Megasquirt - RusEFI

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paulsv8manta
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Megasquirt - RusEFI

Post by paulsv8manta » Thu Sep 12, 2019 8:21 pm

Hi guys

I’m looking for some guidance, I’m currently running a 3.5 flapper with a 4cu ecu it has a 3.9 cam with flowed heads and I’ve decided to change the ecu as I know it won’t cope with the next engine upgrade, which is a Thor inlet conversion then I have an Eaton m90 supercharger to go on.

So I have a choice of either Mega-squirt (3?) or the Rusefi system, I like the idea of the coil on plug (COP) option although I’m not sure about not having a cam sensor. Do I need one or is there a work around?

I’m new to all this and have tried to read up on the options but it just leaves me further confused! What would be ideal is, if there was a flow chart guiding you to what options you have going a particular route.

There seems to be a number of companies out there that deals with these systems but does anybody have a recommendation to which company to deal with?
Cheers Paul



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scudderfish
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Re: Megasquirt - RusEFI

Post by scudderfish » Thu Sep 12, 2019 8:40 pm

Speak to Phil at www.extraefi.co.uk He'll sort you out with what you need.

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David

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stevieturbo
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Re: Megasquirt - RusEFI

Post by stevieturbo » Thu Sep 12, 2019 11:55 pm

COP on a Rover would be difficult, CNP, Coil Near Plug should be quite easy.

Any decent ecu will have no difficulty with this, and no you would not need a cam sensor. But if you can acquire a phase signal...certainly no harm in doing so where systems can offer full and proper sequential injection.
But a phase trigger from an existing dizzy is easy and already there.
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garrycol
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Re: Megasquirt - RusEFI

Post by garrycol » Fri Sep 13, 2019 12:42 am

Be careful if you choose the Megasquirt system - if you go MS3 (sequential injection) you will need a cam sensor but earlier versions do not. Documentation is absolutely horrible but being in the UK you can help so my recommendation would be to get an earlier version MS that is already assembled - google Megasquirt for V8s and get one of their early kits.

However - what is wrong with using your 14CUX ECU - it will work fine and is simple. If you want to get rid of your dizzy you can get a trigger wheel etc to go on the crank pulley and run edis 8 with mega jolt to provide spark - works well.

paulsv8manta
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Re: Megasquirt - RusEFI

Post by paulsv8manta » Fri Sep 13, 2019 6:48 am

Hi thanks for all your comments guys much appreciated, thanks scudderfish I’ll contact Phil at extraefi today. Stevieturbo any reason why COP would be difficult I thought that would be the easiest with the least space or is it the wiring? Thanks for the info on the phase trigger. Garrycol, unfortunately I don’t have the 14cux ecu, I’m using Rovers very first ecu the 4cu really ancient!

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Re: Megasquirt - RusEFI

Post by garrycol » Fri Sep 13, 2019 7:12 am

paulsv8manta wrote:
Fri Sep 13, 2019 6:48 am
Garrycol, unfortunately I don’t have the 14cux ecu, I’m using Rovers very first ecu the 4cu really ancient!
They are cheap and easy to find second hand - later can be remapped if needed.

On a Rover V8 is was basically only the Thor engines (Gems as well?) that had a cam sensor - to put one into an older RV8 you will need a different camshaft, the relavant cog that bolts to it and probably the later timing cover without a dizzy drive - you change one thing and a few more change.

However may understanding that batch firing the injectors like the 3.9 engine with the 14CUX ECU does - the cam sensor is not needed.

Garry

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Re: Megasquirt - RusEFI

Post by DaveEFI » Fri Sep 13, 2019 9:10 am

MS3 can be bought without the X card which gives you the 8 drivers for sequential injection etc. I doubt many would go for sequential injection while retaining dizzy ignition, so you can use a modified redundant dizzy to provide the cam signal.

Don't think COP would be a good idea on an RV8 due to them being so close to exhaust heat . Coil near plug (LS1 etc coils) is the usual way.

MS1 which seems to be the choice of one UK supplier is obsolete. Although there are still stocks. But there is no software development for that. I didn't even consider it when I went MS some 10 years ago.

MS is the most common DIY system by far, so you're more likely to get help from other MS users if needed simply by the numbers. The MS forum is excellent for help and James Murry who writes the software is a contributor, as well as many other experts. You can get things straight from the horses mouth there.

If you don't intend to DIY, there are lots of alternatives to MS. That choice might be best made by the installer you choose, as there's not a great deal to choose between any.

The supplier with the best info on site is likely DIYautotune in the US. You can import direct from them if you want to - but you'll pay import duty. So do the sums. About £80 extra for carriage and duty on an MS3

There is a lot to learn with any after market injection system. But it can be very satisfying.
Last edited by DaveEFI on Fri Sep 13, 2019 5:13 pm, edited 1 time in total.
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stevieturbo
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Re: Megasquirt - RusEFI

Post by stevieturbo » Fri Sep 13, 2019 2:12 pm

The simple practicality of having to mount coils on top of the plugs and bracket them, would make it extremely difficult on any engine like this.

They're ideally suited to inline engines where the plug is recessed down the middle ( usually multivalve engines ). Definitely not suited to most other types of engine though.

Mounting a small coil near each plug with a short lead on the other hand is usually very easy
9.85 @ 144.75mph
202mph standing mile
http://www.youtube.com/watch?v=XgWRCDtiTQ0

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Re: Megasquirt - RusEFI

Post by DaveEFI » Fri Sep 13, 2019 5:12 pm

You could of course use EDIS coils if wasted spark is OK. Inexpensive and work well.
Dave
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MegaSquirt2 V3
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