on maps, what does the N across the top mean and the P going down the side?

 

what?

compressor maps?

Look in the FAQ at the top

 

fuel and ign maps

 

Depending on which "maps" you're looking at:

Fuel maps- One side will be rpm and the other will be load (map). The numbers within the boxes are usually fuel pulse widths in milliseconds, but sometimes they could be a number value.

Ignition maps. Same side as fuel will be rpms, and the other will be load (map). The numbers in the boxes will be in degrees before TDC.

And no, I'm not an ecu person.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EH-3 &raquo;</TD></TR><TR><TD CLASS="quote">on maps, what does the N across the top mean and the P going down the side?</TD></TR></TABLE>

what kind of system are we talking about? if it's Hondata, Crome, or Uberdata then what stealthmode said is correct. The upper portion is load (vacuum/boost) and on the left side you have RPM's. A few of the more expensive standalones have it different though. For example the Autronic has RPM's along the top, and on the left it has percentages of load.

https://honda-tech.com/zerothread?id=939555

 

hes talking about the Power FC.

P=vaccum/boost (load)
N=rpm

With the Power FC, RPM reads from left to right (top) while vaccum/boost reads from top to bottom (side).

If you have the FC datalogit software you can view them as thier actual values.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by STD ONEpointSIX &raquo;</TD></TR><TR><TD CLASS="quote">hes talking about the Power FC.

P=vaccum/boost (load)
N=rpm

With the Power FC, RPM reads from left to right (top) while vaccum/boost reads from top to bottom (side).

If you have the FC datalogit software you can view them as thier actual values.</TD></TR></TABLE>

ohh that's right, I forgot about how the PFC refers to rpm and load as P1, N8, etc.

I have a PFC manual from when I was gonna get one for my RX-7. IIRC the numbers in the cells is a percentage of the the original numbers in the basemap (part of the map you can adjust with PowerExcel or FCLogit). So that means in the basemap if the injector duty cycle is 80% for say 5000 RPM's and 10 psi, then on the commander if it says 1.0 in that cell then your IDC would be 80%. But if you wanted to increase your duty cycle from 80% to 85% you have to put 1.0625 in the cell (85/80 = 1.0625). And on the other hand if you wanted to go from the 80% to 70% duty cycle you would have to put 0.875 in the cell (70/80 = 0.875).

I believe that's how the PFC is adjusted. When I first got it it was a little confusing at first, but eventually it started to make sense.

 

thanks guys.