The 'E' Type Forum

Again pardon my ignorance but doesn't this waste a lot of fuel? And if it cant fire the injectors individually wouldn't it be better to have a single throttle body injector per manifold? The "wastage" in fuel is of academic proportions. "All" fuel supplied goes through the engine and is combusted. ...

Clear as mud? :bigrin: For more technical information: http://www.megamanual.com/v22manual/minj.htm#pwm So how does one output control 6 individual injectors connected in parallel? Surely this just opens all 6 each time it fires? Correct. You can then choose to fire the banks alternating between be...

Megasquirt and its atrocious documentation will do that to you. Perhaps you mean "comprehensive" rather? I believe the MS documentation is astonishing! Amazingly comprehensive. But I concede that many "squirters" find it hard to find the info they are looking for because there is SO MUCH INFO on th...

abowie wrote: ↑

Tue Feb 11, 2020 7:50 am

My brain hurts...

Welcome to EFI....

EFI wil make your brain hurt if you attempt it yourself.

Some ECUs will just make it hurt more than others.

It is a fantastic learning experience though - if you are willing /keen to learn. Having excellent documentation and support is a prerequisite.

How does the MS2 handle 12 injectors? I will presume your question to be: "How does the MS2 handle 12 LOW IMPEDANCE injectors?" The short answer is: Comfortably. The medium answer is: 6 injectors per each of the two injector outputs using PWM and active flyback control to minimise current drawn by ...

Here is some good info on injectors:

http://www.megamanual.com/v22manual/minj.htm

Knocking:
http://www.megamanual.com/ms2/knock.htm

and here:
http://www.msextra.com/doc/pdf/html/MS3 ... e-1.5.html

With my 12.5:1 CR engine, I want to try closed loop (knock sensor) and adaptive control of sequential ignition timing. I have reservations about this idea. This approach simply aims to chase the maximum advance whilst limiting detonation. This is based on the assumption that max EFFICIENCY is alway...

The main consideration you should consider with such an upgrade is the ability to datalog results. kind regards Marek Marek has touched on an extremely important matter. The importance of data logging should not be underestimated. Along with that, excellent documentation and tech support goes witho...

I used a Megasquirt-2 (daughter board) on a megasquirt v3 motherboard built for low impedance injectors (std HE jag v12 Injectors). This is one of the "beauty" aspects of MS-2: Its ability to elegantly/efficiently drive low impedance injectors. The on board Manifold Pressure (MAP) sensor determines ...

I have fuel injected 3 Jag V12 engines(and numerous v8s) using Megasquirt-2. In all 3 cases I implemented ECU controlled ignition timing - which, IMO is the biggest "win" on any carburetted engine - bigger than fuel injection. This last statement was again proven when I implemented a Bluetooth 123Ig...

lowact wrote: ↑

Sat Feb 01, 2020 12:33 am

Injectors are the originals, Bosch 0280150164.

Are you using current limit resistors?

My Jag mechanic rebuilt my series 2 4.2 liter engine carburetors. The trouble with rebuilt carbs is that you can assume nothing, NOTHING. You can not assume that they have the correct parts, or even the same parts. Nothing can be taken for granted. Just this week I had many conversations with a fri...

"! They had a magnificent V12 but pretty crude carburation" Well, I don't know what the definition of "crude" is and I don't care. What I do know is that I have fuel injected 3 jag v12 engines (my own OTS etc) and more than 10 v8 engines and I salute our forefathers for what they achieved with their...

My take on S1 vs S3: 1. S1 no power steering. S3 has. This makes S3 a pleasure in town, but S1 direct feel wins on open road. 2. S1 has poorly turning radius. S3 much better. 3. S1 prices higher than S3 but steady, but it seems to me that S3 prices are gaining on the S1 - which could give the S3 a b...

I'm not at home to check my circuit diagram, so will answer from memory. The last position is "start" (this is to engage the starter to make the engine crankl). When the key is in the start position, 12V SHOULD ALSO BE PRESENT on all white wires (like when the key is in the "on" position) . The coil...

The xjs and dd6 had a very elaborate vacuum advance management system to meet emissions standards OF THE DAY. I can't be sure what this one was used for but I vaguely recall one being used to prevent vacuum advance from being active while the engine is still cold to make it warm up quicker and the o...

I don't see air bleed pipes from the thermostat housibgs to the header tank. Are they yet to be fitted?

Please disregard above comment. I became confused with efi t/stat housings and carbed housings.

MLBS3V12 wrote: ↑

Fri Dec 27, 2019 10:06 am

Last picture from the car

I don't see air bleed pipes from the thermostat housibgs to the header tank. Are they yet to be fitted?

It is indeed the simplest EFI implementation. Now your car will also have an efi wiring diagram which other efi cars are not likely to have.

Being std Jag, should not haunt you IF you sell the car (now how would I know that...)

MLBS3V12 wrote: ↑

Sat Dec 21, 2019 9:04 am

Hi all,
I've finally decided to place the EFI ECU on the passenger side in the car:

Exactly where I put mine.