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Old 02-09-2014, 07:28 PM   #16
apbellamy
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From what I've read megasquirt is very good if you are happy to experiment and modify, but it has it's limitations. It sounds as though you need something that will work out of the box relatively easily.
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Old 02-09-2014, 08:07 PM   #17
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From what I've read megasquirt is very good if you are happy to experiment and modify, but it has it's limitations. It sounds as though you need something that will work out of the box relatively easily.
Have the 2 Andy's clicked on the link? Its a plug and play MX5 megasquirt

paul
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Old 02-09-2014, 08:44 PM   #18
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I have now. The thing is they are not plug and play. They have base maps on for 1.8/1.6 engines. This will be far from ideal for your 250bhp turboed lump. Map sensor will need to be changed (I'm assuming you are going to run plenty of boost). The ignition map will put you straight into detination and the fuelling will be a million miles out.

I've got the S.C. plug and play jobbie on my A series. Same situation as you, none standard engine plus boost. It takes it far away from plug and play.

I know you don't get on with wires but an engine loom from scratch isn't that difficult
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seat mounting should not be taken lightly, nor should a rat trying to get up your trouser leg doing 50,m,p,h, all of a suden your nUts become more important,
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Old 02-09-2014, 08:55 PM   #19
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I have now. The thing is they are not plug and play. They have base maps on for 1.8/1.6 engines. This will be far from ideal for your 250bhp turboed lump. Map sensor will need to be changed (I'm assuming you are going to run plenty of boost). The ignition map will put you straight into detination and the fuelling will be a million miles out.

I've got the S.C. plug and play jobbie on my A series. Same situation as you, none standard engine plus boost. It takes it far away from plug and play.

I know you don't get on with wires but an engine loom from scratch isn't that difficult
I didnt expect to unplug the oem one and stick the megasquirt one in and have no mapping session done.

as for the wiring stuff im past my phobia. I did the full full DTA loom from scratch on the Suzuki swift engined one so that doesnt phase me.

I better sign up on the megasquirt forum
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Old 02-09-2014, 09:04 PM   #20
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Have the 2 Andy's clicked on the link? Its a plug and play MX5 megasquirt

paul
Erm ....... nope.
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Old 03-09-2014, 05:36 AM   #21
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Old 03-09-2014, 07:00 AM   #22
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Glad it helped! Other people opinions will differ... but I'd stay away from megasquirt. Real ECU's are worth the money.

I cant understand why you would sell your S40 (PRO?), which is more than capable of running a 4 cylinder turbo.

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Old 03-09-2014, 11:38 AM   #23
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Glad it helped! Other people opinions will differ... but I'd stay away from megasquirt. Real ECU's are worth the money.

I cant understand why you would sell your S40 (PRO?), which is more than capable of running a 4 cylinder turbo.
I've never been 100% happy with the DTA the support you get with it is pineapple. Lots more tuners are coming round to megasquirt now Inc the guy that does mine. It would mean I don't have to build another loom as well.

Paul
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Old 03-09-2014, 12:19 PM   #24
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Plenty of other options, like omex or MBE that would be better than megasquirt. But I would stick with the DTA. Very good ECU, definitely worth building a loom for. You would have to add wires for a megasquirt anyway for map / boost solenoid.

It will run your engine, but so would a carb. Its not just a matter of looking at the functionality and pins in and out of an ECU which everyone seems to do. You will get your drivability from good interpolation algorithms in the software, map resolutions, processor power, crank sensor algorithms etc.

BTCC and world rally X cars don't run 3k Pectel SQ6M's just for the brand name. You do get what you pay for with ECU's.

Anyway, lol, I'll stop.
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Old 03-09-2014, 07:03 PM   #25
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Plenty of other options, like omex or MBE that would be better than megasquirt. But I would stick with the DTA. Very good ECU, definitely worth building a loom for. You would have to add wires for a megasquirt anyway for map / boost solenoid.

It will run your engine, but so would a carb. Its not just a matter of looking at the functionality and pins in and out of an ECU which everyone seems to do. You will get your drivability from good interpolation algorithms in the software, map resolutions, processor power, crank sensor algorithms etc.

BTCC and world rally X cars don't run 3k Pectel SQ6M's just for the brand name. You do get what you pay for with ECU's.

Anyway, lol, I'll stop.
Alex your first post was helpful You've now lost me with all the tech talk i'm afraid. There isn't any point in dropping the brand name of a BTCC and WRC ECU into the conversation as i can't afford Omex or MBE. This isn't a cheque book build and i need to sell things to make the beginning of the project happen. I will also have to work a lot of over time to pay for the things i want.

Paul
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Old 03-09-2014, 07:12 PM   #26
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Paul
Also have a look at the VEMS ECU. Might be a possibilty for your application.

I know Sprocket over on Turbominis uses it and is very impressed for the cost.
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Old 03-09-2014, 07:29 PM   #27
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Paul
Also have a look at the VEMS ECU. Might be a possibilty for your application.

I know Sprocket over on Turbominis uses it and is very impressed for the cost.
Just don't say VEMS near the megasquirt fan boys...
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seat mounting should not be taken lightly, nor should a rat trying to get up your trouser leg doing 50,m,p,h, all of a suden your nUts become more important,
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Old 04-09-2014, 06:06 PM   #28
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I've checked with the guy at EFI extra and he supplies a small loom to add to the mx5 one for turbo applications eg: boost solenoid.

Paul
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Old 04-09-2014, 06:30 PM   #29
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I will also have to work a lot of over time to pay for the things i want.

Paul
I know how that feels
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Old 05-09-2014, 09:40 AM   #30
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Stripping the car down over this weekend. I'll take photos of the parts and update this thread. I will also sort postage quotes for those that asked

Paul
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