Injector selection

[vinkev]

Can somebody tell me which one I should select in the injector software for Denso Injectors. They are Red 850 cc with 14 ohms resistance. At the moment I selected the Bosch L late EG 901 The car is Subaru Impreza STI 1999 with PNP SMD v 1.99 ECU. I appreciate if someone can help.

Thanks
Vince

[MRMRacing]

I do not know but the 901 would do the job, do you have any Denso number?

[vinkev]

Thanks for answering me. I bought the injectors from Powerenterprise. The part Number of the injectors is 18-DHS3-850EJ1 and the Injector Name is SH850FA.

[MRMRacing]

Do not know any further but they have a lagtime of 0,85 mS so 901 would be fine.

[vinkev]

Thanks again. I have another question which I would like to ask please. Can someone explain how to upload from the Laptop to the ECU ?
Thanks

[MRMRacing]

This is basic question and are well covered in the manual.

FileCal MenuOpen cal file

Open a previously saved calibration.If online to an ECU at the time of opening you will overwrite the existing program in the PC memory and temporarily in the ECU. You will be prompted with "overwrite existing calibration" when doing this. When the program is loaded press F4 to permanently store the program in the ECU.· With the file window open press "CTRL" key for possible options.So if you are online just open cal file and it uploads to ECU, you must store it in ECU with F4 to be permanent.

[vinkev]

Since I made the 850cc injectors on a Subaru Impreza STI 1999 when I try to lean it more than 12.5 AFR the idling goes up and down. Can somebody tell me why this is happening. About the Open Loop Table should I make it Enable or Disable??

[Chris]

Have a look in Menu 2 (M2) at "injection end angle" Adjust end angle for smoothest idle.

It is often possible to achieve smoothest idle with two different settings. What I do in this situation is crack the throttle and see which setting gives smoothest acceleration.

Open loop table should be enabled and must be enabled if you plan to use autotune.

Chris

[MRMRacing]

Since I made the 850cc injectors on a Subaru Impreza STI 1999 when I try to lean it more than 12.5 AFR the idling goes up and down. Can somebody tell me why this is happening This could be several things, settings for idle ignition if used, settings of IAC if used, how the fuel table is set.
About the Open Loop Table should I make it Enable or Disable?? The open loop should be enable to take advance of Autronic fuel strategy. In newer Sm4 this option is removed since it is on the hole time.

[vinkev]

Chris this is the injector end angle setting that I have :
Load Engine Speed
2000 3000
100.0 354 270
Do you suggest any different settings. The Cam shafts are standard. The Inlet opens 9 BTDC and close at 53 ABDC .

[Wout]

If you only put other injector in and made the good setting for this injectors and you cant get the car back to leaner A/F ratio i would suggest that some injector would not flow good .

Your injector end angle issent the problem .

If you could post or send your cal file i could see if there are setting wrong .

Wouter

[Ian]

If the injectors are divided spray check that the orientation is correct. Some injectors for Subarus have the spray orientation turned 90 deg to fit whichever fuel rail has the injector plugs facing front-rear rather than left-right. If the spray pattern is orientated around by 90deg the intake runner roof and base get the fuel spray instead of the valves.

If they are single spray injectors (I think they might be) then the divider gets the spray which can cause the fuel to come out of atomisation meaning the idle in particular will not be good.

[Xenin]

What Injectors type i must be set fo RC Enginering PL4-1000D on SM4