Injector Pulse Width Resolution 16 bit or 8 bit

[Mark Boxsell]

At 12:06 PM 23/02/96, you wrote:
>Hello diy_efi'ers
>
>How many bits should be stored in the lookup table for a injector
>pulse width map?  Should I use 8 bits or 16 bits?  I know 16 is
>better, but is it necessary?
>
>Yours,
>--
>Derrick Early
>early at finite.nrl.navy.mil
>

If you are using big injectors (eg. turbo,etc) and/or chasing emissions then
I recommend 16 bit.
An easy check it have the engine idling with an exhaust gas analyser
connected. Change the pulse width by your minimum increment and measure the
difference.
If you are idling at 2.00% CO and it changes to 3.00% CO then you know you
are in trouble !!

                        regards,
                                        Mark Boxsell
                                        MRB Design.

ps. Don't laugh I have seen it happen.