a reply like that I see my project taking another two days to a week to get back on the road...
That is interesting. Every time I get a reply like that I see my project taking another two days to a week to get back on the road...
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Thread Starter
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From: Loganville, GA
putting this here so it's in multiple spots even though it wasn't aimed directly at me:
Dont even build circuits.
USE THE ******* EXPANDER BOARD THAT HAS:
Datalog In
Tableswitch In
Nitrous In
Launch In
already built to bring in the a/c switch.
AND:
INJ E
INJ F
INJ G
INJ H
Nitrous 1
Nitrous 2
Boost
Tacho
VVT
To activate the a/c compressor and a/c fan.
I mean, that's the reason you pay the $90 to buy the epxander board...so you don't have to build circuits.
USE THE ******* EXPANDER BOARD THAT HAS:
Datalog In
Tableswitch In
Nitrous In
Launch In
already built to bring in the a/c switch.
AND:
INJ E
INJ F
INJ G
INJ H
Nitrous 1
Nitrous 2
Boost
Tacho
VVT
To activate the a/c compressor and a/c fan.
I mean, that's the reason you pay the $90 to buy the epxander board...so you don't have to build circuits.
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Thread Starter
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From: Loganville, GA
Proposed uses:
INPUTS:
Gnd/12 switched
Datalog In - Datalog Switch
Tableswitch In - A/C Switch
Nitrous In (12v to trigger) - Vehicle Speed Sensor
Launch In - Launch In (clutch)
0-5v analogue
Flex Fuel In - Future Flex Fuel Sensor
SpareADC - Not used
EGO2 - Not used
EXT_MAP - Not Used
OUTPUTS
Logic Level (spark)
SPK A,B - Spark 1-4 (wasted spark for now
SPK C,D - Reserving for future sequential spark
SPK E - ?
SPK F - ?
SPK G - ?
SPK H - ?
High Current
INJ A-D - Fuel Injectors
INJ E - Cooling Fan
INJ F - Condenser Fan
INJ G - Purge Control
INJ H - VCTS Control
Medium Current
Nitrous 1 - Compressor Relay
Nitrous 2 - VVT
Boost - Boost Solenoid
Tacho - Tacho
VVT - Unused
Idle - Idle Valve
So far so good?
What other things can I use SPK E-H for in the future?
INPUTS:
Gnd/12 switched
Datalog In - Datalog Switch
Tableswitch In - A/C Switch
Nitrous In (12v to trigger) - Vehicle Speed Sensor
Launch In - Launch In (clutch)
0-5v analogue
Flex Fuel In - Future Flex Fuel Sensor
SpareADC - Not used
EGO2 - Not used
EXT_MAP - Not Used
OUTPUTS
Logic Level (spark)
SPK A,B - Spark 1-4 (wasted spark for now
SPK C,D - Reserving for future sequential spark
SPK E - ?
SPK F - ?
SPK G - ?
SPK H - ?
High Current
INJ A-D - Fuel Injectors
INJ E - Cooling Fan
INJ F - Condenser Fan
INJ G - Purge Control
INJ H - VCTS Control
Medium Current
Nitrous 1 - Compressor Relay
Nitrous 2 - VVT
Boost - Boost Solenoid
Tacho - Tacho
VVT - Unused
Idle - Idle Valve
So far so good?
What other things can I use SPK E-H for in the future?
Last edited by Chiburbian; May 11, 2013 at 02:38 PM.
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Thread Starter
Joined: Feb 2008
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From: Loganville, GA
Mother of #@$@!!
I just saw this thread: https://www.miataturbo.net/megasquir...-inside-70629/
I am guessing this means I should probably try and replace C16 while I have it apart as a preventative measure?
I have a Fry's Electronics on the way home from work, I can pick one up there I am pretty sure.
I just saw this thread: https://www.miataturbo.net/megasquir...-inside-70629/
I am guessing this means I should probably try and replace C16 while I have it apart as a preventative measure?
I have a Fry's Electronics on the way home from work, I can pick one up there I am pretty sure.
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not a bad idea, but just fwiw, I've only had 3 blow one me so far and I've probably built 30-40 MS3x units. so far, and probably closer to 300-350 units altogether.
a 22uF rated at 35V from digikey will run you close to $4 each.
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Thread Starter
Joined: Feb 2008
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From: Loganville, GA
To me it looks like cheap insurance.
Back to U4 for a minute... Since I am not using the injector drivers anymore, any reason I can't just leave U4 out and not worry about fixing or replacing those resistors/traces? I see Frank doesn't even install that stuff.
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Thread Starter
Joined: Feb 2008
Posts: 2,331
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From: Loganville, GA
Can you guys take a look at my proposed inputs and outputs above and either bless them or tell me where I am going to frak up?
Post 94
https://www.miataturbo.net/build-thr...5/#post1009569
As soon as my daughterboard arrives I will be burning it and hooking it all up. Working on wiring harness, spreadsheet, and msq to match as we speak.
Post 94
https://www.miataturbo.net/build-thr...5/#post1009569
As soon as my daughterboard arrives I will be burning it and hooking it all up. Working on wiring harness, spreadsheet, and msq to match as we speak.
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From: Fake Virginia
regarding the A/C input and fan outputs, they look fine.
purge control... not even sure it's worth it. I did it but forget if i enabled it.
other fuel outputs can be for stuff like IC sprayers or water injection or who knows.
purge control... not even sure it's worth it. I did it but forget if i enabled it.
other fuel outputs can be for stuff like IC sprayers or water injection or who knows.
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