LQ9 - setup parameters - Bog/lull off idle
#1
LQ9 - setup parameters - Bog/lull off idle
I have setup my (2004) LQ9 using the FAST EZ-LS, originally using most of the default settings in the setup wizard, but started to play a bit with the numbers to get it running better/stronger... Seems to pull hard through all the shifts and RPM range after I have a bit of movement and rpm built up. If I "punch" it from a stand still from idle, I seem to get a "bog" or lull until it climbs in rpm..... Its transplanted in a rock crawler/rock bouncer so that initial launch is key, and Im missing out...
Motor internals are stock, with headers/exhaust and a aftermarket cold air intake.... Th400
Some of the current values I have entered in are:
Fuel pressure : 58 psi
Injectors : 25lb
Timing idle : 22
All in timing : 32
All in timing rpm: 3000
AFR:
Idle - 13.1
Cruise- 14
WOT - 13
Just looking some some input on the numbers I have entered in??? Things to change or look for ???
Thanks!
Motor internals are stock, with headers/exhaust and a aftermarket cold air intake.... Th400
Some of the current values I have entered in are:
Fuel pressure : 58 psi
Injectors : 25lb
Timing idle : 22
All in timing : 32
All in timing rpm: 3000
AFR:
Idle - 13.1
Cruise- 14
WOT - 13
Just looking some some input on the numbers I have entered in??? Things to change or look for ???
Thanks!
#3
TECH Veteran
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None of the parameters you listed suggest any way to control tip-in fueling. I'm going to go out on a limb and guess that such a simplistic tuning solution is probably geared toward stock 5.7l motors, and one of those "default settings" you mentioned may need more scrutiny.
#4
There is a wideband 02 - but have not looked at the values. Will check it out!
#5
None of the parameters you listed suggest any way to control tip-in fueling. I'm going to go out on a limb and guess that such a simplistic tuning solution is probably geared toward stock 5.7l motors, and one of those "default settings" you mentioned may need more scrutiny.
#7
I run extremely shallow gearing and not much of an exhaust, so its confusing at times because I get lots of popping out the exhaust during de-acceleration... Leading me to believe its running too rich... but i dont think its the case.....
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#9
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Check also the burst knock stuff since this is a truck
motor/PCM donor. Raise the delta g/cyl numbers at
least 2X from factory truck values, to keep from the
burst knock triggering on just about any throttle (or
even RPM run-up in 1st) transition.
motor/PCM donor. Raise the delta g/cyl numbers at
least 2X from factory truck values, to keep from the
burst knock triggering on just about any throttle (or
even RPM run-up in 1st) transition.
#10
I dont think I have seen that as a option to change within the FAST EZ LS module?