After having a quick flick thru the Megasquirt topic, Stu has refered to quite a bit of hardware that is needed, and some of it essential, for when he is mapping a car - wether it be a YB with the potential for 500 horsepower, or an XE with the potential for some major normally aspirated power.

Now i'm well aware of the differences in mapping NA and Blown engines, but what hardware is needed to do the job fully and get it right, so that the engine performs at its best, within its mechanical limits, while being safe thru-out all engine speeds and load conditions.

Lets have a discussion

 

This seems a quiet one Gracy

I will prepare one of my essays for anyone interested in this topic, as i need to finish one for my website anyway, so this will kick my ass into gear.

In the meantime, discuss people....

 

quiet indeed Stu - maybe the lure of the pub was too much for some of our resident knowlege hunters

 

lm1.... data logger.... det cans

 

Ok,
As most of you will know, when mapping an aftermarket ecu such as Omex, Dta, Autronic, all you need is a laptop to interface the ecu and adjust the maps, as this type of ecu has been designed from the outset to be mapped live, and mapped easily.

OEM stuff as fitted to cars when you buy them are a little more complex, these units are designed to run one engine as the purchaser requests and once mapped, the program is stored inside an EPROM or Processor and access to it is not made available to non OEM's.

So how do we go about it?

Well, first of all, you need to get at the rom Chip, these vary in size nowadays from the antique old 8k 27C64 Cosworth chip to a Modern 8megabyte 229F800. here are pictures of teh 2 side by side with a 5pence and a pen for comparison...

chips.. old Vs new:


Once we have unplugged or unsoldered the eprom containing the run maps, we can then interface with the ecu and apply hardware into the ecu in place of teh chip, that will read and write the information required by the ecu in REAL TIME. Thats why we call it LIVE mapping.. the hardware EMULATES teh Eprom, and its name, is, unsurprisingly, an EMULATOR. Pics....

Connecting to ecu where the eprom used to sit.


The Emulator. Ours is 16bit with 2ms access time:


Ok, once we are hooked into the ecu with an Emulator, a decent system will have a twin map emulation backup unit. What does this do? Well, imagine cruising up Brunters at 210MPH and your laptop battery went flat whilst running the engine?! Ok, so it would be nice if we had something in place that went between the laptop and the emulator that would feed the emulator and ecu with all important information no matter waht happens yeah? Thats the Backup unit!! Pics..

Emu Backup System:


So.. now what?
Well, we need a source of power for all this dont we? Some is powered preferably by AC....

DC - AC Convertor:


And some by DC:


Of course, the DC - AC convertor also requires a high capacity and stable power supply:

Snap on DC.


Ok, the main hardware is in and we have it powered.. what are we missing now? Well.. we need of course to add a laptop with suitable software to be able to access the maps...



Some Det cans:


Not to mention teh bloody wiring they entail.. lol


Once that lot is in the car, you can hook it all together with this bloody big box of wires:


Wire up and ready your chosen fuel monitor and bost gauge:


Or smoke monitor if its a TurboDiesel:


Load up some software into teh laptop capable of feeding the ecu with live streaming ecu run software:




And you are finally, after approx 1 - 1.5hrs, ready to live map your engine management ECU.





The pictures above show what is needed to do a Marelli or Ford EEC Ecu live, theres nothing missing, you need it all or youcant do it, so i hope you lot appreciate the trouble we go to just to change a little bit of software within your OEM Ecu and why we charge what initially may seem a lot of money to some. Other management needs a few extra items, but thats a topic for another forum i expect...

Anyone interested in reading further about the actual mapping itself, should read here: https://passionford.com/forum/viewtopic.php?t=93911

 

is it me or doe kenny look like hes about to take them head phones off and say

" would you pack it in pal, ive got a fooking test next week "

 

that chip is tiny!

you ever been pulled over by the police when live mapping?

"what with all the computers in your car sir!?" lol

 

I am not that knowlegable but I have had some rr training and a RR is help full with a wide band lambada.

I was told that most tunners using det cans just retart 6 deg with a det noise.

I was not sure about the comment


discuss

 

 

that zietronic kit ive advertised in gen is what i use to see visual and log oh and sum bin ladin det cans pmsl


cheers jay

 

someone's had a beer

 

yes i have there more concerned about the bright orange ear muffs im wearing

 

me nah sober as a judge just cabbaged jim


cheers jay

 

for Gracie

 

Stu, how much are those emulators, and do u need one for different types of management, or does it do all eeprom based maps?

 

Excellant readup Stu - that has answered all of my questions and more to boot too

this thread is very worthy of putting in the technical essay forum, very very informative

 

Stu, daft question!

Do you ever test your emu back up unit to make sure it is actually working? Nothing worse than having a back up system to find it doesn't work at the worst possible moment!!

 

 

Yes, i was there when it got tested.....

 

Varies according to your intended use. Cheap ones can be had for as little as Ł500 but dont expect to be doing anything more impressive than an old Cosworth with em. Mine was around Ł6k IIRC, but of course, the Emulator is useless without all the software that goes with it and you can add the same again for Software, and thats before you get involved in other kit needed to do more than a few Fords.

All in all, i reckon our total hardware mapping package, including AFR, datalogging and Cans stands us around Ł30K.

 

What are the emulators intended use? Is it a generic eprom emulator, used in any situation where u'd want to emulate an eprom, or are they designed for the tuning/car industry? Also, who writes the software? Again is this intended for a specific use, or more general?

 

i know what most people use for cossies are just normal eprom copyers/emulators, normally a dataman s2

 

I dont know what other Emulators and software are available other than teh ones for Automotive use, so i cant really answer your question with Authority Rick, sorry.

My own kit is specifically written, designed, and built to run 2 totally seperate roms at once, in real time.

 

eprom? what's an eprom?

 

Gareth t,

The dataman haven't heard of the s2, only s4, and it is just a eprom
copier, to copy chips(eprom) also mass copiers available, 448pro.

Dave R.

 

it might be an s4,, been a long time since ive played with one and it can emulate

edit,,, i was wrong its an s4,, i should know i got one in work


hes emulating a rom here

 

gareth is right but ur missing stus point theres thousands of pounds of software needed

 

an eprom is and electorinically programmable ROM... (read only memory)

Its basically like flash memory but much older.

Alex

 

gareth thats the new version chap

 

you sure about that?

 

ya it is,, there is also an S3

 

fight!!!!

 

yeh nearly brought one off ebay till i got quoted 3.5k just for the webber software

 

Erasable Programmable Read Only Memory

well I was close...

 

Blimey, what software was that Jay?

By comparison, the Pectel IEMS software people still use is free on the internet and fits on a floppy disk

 

he must be downloading it using orange GPRS

 

stu its a company called gwaso in italy offered a 2k training coarse for 2 days pmsl

 

up front lol

 

I would be interested in any information you have on this Jay, may be worth buying pal

 

http://www.giwasa.com/electroniques/logiciels_gb.htm



there u go bud