150 replies to this topic

[rik]

I've been building up to this project for quite some time and have got pretty much all the parts, so I made a start..

new hole in manifold for the megasquirt IA temp sensor. You can use the standard temp sensors but have to calibrate them which I didn't fancy doing really, so I got the proven megasquirt sensors. Drilled and tapped to to 3/8" NPT (quite a weird thread but picked up a tap easily enough)



Same for coolant temp sensor (picked up a spare thermostat housing)



Manifold, charger, ecu, loom and charge cooler piping all removed (going to replace the nasty clear pipes at the same time)



this is what you're left with.. only 22 pins, of which i think I only need to reuse 14. The rest will be connected straight into the ms



relocated relays & fuses.. I hate having these in the boot so finally moved them

Edited by rik, 22 July 2009 - 01:54 PM.

[rik]

weber/alpha trigger wheel
Notice the TDC marker at 11 o'clock, the red tooth at 6 o'clock (aligns with sensor), and the missing tooth at 9 o'clock.
this means that the missing tooth happens 90 degrees in advance of TDC

http://www.megamanua...m/ms2/wheel.htm

trigger wheel teeth (m) = 36
missing teeth (n) = 1
skip teeth = 18
delay teeth = 8

[_Dan_]

For what it's worth, calibrating temp sensors etc on the MegaSquirt is a piece of p*ss (should you ever need to do it), I run one on my kit car........

[slindborg]

yeah you can use "any" temp sensors with the calibration tool What have you done about throttle control? Did you build the MS unit yourself? I made one about 3-4 years ago and still not got round to refining the design as there are lots of places to improve the hardware for less cost and most appropriate kit also want to have a stab at writing some code for it when I get a chance.

[rik]

thanks for the reassurance on the standard sensors, I will have to give them a go at a later point when it's all running.
The MS sensors:

[rik]

What have you done about throttle control?

I have made a controller for it using a pic chip and h-bridge of mosfets, so I am using the standard pedal and tb. Will post details soon.

Did you build the MS unit yourself? I made one about 3-4 years ago and still not got round to refining the design as there are lots of places to improve the hardware for less cost and most appropriate kit also want to have a stab at writing some code for it when I get a chance.

nope, I got it from www.extraefi.co.uk

[_Dan_]

I have made a controller for it using a pic chip and h-bridge of mosfets, so I am using the standard pedal and tb. Will post details soon.

At the risk of sounding a tad geeky, Cool! Please post details when you get it up and running!

[SteveA]

Any chance you could make the photos a bit bigger, it's hard to see whats going on at an atomic level that is Good work tho mate

Edited by SteveA, 24 July 2009 - 09:18 AM.

[rik]

lol wish i could edit my posts to show the 800x image instead but it won't let me

[slindborg]

ahh yes the driver you were on about ages ago top work. Beat me to it as I have no spare time anymore Seems like a cunning plan chap. well done

[The Batman]

Seems like a cunning plan chap. well done

do i detect positive feedback?

quick someone call 999!!!!

[slindborg]

Seems like a cunning plan chap. well done

do i detect positive feedback?

quick someone call 999!!!!

always positive for home brew solutions to stick it to the "tuners"

[The Batman]

when you get some time make me a ecu and wiring harness so i can 'stick it to the tuners'

[slindborg]

when you get some time make me a ecu and wiring harness so i can 'stick it to the tuners'

I have one in the loft just needs a loom

[The Batman]

send it to me and i will do the loom can be a combined sticking

[rik]

Tidied up my chargecooler piping no end





EGR finally good for something

[rik]

started on the wiring. Temp sensors, grounding points, +12v for the ms are the easy ones..



the coil pack is a bit fiddle. Throw away the ecu that's mounted on top (as seen with the weber alpha conversion)
There's actually a connector in here that you can use..



just pull it out with a screw driver





secured the wires in with hot glue (can be undone if needed). And i'll probably seal the edges of the connector with silicone when it's running so no water gets in, and then make a ally cover to make it look nice

[rik]

serial connection working, and temp sensors showing real temperatures!



oh and here's the actual ecu

[Boombang]

Going to be keeping an eye on this one. Know so many people who've tried Megasquirt and given up far into the project and gone for an off the shelf ECU. Be nice to see a few more people getting it working and happy with it. Good luck!

[rik]

when you get some time make me a ecu and wiring harness so i can 'stick it to the tuners'

if I were to make up some looms (assuming all this will work ), would a lot of people be interested? and at what price?
I guess pretty much the same loom is required for ms/emerald/dta/mbe etc..

Edited by rik, 27 July 2009 - 10:24 AM.