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By TurboTapin · Posted
Yea I also was under this impression from various sources, but I figured it applied only to high speed I/O. I was not expecting any impact on such a slow input. Haltech should have an official statement of limitations or comm rates for these. -
I get that impression already from various youtube vids whenever the I/O expanders are discussed. MCM, for example. -
By funkymonkey · Posted
According to @acsplit apparently the forum is being migrated from one server to another so should be back up and running once the migration is done. -
By TurboTapin · Posted
I thought I would share a few fun facts about Haltech products that I've learnt with their use that they don't share on their website. Haltech GPS speed - Extremely slow to react. It's fine for puttering around but I have no idea what speed I'm driving when in WOT due to the slow response time. This was always going to be temporary as I need mechanical wheel speed for eventual torque management, but it has just been bumped up a priority or two as it's a nuisance. Haltech I/O Expander - You often hear the response time is slow due to canbus comms, but I could not find concrete evidence and Haltech makes no mention of it. We'll now I have it. I mentioned in an earlier post that I thought my WMI mechanical pressure switch was causing a delayed response from my AEM WMI Controller to my ECU. My WMI begins to operate at 11psi, but my ECU was only getting an "On" signal around 19psi. After removing the pressure switch, there was no change. Luckily I connected my WMI Controller directly to the ECU the morning of my Dyno tune and there was a large improvement. I get the "On" signal around 13-14psi now. These remote IO boxes should be marketed for only non-critical I/O.
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