Thank You EFILive!
Customer's results today for a 2005 CTS-V:
Green line is stock GM calibration.
Blue line is my tune, pull #1.
Red line is my tune, pull #2.
Ignore the crappy tail pipe O2 reading as it is not accurate
Thank you for providing the wonderful tools in V7.
This customer's trims are -1.49% across the board.
2009 Z06 LS7 / 2008 Sierra Denali AWD L92 6L80E
Flashing control modules since 2001. 8-)
Who needs a MAP sensor on a supercharged LS6 anyway.
Another CTS-V customer picked up 6/10ths in the quarter mile...and set a personal best of 12.917 @ 109.34 tonight.
2009 Z06 LS7 / 2008 Sierra Denali AWD L92 6L80E
Flashing control modules since 2001. 8-)
Who needs a MAP sensor on a supercharged LS6 anyway.
You can do better with the tune judging from that dyno graph. The engine is still runnning very rich. The LS6 requires PULP so you might as well go more aggressive on the AFRs. Anywhere between 12.5-12.8 is a very safe target.
Re: Thank You EFILive!
Ignore the crappy tail pipe O2 reading...it doesn't match the wideband pre-cat.
The calibration is right on the money and what is commanded is produced. Via the wideband O2 pre-cat, she's lean and mean... The Aussies would be saying "Put some fuel to that thing already!"
A repeatable + 40 / 30 FT-LBS...on a LS6 that has never been cracked open --- the AFR is staying right where it is. 8)
2009 Z06 LS7 / 2008 Sierra Denali AWD L92 6L80E
Flashing control modules since 2001. 8-)
Who needs a MAP sensor on a supercharged LS6 anyway.
I seen the same thing happen on the dyno by me. Dialed the car in for 13.0 went to the dyno and their WB read 13.7 at the beginning of the pull and got progresively richer....
EFILive - The Single version of the Truth
Larry - HumpinSS
Yeap... me too... that happened to me also
"All that is needed for the triumph of evil is that good men do nothing..."
Wideband AFR sampling from the tailpipe will display a leaner reading than what is occuring at/near the engine ahead of the catalysts. Knowing that, the engine in these graphs is running richer than what is displayed, which makes the condition worse.
Also~
Why was this vehicle's power fugures displayed in STD?
Why not use the industry-wide, accepted SAE standards to display power figures that everyone else in the industry can relate and compare to?
The only real reason why folks choose to use STD or Uncorrected figures is to "fluff" up the numbers for bragging rights or to sell parts like the manufacturers do. Cold Air Kit manufacturers are the worst offenders of this.
Incorrect or skewed data by using STD or Uncorrected power measurement is meaningless for comparison if everyone else is using a different standard than you. (SAE)
-Roland
Agree, STD is not the preferred but that is what the customer sent me. (SAE is only 2% lower...)
The tailpipe AFR on the dyno is not showing the correct AFR. This car was wideband O2 dialed in with an extra bung before the cat to perfection.
2009 Z06 LS7 / 2008 Sierra Denali AWD L92 6L80E
Flashing control modules since 2001. 8-)
Who needs a MAP sensor on a supercharged LS6 anyway.
2% is a lot on a 400+ BHP engine.
I'm not here cheerlead for anyone~ Just here to learn and state what I saw as inaccurate/skewed information based on my direct experience.
BTW- "EFI Live Is Great"....
-Roland
In SAE numbers, the tune gained 47.3 hp / 35.5 ft-lbs over factory.
With a wideband before the cat, the AFR is 12.5 to 13.0 with textbook precision where it needs to be rich and lean.
2009 Z06 LS7 / 2008 Sierra Denali AWD L92 6L80E
Flashing control modules since 2001. 8-)
Who needs a MAP sensor on a supercharged LS6 anyway.
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