The installation of the Greddy TT and the engine rebuild is done. i start the car with the stock ECU it runs OK no oil or fuel leaking but allot of black smoke because of the 750cc injectors as i think. The bad news is that i connect the EU but the car doesn't start at. I am sure that the harness are connected right there is no red light on the EU and i check the wiring 100 time. I don't know what is the problem.

This is how i connect them:
The Autosport harness.
12pin, 14pin and the 18pin harness of the EU with the Greddy Pressure sensor.
Injector ADD/TRIM.
ignition 6 Cylinder individual.
crank angle signal.
Water Temp Signal, Intake Temp Signal.
Hot-wire airflow meter, Flap type airflow meter without the rpm signal.
I couldn't find the Vehicle Speed Signal wiring. as i read its somewhere behind the A/C in the wight box with 3 harness in it, but i don't know witch one is M49.
For the EU setting i use these maps, air adjustment map, injector map1 and ignition map 1. fill up with zeros. PLEASE can anyone do something to help anything that will let the car to stat with the EU that i really hate now. i ask for a map before for the 750cc but nothing. if someone have it please mail it to me. mswayeh@gmail.com

Thank you.

 

It could be a bad EU, we fought one until we were going crazy and ended up having to send it back to Greddy.

But even then the EU has some real issues with resizing the injectors specially that large, the guy ended up reflashing the ECU for the injectors and using the EU to fine tune it, not the best unit for a built Z.

 

I installed the injector adapter mod that prevents injectors from going too rich when no adjustment is made.

Did you scale the EU for the new injectors?

Link to thread:
https://my350z.com/forum/showthread....highlight=rich

Edit (just saw this): Also, CUT THE WATER TEMP SIGNAL WIRE. You don't need it and it reads incorrectly, causing you to run too rich !!!!!!! You CANNOT just turn it off in the software, you MUST cut the wire.

 

Yes i have the adapter installed. But still the car can’t handle this much of fuel with the without a maps. So i installed the 440CC injectors that come with the TT kit. I run then with the EU it runs fine but you can feel that something is wrong. I remove the EU and give it a try with the stock ECU and the car runs perfect. I am driving the car for two days now everything seems to be OK. Planning to run the car for a 1000Km then install the EU back and tuned it.

 

OK i will cut the water temp wire.

What do you mean by scale the EU for the new injectors? This is all what I did for the Injector sitting shown is the attached pic.

 

That looks good (I think) ... now let me know how it goes after cutting the water temp

 

One thing I found was also that some of the wire colors did not match the manual and you had to go by pins, also I can't remember but there is something in there about not hooking up both the camshaft and crank signals

 

About the cam signal i read sharif ones say not to connect it because it will make a conflict with the crank signal or something like that. is that right?

 

I don't recall, but I think I have both sensors hooked up, don't remember

 

That sounds right.

 

i will run the EU with the crank and cam signal ones and with the crank signal only and see if there is any difference. I will let you know about it.

 

can any one post a pic on where to get the speed signal coz i wired it at harness m49 pin 26 but nothing. the turbo timer cant read any speed it stays 0 wile the car is running. Sharif has post them ones but the link of the pics are broken.

 

Sharif is the only one I know who has done it. Why do you need speed signal anyway. Who cares.

 

Well you have it right, it is M49 plug pin 26, just to make sure it is the third pin from the right on top row when looking at the back of the plug and it should be white. Also M49 is the shorter plug with 8 pins across on top and bottom.

 

Just to have all the features of the turbo timer.

 

OK, i will check it 2moro and see if i connected it right. Thanks.