HFS-3 with big fuel injecters

[Richard L]

I do not have any answers for you, I can only go by what you (your tuner) told me.

Put the other controller on this car and let me know.

[TJ]

Originally Posted by Richard L

You cannot do that, either IDC or MPS. not boith. Perhaps that is the problem.

Just confirmed with the tuner, both IDC and MPS are wired.

[TJ]

Originally Posted by Richard L

I do not have any answers for you, I can only go by what you (your tuner) told me.

Put the other controller on this car and let me know.

OK, will try that too.

[Richard L]

Originally Posted by TJ

Just confirmed with the tuner, both IDC and MPS are wired.

He did not read the instruction, it is "either...or"

[TJ]

Originally Posted by Richard L

He did not read the instruction, it is "either...or"

I guess I need to disconnect either one, will do it tomorrow.

[Richard L]

You don't have to disconnect, just remove on jumper link on the MPS slot on the HFS3 controller.

[TJ]

Originally Posted by Richard L

You don't have to disconnect, just remove on jumper link on the MPS slot on the HFS3 controller.

OK thanks for this. My tuner may have already removed that jumper link, will have a look.

And here is what he said when asked about if its the IDC or MPS that is wired:
"They are both wired. It may or may not use the MAP sensor for triggering unless the jumper is set to to use it, but I'm pretty sure it still affects how failsafes work, because if you turn the trigger to late and the car makes a lot of boost it will still trip the failsafe (although that could be related to something else). We've just been wiring it this way since the HFS-1 and we've never bothered wiring one without the MAP sensor to see if it makes a difference".
I hope that he can join us on this discussion.

[Richard L]

Your tuner is correct, wired both in in case you need it in the future.

The MPS will not affect the spray or fail safe unless:

1. You set MPS to trigger the system
2. Solder link the MPS pad on the underside of the circuit board. (70% IDC and 30% MSPS)

I cannot put it more clearer than above.

Are you going to respond to my post #5 so I can see the how HFS-3 is processing the IDC signal.

[TJ]

Originally Posted by TJ

Just confirmed with the tuner, both IDC and MPS are wired.

My apologies as the info that I have provided above is incomplete and perhaps misleading. My Tuner actually wired both but removed the jumper from the MPS, the system was running off the IDC only with the MPS kept as an alternative option.

[TJ]

Originally Posted by Richard L

Your tuner is correct, wired both in in case you need it in the future.

The MPS will not affect the spray or fail safe unless:

1. You set MPS to trigger the system
2. Solder link the MPS pad on the underside of the circuit board. (70% IDC and 30% MSPS)

I cannot put it more clearer than above.

Are you going to respond to my post #5 so I can see the how HFS-3 is processing the IDC signal.

Managed to look at the controller today and and as mentioned in the previous post the MPS was not connected. I removed the jumber from the IDC and jumped the MPS with it and went for a test drive. The system triggers earlier, around .8 bar at partial flow (half the led bars lit up) until around 1.5 bar then the flow maxed out. It was hard to be accurate due to traffic. There was no issue with failsafe.



Will respond to your post #5