Dual stage nitrous issue / questions

Oside Jimc · Post by **Oside Jimc** » Wed Apr 19, 2006 8:57 am

I'm implementing a dual stage nitrous system on my RSX and I think I have found an issue with the E20 output.
When I use E20 to control my 2nd stage the menu says gnd=on, however it appears the actual implementation is reversed. This output is always gnd, even when the nitrous is disarmed. By selecting "invert output" the function bahaves as I'd expect for gnd=on (i.e. only supplies current sink to activate relay when nitrous is armed and parameters are met)
I'm using kmanager 1.2.1.1, and I'm attatching my cal.

Questions:
When both nitrous 1 and nitrous 2 are active are values such as retard and fuel additive, or will 1 setting override the other?

Post by **Hondata** » Wed Apr 19, 2006 1:23 pm

The nitrous fuel and ignition changes are cumulative.

The nitrous output is correct - with a NPN output transistor it will show 0V always unless something is connected to pull the putput to 12V.

Oside Jimc · Post by **Oside Jimc** » Wed Apr 19, 2006 3:07 pm

Hondata wrote:The nitrous fuel and ignition changes are cumulative.

Thank-You very much.

Hondata wrote:The nitrous output is correct - with a NPN output transistor it will show 0V always unless something is connected to pull the putput to 12V.

What I noticed was my relay engaged as soon as I armed the system (+12 arming signal is also used to power relays), when I switched the output to inverted it bahaved just like E21. I also noted the same behavior on wdsonny's car, but he never followed-up.

Here's a schematic of what I have implemented.

Post by **Hondata** » Thu Apr 20, 2006 9:48 am

Update your software - your version of KManager is 4 versions old. Wire the arming switch so that it grounds to enable. The output settings should not need to be inverted.