Borderline spark load axis change

[Yortt]

This is from a 2009 F6 which goes to a load of 2.0 can anyone tell me why cell 3 is missing and cell 11 is duplicated.
I am looking at upgrading my current tune which only goes to 1.70.
Thanks

[Chris@HPTuners]

the PCM interpolates the values in between, so in this case 3 would be 0.6. There's no real reason why they would calibrate it this way, just how the Ford guy decided to do it on the day I guess...

[JETURBO]

How do you know what load "actual" values your currently seeing ?

[mycomputeratesme]

How do you know what load "actual" values your currently seeing ?

Pretty obvious isn't it?

[Yortt]

the PCM interpolates the values in between, so in this case 3 would be 0.6. There's no real reason why they would calibrate it this way, just how the Ford guy decided to do it on the day I guess...

Chris , thanks for the reply, I understand the interpolation, it just seems illogical to skip cell 3 which interpolation will cover fine (with some reduction in resolution) but then double up on cell 11 which results in a loss of resolution and has no apparent value.

[hiddeous]

Chris , it just seems illogical + has no apparent value.

This will come up quite a bit when looking at the Stock Ford Tunes.

[IH8TOADS]

What is the strategy or Tate tag / code? I will look it up in my SCT database. I have never seen a load line duplicated in a strategy.

[Yortt]

F6 tune is HAEDJG4 2009.............................................. ............. Duplicated
My car HAEDAR8 2008.............................................. ..............Not Duplicated
The tune in my car (maps copied accross) from HAEK2ME 2012 ....Not Duplicated

It appears only the F6 is duplicated. This tune was downloaded off the VCM suite tune download site.

[IH8TOADS]

F6 tune is HAEDJG4 2009.............................................. ............. Duplicated
My car HAEDAR8 2008.............................................. ..............Not Duplicated
The tune in my car (maps copied accross) from HAEK2ME 2012 ....Not Duplicated

It appears only the F6 is duplicated. This tune was downloaded off the VCM suite tune download site.

HAEDJG4 stock file is not duplicated.

[Yortt]

HAEDJG4 stock file is not duplicated.

Hmmm! interesting, any chance I can get a copy of the tune file you have?

[IH8TOADS]

I don't have it in HPT format sorry. PM me if you have an xcal as there is a potentially a way.

[turbotrana]

So what load axis points are people rescaling to for their spark maps at higher boost levels. I am looking at doing some new spark maps and just interested in seeing what others are doing.
I am thinking of
0.13
0.15
0.25
0.40
0.60
0.80
1.00
1.30
1.70
2.00
2.20
2.40

[JETURBO]

2.4 wont happen

[turbotrana]

so what will happen?

[JETURBO]

Yr 10 logic

[hiddeous]

Also keen to hear why 2.4 wont happen?

[JETURBO]

Because titty sprinkles

Iirc only goes to 2.27 does it not ?

[hiddeous]

Yri

14.68 * 2.5 (Bar MAP) = max load pf 2.5, with a boost range to aprox 20psi

Tony, what boost pressure do you intend to run? IMHO it's worthwhile setting the top load point to your max boost pressure for the sake of resolution.

[turbotrana]

Just running 20psi on 98. Once you go past 20psi is there a need to change timing much? At 2.4 the timing is at around the 8,9,10 degrees thruout the rev range (on 98)and I wouldn't think you have the need to go much lower even at 25lb 30lb (Say running E85) but don't know cause never done.

[hiddeous]

TMAP is maxed at 20psi anyway anything above that will reference the highest load line.