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Old 03-07-2013, 10:10 AM
naviuk naviuk is offline
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Join Date: Feb 2013
Location: South Africa
Posts: 21
Default Re: Help with HFS-3 and MPS Trigger

Quote:
Originally Posted by Richard L View Post
The system appears to be working properly. I like to clarify a few things:

1. When you use the FDC jumper to show IDC%, the "S" will be overrided.
2. You large injector means you are running low IDC%. the system will inject less.

Question 1: What is your maximum fuel IDC%?
Question 2: What are the jet sizes are you using?
Question 3: What map sensor will you be using? factory or 4-bar?

I need these information before I can help you further.
Hey Richard

Ok Cool, makes sense.

Just wanted to check one thing, so if you use the FDC jumper, instead of seeing flow on the gauge you will see the actual IDC while running the system? if so thats awesome to do test runs with!

Answers.

1. At Current boost aiming for 1.1 bar I have seen a max of 51% IDC, at the 0.8bar i was achieving last night this would have been at about 32% max. i can do testing on higher boost, but wont go above 1.1 for now. i have a wastegate issue, new Tial is on the way.
My aim is a Daily driver Pump fuel 1.1bar, so max IDC I expect there is around 50%
My highboost will be 1.4bar. i would expect to see about 80%+ on that.

From my understanding i will need to scale the bars using the SC trimmer?

2. The Jet i had on last night is the black ringed one, if memory serves me it is the 1mm jet (the biggest in the pack) i will do some testing later on using two jets versus one as i have tapped two holes onto the intercooler, there is no real hard and fast rule as to what works with pre or post intercooler or using a combination. but i will only do this once i have the system working properly with one jet.

3. I would like to use the 4Bar aftermarket one, i had originally started with this one, i swapped it back to the original to rule out a sensor being the issue. i can put the 4bar back and amend the scaling in the ECU and retest the voltage.

The red and green wires for the injector have us alittle confused. would it be possible to explain these? from my understanding on the injectors. there is a common wire - in the subaru seems to be common negative and a signal wire. the common wire leads back to the ecu and all 4 injectors use this. then each injector goes to it;s own separate wire on the ecu. in my case the Blue wire leads back to it;s own pinout and the red wire leads back to a common point.

Thanks again!!

Last edited by naviuk; 03-07-2013 at 10:21 AM.
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