Technical Megasquirt

[craigb244]

wooo glad you like it and picked it over other ecus.
have you looked at the MS extra firmwares?


£40 for tunerstudio! i paid $10!

 

[allanhelen]

yep $64 for registered versions of TS MS and MLV now but to be honest VE analyse live is worth that on it's own

There are a few other extra bits in my build as well specific for MX5's but as it stands it is more than capable for what I need right now

 

[randomizered]

Aye, still bargain of a price. There are betas out there on Phil's site if you fancy a play with them as well.

I paid about a fiver for MLV as I registered years ago, but for TS I paid a lot more as it was free before the stable release, and I bought it seperate.

They are both great pieces of software worth every penny. The omex software I played with before had SO many less features adn was not as well designed either.

Phil Tobin FTW

 

[craigb244]

to right they are worth every penny.
I also bough mine while it was still a beta.

but even of they cost £100 they would save you a lot more then that with the hours saved on the dyno

 

[Dan]

Quick question. How would you wire the Fans? Via the FIdle Seems the easiest way. I already have the fans set up from a relay and switch at the mo. Can i just bridge the connection on the relay board to send a signal from pin 30 directly to the FIdle terminal. Then from the Fidle terminal to the signal on the already mounted relay?

Then just set the FIdle in tunerstudios to desired on/off temps????

 

[craigb244]

yeh run it to the fidle relay. but first beef up the tracks on the relay board (scratch the coating off the tracks, tin them with solder then solder on some thick copper wire)

 

[Dan]

If i just use the Fidle terminal for the signal to the external relay thats already set up, it shouldnt need beefing up should it? it only needs a little juice to enable the relay?

 

[craigb244]

ah yeah.

Im using the fiddle relay on the relay board

 

[Dan]

Cool. Thank you. Yeah could have made my life alot easier if i'd thought about using the board relay, but never mind.

While i think about it, does anybody know where you can buy the MS relay board cases in the UK. Want a lid as it looks messy.

 

[craigb244]

maplins have them

by the way my fan settings are:
output channel.............threshold......hysteresis
Coolant ..............>..... 87.............. 1.0
AND
RPM.................. >.......500.............0.0

these settings make the fan come on a 87degrees and off once it drops to 86
also the fans wont run until the engine is over 500rpm (stops fans running when the engine is not running... saves killing the battery and gives more power to the starter motor if you restart the engine if its over the 87degrees... which it will be if you restart the engine 5mins after you turn it off due to heat soak)

 

[Dan]

Really!!!!!! :worship:

Didnt think about the RPM threshold. Very good advice. Thank you.

Off to maplins on friday then.

 

[randomizered]

The lid fouls the relays, so bear that in mind. They do some nice sealed units as well, probs better as my relay board only lasted a year. Maybe I got a dodgie one though?

 

[craigb244]

guess it depends on stock. the box I got it fitted perfectly. only a couple of mm taller then the relays.

I'm ditching my relay board when I fit the new engine. I found it to cause more issues then its worth.

kristian I don't think its just yours. they are a bit crap. I've has to replace a lot of they traces with wire.

 

[Dan]

No luck in Maplins or on their website.

Only thing i can find anything like it is this:

http://www.maplin.co.uk/waterproof-extruded-aluminium-electronic-instrument-enclosures-265983

There are a couple boxes that could be made to fit it, but i just want to find a lid that matches so i can make it fit. lol

 

[Dan]

Would bridging Pin 86 to pin 87 of where the relay on the relay board would have been just send the signal out of FIdle?

Also in tunerstudios with the settings, guessing i need it on 'enabled', but what about 'Power on value' and 'trigger value'. Both on 1?

 

[craigb244]

power on value is 0.
this is the value (on or off) when the ecu it turned on

trigger value is 1
this is the value you want the output to be when the conditions are met.

 

[Dan]

No luck. Relay was working via the switch fine, switched the ignition power from the switch to the MS. Get continuity from pin 30 of DB37 to FIdle terminal. It must carry enough current to switch on the relay if it can control a fan directly.

The Fidle doesnt work via negative triggering does it?

 

[randomizered]

Your fiddle wire will earth the line.

On the relay you'll have a thick 12V line and a thick earth. Then of the two thin one's, one goes to 12V and the other goes to the fiddle. This will them switch the earth, flow the 12v through the coil and energize the relay.

Hope you understood that

edit. Also if you'r not using the relay on the relay board for fiddle, bridge it like this:

 

[Dan]

Yeah understand how it works, but wasnt sure if it earthed the connection or sent a 12v signal to the relay. Should have guessed as i know the coils trigger from earthing. The problem i have now is that the way i have my external relay wired is awkward to make run via MS. Hmmm will have to have a think. Probably a better idea to use the original relay and just beef up the traces.

Dan

Edit: yeah have it bridged like that already. Im using a basic 4 pin relay that gets a 12v ignition, hence why it didnt work.

2nd Edit. Seems Easy enough after actually looking into how relays work. lol

To use a basic 4 wire relay i simply have pin 86 to the ECU and pin 85 to 12v ignition. Then pin 87 to battery with thick wire and Pin 30 to the fan + with thick wire. This means that when the ECU earths the magnet it bridges the connection to the fan. Simples when you know how.

 

[Dan]

Really quick one. Whats the easiest way to wire up the cinq sporting rev counter with MS2. Does it work from the negative wire on the coil pack?