N/A Megasquirt Thread

[nando]

there is no difference between an N/A MS and a turbo MS other than your VE and timing maps won't go above 100kpa. Well, some guys might have boost control or something set up, but that's an extra feature that doesn't affect you anyway.

if it helps here's a harness chart I created a few years ago. I update it when I find new information.

http://www.325ix.com/megasquirt/MS_to_Motronic/ms_to_motronic.html

[lifeiskaos]

You're on the right track. I've built over 20 plug and play MS kits for e30's, like this one:



Email me at lifeiskaos@gmail.com and I'd be happy to answer questions you've got. I've got tuned NA and turbo MSQ files too.

[Gruelius]

for motronic do this

http://wiki.diyefi.co.uk/index.php?title=BMW_E30_Megasquirt_%26_Wasted_Spark_Conversion

dont buy any of the boards just wire some stuff up yourself.

if you buy a MS II 3.57 all the stuff you need is there. The only negative is that its smd (better quality but harder to fix stuff if you slip with the iron when playing with it) and that it costs more.

when you order MS II 3.57 ask the guys at diyautotune to wire the outputs you need to the extra db15 connector (3 sparks, and the optional outputs.) A list of the options is here. http://www.msextra.com/doc/ms2extra/...htm#ms2options

Anyway this should be a more generic thread. There should be a megasquirt map thread for NA users and general quesitons asked in here.

also id have the megasquirt in its own case ontop of the motronic box with wires coming out of the motronic box. As you can see from the diyefi page its a bit of a squeeze to fit it in.

[e30rapidic]

ditto!

[NC325iC]

To start id like to ask a question.

I have been looking on DIY autotune, so far i havent contacted anyone there, at the necessary components to build the MS i want. My desired setup is to be able to tune fuel and spark, with the option open to run a wasted spark setup, fan control, and PWM idle control, all within the original motronic box. Looking at the site i believe i know what i need: a MS2 kit, motronic adapter board, fan control chip (transistor?), PWM mod kit, and in future the ignition driver.

I would like to have someone look at that and tell me if that seems correct, the only thing thats making me doubt it is looking into the DIYPNP section of that site they have a motronic 55 pin kit that uses microsquirt, this doesnt mean i have to use microsquirt to fit it in the kit does it?

[NC325iC]

I know that myself and others would benefit from having a thread where we could come and ask questions about Megasquirt for N/A engines in our cars. There is plenty of background for the FI guys but not so much for those of use with atmospheric pressure. I know there are people on this board with alot of useful information to give here, and i think putting it into one place would be helpful for everyone. (see DOHC thread)

Please if you have any tips/tricks/tables/maps/advice post it here.