What should I scan/log when doing dyno to check "State of the Tune"?
#1
What should I scan/log when doing dyno to check "State of the Tune"?
I'm taking our car to tuner to have the tune scanned/logged. He'll be using HPTuners on a Mustang dyno w/ a wide-band O2 sensor in the extra bung we had welded on the passenger side header collector. What I'm looking to find out is just that the tune is safe and there is nothing unusual going on; I don't suspect there is but when you can find any reason to have it dyno'd at another location, why not? It's kinda fun; don't really care about the HP numbers although it'll be interesting to see difference between Mustang #'s and our previous DynoJet #'s.
Car is a 2004 A4 Corvette w/ Balckwing air filter and LG Pro LT headers.
Anyway, what should I have him log/scan for. Obvioulsy A/F, knock retard and such but what would all the gurus here scan/log when just 'checking things out' to make sure nothing untoward is going on in there? Any toher suggestions for a "state of the tune" data logging session?
Thanks for you help.
__________________
2004 A4 Corvette
Blackwing & LG Pro Lt's w/ cats
Car is a 2004 A4 Corvette w/ Balckwing air filter and LG Pro LT headers.
Anyway, what should I have him log/scan for. Obvioulsy A/F, knock retard and such but what would all the gurus here scan/log when just 'checking things out' to make sure nothing untoward is going on in there? Any toher suggestions for a "state of the tune" data logging session?
Thanks for you help.
__________________
2004 A4 Corvette
Blackwing & LG Pro Lt's w/ cats
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Log commanded AFR (or fuel air multiplier aka EQ Ratio; this
is the same basis as the PE, open loop fuel air tables so a
more plain comparison there, though you would have to flip
the wideband AFR to match). Log Dynamic Cylinder Air and
Dynamic airflow and MAF airflow; these you could compare
to similarly built vehicles and assess the quantity & realism.
Injector pulse width would let you see whether you are at
a safe fuel delivery point or not (injector duty calculated in
Excel). LTFTs just to see if there is an air/fuel error history.
Though this might better be taken off a mixed driving trip
than dyno where you just leave from one closed loop cell.
Log knock learn factor as well as delivered advance and the
KR; this would show whether there is any history of knock
that needs to be flattened.
is the same basis as the PE, open loop fuel air tables so a
more plain comparison there, though you would have to flip
the wideband AFR to match). Log Dynamic Cylinder Air and
Dynamic airflow and MAF airflow; these you could compare
to similarly built vehicles and assess the quantity & realism.
Injector pulse width would let you see whether you are at
a safe fuel delivery point or not (injector duty calculated in
Excel). LTFTs just to see if there is an air/fuel error history.
Though this might better be taken off a mixed driving trip
than dyno where you just leave from one closed loop cell.
Log knock learn factor as well as delivered advance and the
KR; this would show whether there is any history of knock
that needs to be flattened.