New Parameter added - Aircharge Multiplier

[Eric@HPTuners]

Just finished adding an Aircharge Multiplier to all of the 2011+ definitions. On every car I have looked at, this multiplier is set to 1, with the exception of the Boss 302 calibrations, and the Roush supercharged Mustang files. That is why I decided to add this parameter.

In the past, tuning a blown 2011+ Mustang has always been easiest starting from a Roush calibration. I always assumed there was some parameter I couldn't see before, and I think this it. Both the Load at WOT (not in other tuning software) and Aircharge Multiplier are raised up, and this can probably explain some of the weird issues you may run across starting from a factory calibration when adding boost.

First image is an N/A vehicle



Second image is a boosted vehicle

[codename Bil Doe]

Did I send you the red and silver keys for the Boss?

[Eric@HPTuners]

Did I send you the red and silver keys for the Boss?

I have track key reads already.

[Blazin72]

Why would it be different with the Boss 302?

[Eric@HPTuners]

Why would it be different with the Boss 302?

Beats me.

[schaid]

I was looking over some tunes I had ripped from my car. I found one of my na tunes had various settings in this multiplier.

3500 - 1.00
4000 - 1.05
4750 - 1.15
5500 - 1.10
7000 - 1.10

The modifications at the time were Boss IM, JLT CAI, BBK LTH, Cat-less x pipe. Those are what were requiring tune. I've looked over other various sections of the tune and the rest of it seems to "make sense" but when Eric said that this is typically used for boost applications and he had only seen these set to 1.00 across, I figured I'd bring this back up. Why would this be changed? Anyone with some idea's as to why this would have been changed? I get that they are the boss values...but both stock gt and cobra jet share the 1.00 value and boss is set to the values I listed. The reason this is got me asking questions is I've got a line on a boss longblock.

[Eric@HPTuners]

I was looking over some tunes I had ripped from my car. I found one of my na tunes had various settings in this multiplier.

3500 - 1.00
4000 - 1.05
4750 - 1.15
5500 - 1.10
7000 - 1.10

The modifications at the time were Boss IM, JLT CAI, BBK LTH, Cat-less x pipe. Those are what were requiring tune. I've looked over other various sections of the tune and the rest of it seems to "make sense" but when Eric said that this is typically used for boost applications and he had only seen these set to 1.00 across, I figured I'd bring this back up. Why would this be changed? Anyone with some idea's as to why this would have been changed? I get that they are the boss values...but both stock gt and cobra jet share the 1.00 value and boss is set to the values I listed. The reason this is got me asking questions is I've got a line on a boss longblock.

Those are the values the boss calibrations use

[neoh2ning]

2013 boss i emailed support but they told me that is not supported

[Eric@HPTuners]

2013 boss i emailed support but they told me that is not supported

Only if you are running the track key calibration. I have no yet finished those definitions. If you flash it with the factory calibration, it will be fine.

[CCS86]

Has anybody done more testing with this parameter and gained insight about its effects?


Notably, Roush stage 1 and Ford Racing supercharged (FPDX) calibrations differ a lot, when they are essentially the same physical car:

Roush:

RPM Multiplier
1000 1.20
2000 1.20
3000 1.20
5000 1.25
6000 1.25


Ford Racing

RPM Multiplier
6000 1.0
6000 1.0
6000 1.0
6000 1.0
6000 1.0

[CCS86]

Crickets!

I'm going to try to make a little time to test them.

[Eleazer2]

Crickets!

I'm going to try to make a little time to test them.

DID you get time to test? I would like to know the results