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Nitrous outputs: Some general questions

Posted: Sat Aug 23, 2008 1:22 am
by Razathorn
First off -- as I'm sure hondata and others are aware, my nitrous/methanol wiring has been working for years. I just an curious about a few things that have had me thinking lately. When you disconnect an existing emissions output, such as VSV, and re-use it for activating a relay, what prevents the previous emissions code in the ecu from activating that output for its previously intended purpose? I was just thinking how unfortunate it would be if nitrous or water/meth was activated when it wasn't supposed to be. Until I ran into a code, I had left my obdII enabled with the water/meth activation hooked to VSV. I am thinking potentially running a calibration with OBDII enabled or the nitrous panel not enabled might result in unintentional activation of my methanol system.

I also noticed, since using PSP as my arming input, that the position of my arming switch affects idle as well -- so even though I am using PSP as a nitrous input, its old purpose still seems to be trying to be used by the ecu.

Some clarification in this area would be greatly appreciated.


Posted: Mon Aug 25, 2008 7:34 am
by Hondata
When outputs are utilized for nitrous they are disconnected from the previous function.

Posted: Fri Aug 29, 2008 5:16 am
by Bflaker
I was curious about this too when I was installing my nitrous setup. Thanks for the clarification.