Oh crap dude, you're not supposed to be doing that!

Haltech recommends you wire their fuel pump replay directly to the battery and to the fuel pump.
You have two thick red wires - one goes to the fuel pump, the other directly to the battery.


-Ted

 

Yup done that way now!

 

I've got the engine running and this time it doesn't die after a few seconds. What I did was wire in a 3.5k resistor in series with the Home signal wire, and the same for the Trigger signal wire. Plus wrap some metal foil around the wires in the cabin to combat any interference. These resistors attenuated the Home and Trigger signals to a level that the E11v2 could handle without any problems. I set the Home and Trigger Gain's to 0, and hey presto the engine fired up and I held it at 1500-2000rpm for a couple of minutes.

I datalogged this and looked at the Home and Trigger Counter values. They were climbing as I expected but did not increment as 1,2,3,4... more like 4,16,28... (ie. with big gaps). I guess the 'logging' of Home and Trigger values isn't that accurate! They are sampled at a low rate, and not every 0.01secs as the rest of the stuff like 'injection time' is. But if you see RPM spikes (ie. odd values in between normal RPMs) like I did, then you know something is wrong with the Home and Trigger signals.

It has taken one hell of a long time to get the E11v2 up and running properly. Haltech (AUS) support has been patchy and they don't answer emails if you ask a question that they don't like. Now I hoping that I won't have any more seroius problems when I tune the car with wideband!

 

Wow, where did you get this suggestion from?
It sounds like a valuable tip!


-Ted

 

Haltech, gave me that suggestion as well when I was having Trigger issues.

 

I had the idea to add the resistors myself! I saw what happened when I adjusted the Trigger and Home Gains from 0 to 1,2 (ie. terrible distortion of Home/Trigger Counts) so I thought I'd try reducing the Gains with resistors.

I started with 10K resistors, but this was too much, as I had to set the Gain to 1 to compensate. Then I searched around this forum for "resistor" and found an old post about Haltech telling a customer to add 1K resistors to Home and Trigger signal wires. Bingo!