Hi All

I'm considering going for the V3 Meqasquirt - What parts do I need; I already have fitted:

A CPS sensor in the block
EFI inlet Manifold
EFI head
EFI flywheel

Can you advise the parts I'm going to need and also what type of injectors I should use. Also, let me know if there are any parts/injectors you think I should steer clear of.

Hope to hear soon

 

I take it you're building it yourself rather than buy it from a tuner then?

It can be quite a bit to get your head around. The first bit of good news is you can retain all your existing ford temperature sensors - but you will need to program up the MS to their ranges as by default the MS is designed to run with GM Vaux. sensors. This is straightforward to do tho using something called "easytherm".

You'll need a throttle position sensor if you've not already got one.

For your injectors, so long as they fit the fuel rail I *think* you can use either high-impedance (i.e. most standard Ford) or low-impedance (i.e. Cossie) items with megasquirt - all you have to do is sort out how much fuel you need to deliver into your engine, go buy the injectors to suit and configure the megasquirt accordingly.

You'll need a lambda / HEGO sensor fitting if you don't already have one, so you'll need the provision for that in your exhaust manifold or downpipe.

That sorts most of the fuelling side out. Are you planning on using your MS to drive an EDIS ignition module and run a coilpack, or drive the coilpack directly, or are you retaining your standard distributor (assuming your particular RST has one - I'm a RST ignoramus!)? Each requires the MS building up slightly different ways IIRC but I could be a bit out there - been a while since I looked at the build instructions.

Not sure how it will react to the Escort CPS-on-the-flywheel setup though - I'd have thought it would be perfectly fine but I do remember a lot of the MS sites recommend finding a 36-1 toothed wheel like either off a 1.8 CVH Sierra or off a DOHC Sierra / Granada / Escort RS2000 crank - quite possibly because it's easier to fit a disc afterwards than bugger about changing the flywheel and drilling the hole for the CPS sensor in EXACTLY the right spot on the back of your block.

You also need to consider how you're going to drive your idle valve - you'll need to mod the megasquirt installation if you're using a two-wire hitachi-type valve like that used on the Sierra / Granada DOHC & Cosworth 24v's as the standard setup can't accommodate driving the load. It's easy enough to do tho.

There's a lot more to it than that, but I hope that's some help to get you started on the right track at least - I'm currently fitting MS v3 using the MSnS-E code to my 2.3 8v DOHC Sierra and am feeling things out as I go - which is "entertaining" - but I'm doing OK so far.....