EFIDynoTuning Forum

Just curious what others do when they find mistakes in the strategy document(LHBH1).

As an example, in the "Ignition Timing Strategy, Base Spark", the following calibration constants are listed:
- FN151(ECT) = Octane Table (FN1122) multiplier vs. ECT.
- FN152(ACT) = Octane Table (FN1122) multiplier vs. ACT.

Then,
- FN1150 = Spark octane multiplier of FN1122(N,MAP); inputs are FN051(ECT) and FN052(ACT).

There is no other mention of FNx51 or FNx52 in the document.

Is this a mistake in the document, are there only 2 functions, or are there actually 4 functions?

If it is a mistake, should it be FN151 or FN051?

I dont see the mistake??

multipliers are different functions from normalizers

Maybe I'm reading it incorrectly.

So, FN151 and FN152 are multipliers.
And, FN051 and FN052 are normalizers.

Is that correct?

Or is FN151(ECT) the output of FN051(ECT) ?

correct

fn151 is a multiplier modifier function, look at RZASA FN724A is its sister function.

fn051 is a scaling normalizer. In RZASA look at FN2220, instead of the x and y axis being fn013 and fn017 they are fn050 and fn051.

I don't know any other way to explain it.

I'll have a look at RZASA.
Your explanation helps.

I believe FN151 and FN152 are 'orphans' left over in the document from previous strategies that did not have FN1150.

sailorbob wrote: ↑2021 Jul 29, 06:02 I believe FN151 and FN152 are 'orphans' left over in the document from previous strategies that did not have FN1150.

That's it!, and hence why I cannot find those functions in my bin disassembly!

Thank you sailorbob.

You can find FN151 and FN152 in the strategy that the B9Z calibration uses.