Some of us are building, installing or thinking about Megasquirt. This thread, then, is intended for Cento and Sei (or at least FIRE) specific discussion/sharing, etc.
Technical Megasquirt
- Thread starter fingers99
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Technical Megasquirt
the trigger pattern used is 60-2. 58 teeth, two missing. megasquirt running ms:extra can handle this, there is no needed to convert it to use a 36-1 trigger wheel.
ms:extra can drive the standard coil packs, the ford EDIS module is not needed.
all of the standard sensors can be used with megasquirt, as long as you calibrate the temperature sensors correctly.
ms:extra can drive the standard coil packs, the ford EDIS module is not needed.
all of the standard sensors can be used with megasquirt, as long as you calibrate the temperature sensors correctly.
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Have you got you pre-soldered kit yet arc?
How much extra do you pay for a complete module rather than parts to assemble yourself.
I'm sure a few of us members on here can do assembly for other members for little ££. I have a degree in electronics and 3 years mobile phone repair experience (nokia level 3), and would be happy to build one or two kits for minimum wage.
Not looked closely but it can 't be more than a few hours soldering!
If there would be interest I'll check and revise what i wrote but thought I'd put an offer to the table
Kristian
How much extra do you pay for a complete module rather than parts to assemble yourself.
I'm sure a few of us members on here can do assembly for other members for little ££. I have a degree in electronics and 3 years mobile phone repair experience (nokia level 3), and would be happy to build one or two kits for minimum wage.
Not looked closely but it can 't be more than a few hours soldering!
If there would be interest I'll check and revise what i wrote but thought I'd put an offer to the table
Kristian
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Asteris
Member
MS-1 does not handle IAC idle stepper motor.
MS-2 does not handle 60-2 wheel and double coil packs (yet).
So, either we fit an old style PWM 3 pin idle valve on MS-1, or we use Extra code on MS-2, that handles double coil packs and 60-2 wheels but only on beta code for now.
I chose the second one, as the MS-2 is way much better on accuracy and will deal better the bigger injectors i intent to use.
MS-2 does not handle 60-2 wheel and double coil packs (yet).
So, either we fit an old style PWM 3 pin idle valve on MS-1, or we use Extra code on MS-2, that handles double coil packs and 60-2 wheels but only on beta code for now.
I chose the second one, as the MS-2 is way much better on accuracy and will deal better the bigger injectors i intent to use.
my will use MS1 version 3 PCB, with the MS:Extra firmware with all the options soldered on too. imo, thats the best way to do it.
The ms:extra code does not run on MS2, dunno where you got that from
http://megasquirt.sourceforge.net/extra/index.html
The ms:extra code does not run on MS2, dunno where you got that from
http://megasquirt.sourceforge.net/extra/index.html
Asteris
Member
MS-1 cannot handle IAC idle stepper motors (the 4 pin ones). What do you propose about that? Cold start, closed loop idling, A/C management, fan on/off, all of them are IAC dependent, so the car keeps a steady idle. MS-1 handles only 2 or 3 pin PWM old style idle valves, which cannot fit in our TB without modifications. So, MS-2 for me...
MS-2 Extra code is currently on beta testing, 60-2 wheel already tested up to 14.000 rpm on the bench, if i remember right. A couple of guys are already testing it on the road.
Check here: http://www.msextra.com/viewforum.php?f=91
MS-2 Extra code is currently on beta testing, 60-2 wheel already tested up to 14.000 rpm on the bench, if i remember right. A couple of guys are already testing it on the road.
Check here: http://www.msextra.com/viewforum.php?f=91
ballcocks, i overlooked that. T piece onto the brake servo line, non-return valve and boost control solenoid, let the air leak in through the back of the manifold instead. should work. ?
Where are you putting your ECU and where are you picking the power up from?
Cheers
D
Cheers
D
I have a relay board which will go where the existing ECU is, and then a bundle of cables will go through the bulkhead at the passenger side, and the actual ECU will be fitted in the passenger footwell, probably on the underside of the dashboard.
The power for the ECU will be a dedidcated, fused line ran back to the battery in the boot or dedicated fused line run from the main distribution box under the bonnet which is sat where the battery used to be.
For ignition switched lines, i plan to re-use the existing ECU's connections once i've cut the plug off.
The power for the ECU will be a dedidcated, fused line ran back to the battery in the boot or dedicated fused line run from the main distribution box under the bonnet which is sat where the battery used to be.
For ignition switched lines, i plan to re-use the existing ECU's connections once i've cut the plug off.
Asteris
Member
Yes it should work, it's a good idea. Where can we get such a valve from?
I prefer MS-2, because its a much faster processor (and i hope this helps passing emission test with the 250cc injectors), but now i realize it's not much of a cost to buy an MS-1 CPU (25 euro i think...) and experiment on it while waiting for the final MS-2 Extra code...
I'll also fit the MS under passenger's dashboard and run a cable to a box where the stock ECU was. The cables will be soldered inside this box, to a male 35-pin connector, taken from a damaged IAW-16F. Stock harness will plug directly on this connector.
Another option is to fit everything inside a bigger box, including the male 35-pin connector and place it where the stock ECU was. The MS is supposed to use automotive grade parts (up to 125 degrees C), so it won't be a problem.
ive been looking around on msefi.com, and spotted a few part numbers jotted around for the PWM idle valves. I need to relocate the vacuum hose take off anyway, so theres no reason why i cant add a feed for the ICV in there as well.
I wanted the ECU in the car so that i can connect the laptop to it whilst driving.
I wanted the ECU in the car so that i can connect the laptop to it whilst driving.
OP
OP
Give me a little notice and I'll take a sickie and stay in bed that day.
I am putting my Omex unit on the dashboard and am trying to match up all the relay requirements for fuel pumps etc at the moment.
Cheers
D
Cheers
D
Asteris
Member
Neither is the Omex, hence, its being bolted to the dash.
Cheers
D
Cheers
D
this is quite interesting, controlling a stepper idle valve using the PWM control output on a MS1.
http://www.msextra.com/viewtopic.php?t=18971
http://www.msextra.com/viewtopic.php?t=18971
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Re: Megasquirt iac v3
Ok its a Punto but at leasts its fire .
Megasquirt is residing next to my bed (saddo) and I'm busy reading.
Hi I'm Dave from the University of Fiat Forum and I'm reading Megasquirt - stay with me its been a long day.
Starting to check the wiring in preparation for plugging the soldering iron in.
This diagram
Clearly shows the stepper motor wired in in fact acording to this
quote
If you are using a stepper motor IAC with the relay board, and have connected the wires for the IAC to DB37 pins 25, 27, 29, and 31, then:
unquote
This states that an iac stepper can be directly controlled by v3
However, the schematic also shows a stepper connected to 20
God I feel thick
Plus
Many posts mention experimental iac control - is this in reference to v2.2?
What have I missed/am missing here.
This is the first of many dumb questions, those of an intellectual nature are iinvited to disengage their brain before reading - shame the warning is at the end :bang:
Ok its a Punto but at leasts its fire .
Megasquirt is residing next to my bed (saddo) and I'm busy reading.
Hi I'm Dave from the University of Fiat Forum and I'm reading Megasquirt - stay with me its been a long day.
Starting to check the wiring in preparation for plugging the soldering iron in.
This diagram
Clearly shows the stepper motor wired in in fact acording to this
quote
If you are using a stepper motor IAC with the relay board, and have connected the wires for the IAC to DB37 pins 25, 27, 29, and 31, then:
unquote
This states that an iac stepper can be directly controlled by v3
However, the schematic also shows a stepper connected to 20
God I feel thick
Plus
Many posts mention experimental iac control - is this in reference to v2.2?
What have I missed/am missing here.
This is the first of many dumb questions, those of an intellectual nature are iinvited to disengage their brain before reading - shame the warning is at the end :bang:
Re: Megasquirt iac v3
MS one cannot control a stepper motor idle control system.
i'm not sure why its shown connected like that, however it cannot work how its connected. the idle stepper motor would need 4 connections, not just that one.
MS one cannot control a stepper motor idle control system.
i'm not sure why its shown connected like that, however it cannot work how its connected. the idle stepper motor would need 4 connections, not just that one.
Asteris
Member
Re: Megasquirt iac v3
This diagram is showing wiring connections on a V3 board, including MS-2 connections for IAC motor (4 wires, blue & green on top left) and ignition module (pink wire at 36 pin).
If MS-1 is used, these pins stay disconnected. Use pin 30 to control a simple two-pin idle valve.
This diagram is showing wiring connections on a V3 board, including MS-2 connections for IAC motor (4 wires, blue & green on top left) and ignition module (pink wire at 36 pin).
If MS-1 is used, these pins stay disconnected. Use pin 30 to control a simple two-pin idle valve.
