Author Topic: Stock Ecu For Turbo Use (Read 11742 times)

Chris_XIII · « **Reply #15 on:** September 21, 2008, 05:03:20 AM »

Quote from: ose30;56927

Does it make any difference? It's Bosch Motronic systems DME box

I can check out later to day, have one extra box somewhere. Most likely there is written Motronic if i can remember correctly, but i suppose you need the Bosch part number ?

hey Mike,
Chris is from Creece, so give him a chance, after all most likely he writes better Greek than me and you

yes I knew, many things I write may have not the correct form... Ose30 is right

. I didn't knew that DME was Bosch Motronic systems. I thought that they had difference..
Soon I will present you my project

ose30 · « **Reply #16 on:** September 22, 2008, 02:41:48 AM »

Here's my extra box:

Quote

yes I knew, many things I write may have not the correct form

I would rather write in Finnish

Chris_XIII · « **Reply #17 on:** September 23, 2008, 09:10:07 AM »

I have the other one writting DME

sumyungguy · « **Reply #18 on:** September 23, 2008, 10:51:01 AM »

750cc's are way big for the low boost your talking about, 450's are plenty for up to the 12-14psi range.

Chris_XIII · « **Reply #19 on:** September 23, 2008, 11:38:44 AM »

I want 300-380hp so car will work over 14psi

ose30 · « **Reply #20 on:** September 23, 2008, 02:44:54 PM »

Quote

I have the other one writting DME

Yes it's just a normal Motronic. It is also called as Digital Motoren Elektronik = DME

strypt · « **Reply #21 on:** September 24, 2008, 02:42:07 AM »

Are the RC 750 cc injectors high impedance? If not then you will have to modify the harness and add one extra resistor per injector to make them high impedance otherwise you cannot use them with the Motronic box.
I'd recommend a stand alone ECU 24/7, if you go with Megasquirt it doesn't have to be that expensive.

ose30 · « **Reply #22 on:** September 24, 2008, 07:17:36 AM »

Most Motronic systems use only two wires / 4 injectors (at Motronic DME box), so only two resistors are needed.

Chris_XIII · « **Reply #23 on:** September 24, 2008, 07:42:29 AM »

Quote from: strypt;57278

Are the RC 750 cc injectors high impedance

Do you mean if RC injectors have hight resistance?? if you mean this RC prodact injectors with low resistance 2.5 / 3 OHMS and same with hight resistance Approx. 12 - 16 OHMS. This is a part of the project that I hadn't think... thanks;)

318kid · « **Reply #24 on:** September 24, 2008, 09:26:05 PM »

Would you have to do anything if you ran like 5 to 6 psi? I don't think DASC did? May be wrong though

nuvolarossa · « **Reply #25 on:** September 25, 2008, 04:05:04 AM »

Quote from: 318kid;57313

Would you have to do anything if you ran like 5 to 6 psi? I don't think DASC did? May be wrong though

DASC uses a rising rate fuel pressure regulator, so it raise the fuel pressure of stock fuel rail with stock injectors to a value near 90-100psi at max boost, from the 43,5 psi of stock FMU.
There isn't a way to add more air to the engine without adding fuel with it. If you don't do this you'll blow the engine, as it will be a lot lean, detonation will occur and bye bye to your pistons and the other parts....

Chris_XIII · « **Reply #26 on:** September 26, 2008, 12:44:44 AM »

Quote from: strypt;57278

I'd recommend a stand alone ECU 24/7, if you go with Megasquirt it doesn't have to be that expensive.

Can someone tell me some more things about this Megasquirt ecu? is it so good?
Megasquirt or Perfectpower is better?

ose30 · « **Reply #27 on:** September 26, 2008, 02:13:47 AM »

Depends what you are looking for. Perfectpowers SMT6/SMT7 are piggyback type of devices which just alters the signals delivered to Motronic.

Megasquirt is like Linux, it's an open system which can be developed/changed by it's endusers. If you like to have another hobby, get Megasquirt, it's never just plug 'n' play to use Megasquirt, Vems or similar standalone ECU's. It will take some time to get it work properly, of course standalone systems will give you more possibilities to tune up your car, but in the most cases piggy back devices will do the job.

Chris_XIII · « **Reply #28 on:** September 26, 2008, 02:31:43 AM »

Quote from: ose30;57399

of course standalone systems will give you more possibilities to tune up your car, but in the most cases piggy back devices will do the job.

yes, this is the reason why I'm thinking now a standalone ecu...