PC-5 and AUTOTUNE (2) seperate boxes
So if I were to start off making a map for my PC V, could I enter 12:1 for the entire rpm range down as far as say... 5000 rpm. Or would I have to richen it up as I went down in rpm or lean it out?
Just to clarify:
The PC-5 and AUTOTUNE are (2) seperate units/boxes
1) The PC-5 is a programmable (by inserting +'s and -'s @ various R.P.M.s and throttle positions, let's say -10 @ 8000 r.p.m. would lean out your sled 10% of fuel at only 8000 r.p.m. but at all temps and elevations at that throttle position) that requires a knowledgeable guy (Like DYNOTECH JIM) running the same /similar combo as your sled to first "build" a map and then for you to "tweak" it from there. The program when you open it up on your computer looks like a "spreadsheet with "cells" that you can input the +'s and -'s into. You CANNOT input A/F #'s into a PC-5. The PC-5 will work on your sled WITHOUT the AUTOTUNE.
2) The AUTOTUNE is a seperate "box" that comes with a BOSCH O2 sensor that gets installed into your pipe and the box itself allows you to enter a desired A/F #'s such as 12:1. Afte that the AUTOTUNE AUTOMATICALLY ADDS AND SUBTRACTS FUEL BASED ON O-2 sensor info and the A/F# you selected . Like a mini-dynomometer on your sled, that continues to "build and perfect" a map as you drive down the trail. This eliminates the need for you to "build" a map as the Autotune essentially does that for you. YOU NEED TO HAVE/BUY A PC-5 IN ORDER TO ATTACH/USE THE AUTOTUNE OPTION
You can only input a desired A/F mix ONLY if you have the AUTOTUNE Option piggybacked onto the PC-5
In summary, if you spend the $365.00 for the PC-5 PLUS $250.00 for the AUTOTUNE=$615.00 total+ weld the o-2 fitting into your pipe, set it at 12:1 or 12.5:1 and than it's plug and play!
Just for reference, the FST's w/WEBER motors have the equivalent of the above set-up on their engines since 2006, plus they even have timing management taking into account engine temp, air temp, etc.
Hope this helps