Management Systems

WooHaa · Post by **WooHaa** » Tue Sep 19, 2006 4:35 pm

Okay, let's start this debate.

I want to fit a management system. the problem is that there is so many out there & everybody claims to be the best.

I thought of MrTurbo as there I can plug in my Laptop & load various FuelMaps.

I Also thought of Ram Mapping where they keep your existing fuel maps & just add more.

I thought..of....& the list goes on. What are your guys thoughts on this. Someone said Unichip is da best...

Daniel · Post by **Daniel** » Tue Sep 19, 2006 5:12 pm

ok, im no expert (wel obviously

) but can you even do Ram mapping on our ECU's ?? dont you need ODB2 for that?

Im sure a Unichip is alright. but has limited functionality compared to even the local managemant solutions.

Dicktator is the only 1 iv'e ever seen advertise for the SX, but im sure most if not all can work. So far id have no problems going with Gotek, Mr Turbo, Dicktator or any1 of the main local brands. Price is obviously a factor and no local systems seem to cator for electronic boost control where the international (and outragiously expensive) ones do.

As a side note, I have a EEPROM programmer and some software to make the changes. Can more than likely still get the chip in the ECU and I have a very BASIC understanding of the settings.

I.E: theoretically i can program my own maps and whatever and plug it directly into the ECU inplace of the old 1

lemme post up what i know so far, maby some of you have some ideas. Obviously im too scared to make changes plug it in and see what happens. Perhaps once i get down to doing some decent research.

Chip Type : CA18DET ECU uses 27128A chip

(27) EEPROM Type
128 EEPROM Size 16kb x 8
A ????

Need the widths.

Sections

Address = Offset in binary file
Siz = Size or #bytes of data
Fac = Factor x = times, -reduce
Info = Information

Address Siz Fac Info

0x3690 16 x1 TP Limit (AF Limit)

Word Data

Boost Cut

0x3700 256 x1 Low Octane Fuel Map

0x3970 8 x1 Acceleration increase volume

0x392C 1 x2 Speed Limit (kph?)

0x3980 1 x50 Rev Limiter 1 7200 (90)

0x3981 1 x50 Rev Limiter 2 7000 (8C)

0x3982 1 x50 Rev Limiter 3 7200

0x3983 1 x50 Rev Limiter 4 7000

Pairs must be the same i think ( 0x3980 and 0x3982 ) and ( 0x3981 and 0x3983 )

0x3990 16 x1 Add Map 1 (Variable air close)

0x39A0 16 x1 Add Map 2 (Variable air open)

0x3A00 256 -22 Low Octane ignition map

e.g. 0x24 top left of table is 36 dec less 22 = 14 Degrees at idle to 400 rpm ?????

0x3BC0 16 x1 Fuel TP scale

0x3BD0 16 x50 Fuel RPM scale

0x3BE0 16 x1 Iginition time TP scale

0x3BF0 16 x50 Iginition time RPM scale

0x3C00 256 -22 High Octane ignition map

0x3D00 256 x1 High Octane Fuel Map

0x3E18 104 x1 VQ Map

Word data?

0x3F40 16 x1 TTP MAX/MIN

Total Theoretical Pulse Width Min/Max
48 48 48 48 50 50 58 58 b3 b3 b3 b3 b3 9a 9a 9a <--- thats the data

0x3F80 2 x1 Required K Number

Injector Value. Multiplaction factor for setting the pulse width of the injectors.

0x3F8F 1 x1 Void blast off time

Injector latency, time For an injector To open And close.

WooHaa · Post by **WooHaa** » Wed Sep 20, 2006 7:42 am

Damn! That's amazing. This sounds like what ChipLogic does. they access the existing chip & make changes. Maybe there are settings on the internet one can find that allows for better fueling & higher boost etc,etc.

Will the ecu allow you to make these changes? I would think Nissan Lock the ECU some how....Just a guess

Daniel · Post by **Daniel** » Wed Sep 20, 2006 7:59 am

you would burn it on a new chip and take nissans one out

you take out the ecu:

open it up:

take out that board:

Tada, there she is

WooHaa · Post by **WooHaa** » Wed Sep 20, 2006 8:39 am

I think more research is needed into this. If we can get the settings I would be willing to take out my chip & burn the new one on.............hhhmmm

Freddie, just let me know how much you want for your ecu

just in case.....

Draco · Post by **Draco** » Wed Sep 20, 2006 8:42 am

Here is my opinion, I have a unichip, you can map it just as good as an management system, the problem is you are also limited, it will cover a bigger scope of mapping, that will give you the same as an management system, but as I said it's olso limited where an management system covers an even bigger scope of mapping which you can alter yourself with a laptop for racing eg.

Pros unichip:
cost less to fit R1400+-
for the normal guy on street that needs perfotmance.
Generally lighter on fuel...(not mine)
Caters for all fuel/air needs.
faster to fit.

Cons of unichip:
limited in terms of racing
for the normal guy other than Daniel it is hard to remap.

Pros of Management:
Wider scope and can do it yourself
For the racer if need be
kicks out all extra coils, meters and stuff that generally gives you an headace.

Cons of management:
Costs more +- R4000 to buy and install
generally heavy on fuel
can scrue up if the right people don't do it
takes longer to install

Toby · Post by **Toby** » Wed Sep 20, 2006 8:44 am

I have a ROM editor for the standard ECU if you want - you can make your own map! Just unsolder the original EEPROM, solder in a socket, then you have the option of using an EEPROM emulator via a laptop (which allows you to remap on the fly), or else just program the EEPROM and stick it in. Anyone interested in the details?

WooHaa · Post by **WooHaa** » Wed Sep 20, 2006 8:51 am

I'd be interested. I like the "plug the laptop & edit on the fly" idea.
What do I have to do?

Toby · Post by **Toby** » Wed Sep 20, 2006 8:52 am

Here you go:

http://www.boostcruising.com/silvia/eprom.asp

Daniel · Post by **Daniel** » Wed Sep 20, 2006 9:17 am

Now thats an interesting page

if my car was working id be all excited and start working on this again

WooHaa · Post by **WooHaa** » Wed Sep 20, 2006 11:10 am

Yo daniel. Be excited & maybe you can use my car for it.

Daniel · Post by **Daniel** » Wed Sep 20, 2006 11:36 am

has anybody tried that rom editor? firewall stops me downloading it at work so i cant check. but i have a sweet one specifically for the CA18det ecu. works great with the bin file, shows maps, most things are simple enough. just wondered if it was the same one

WooHaa · Post by **WooHaa** » Wed Sep 20, 2006 11:40 am

Damn. You lost me at rom editor.

Toby · Post by **Toby** » Wed Sep 20, 2006 1:13 pm

Yea I played around with it and it looks good, though I never actually downloaded the ROM into my ECU. It's very funny though, 'cos the menus are all translated into English from Japanese, so to load an address file, you click the menu that says: "Are crowded as reading address file" heheheh

But the 3d view is great - kinda works like the laptop in the first fast & furious

If anyone wants to mess around with it, I have enough electronics knowledge to help you screw up your ECU

And I can program EEPROMS. I could even try to build an EPROM emulator for a laptop.

Here's what it looks like:

Some info on how to use it:
http://www.sr20forum.com/archive/index. ... 65087.html

And great info here:
http://www.sr20tuning.com/theoryandpartsrequired.html

Draco · Post by **Draco** » Wed Sep 20, 2006 1:39 pm

Your scaring me Toby, your the guy thats been kidnapping the ECU's and raping them, aren't you