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Old 11-20-2012, 07:29 AM   #1
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Exclamation DYNO SHEETS EXPERTS

My L99 has 27000 km on it

my modes are:

1- Borla ATAK
2- X-Force LT 1 7/8 headers
3- Roto-Fab CAI

I've hade borla ATAK on my car since it has 4000 km on it without a tune and just yesterday i installed the LT headers
and the intake, then i got it tuned and here is my dyno sheet. should i be disappointed or is that all what i can get from a bolt ons L99

Max Power = 364.44 Max Torque = 383.71

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Old 11-20-2012, 07:50 AM   #2
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That's in the ballpark for this setup
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Old 11-20-2012, 08:03 AM   #3
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To me this looks absolutely normal.

Are you useing 91* or 93* octane gas?
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Old 11-20-2012, 08:05 AM   #4
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What was your baseline? Hi-flow cats or none?

Assuming you started with around 325, you picked up about 39 rwhp which is probably at the low end of what you would expect from these mods...

If you started with 340 there's probably something wrong with your tune.
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Old 11-20-2012, 02:48 PM   #5
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Adding header, CAI, and a tune should get a L99 up to LS3 baseline numbers, which is right where you are.
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Old 11-20-2012, 03:03 PM   #6
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Quote:
Originally Posted by mike.nite View Post
To me this looks absolutely normal.

Are you useing 91* or 93* octane gas?
95 Octane
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Old 11-20-2012, 03:07 PM   #7
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Quote:
Originally Posted by clg_98ta View Post
What was your baseline? Hi-flow cats or none?

Assuming you started with around 325, you picked up about 39 rwhp which is probably at the low end of what you would expect from these mods...

If you started with 340 there's probably something wrong with your tune.

No cats at all, no stupid emission & regulation Crap
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Old 11-20-2012, 03:08 PM   #8
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93 octane tune and no cats should output more power than that in good weather

-what did dyno capture for baro
-what did dyno capture for temp
-what did dyno capture for humidity
-what did dyno capture for AFR **the scale is cutoff in the picture
-what is the spark advance at peak TQ and peak HP
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Old 11-20-2012, 03:18 PM   #9
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Quote:
Originally Posted by ProTools4 View Post
93 octane tune and no cats should output more power than that in good weather
95 Octane and the weather was good (20 C)
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Old 11-20-2012, 03:45 PM   #10
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Seems a little low, I made 383 HP and 383 TQ with just a CAI and no tune. However, that was at 84 degrees and at sea level on an LS3. I would have thought that your mods and a good tune would have netted better numbers, expecially with it being a Dynojet that you were tuned on. Interesting.
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Old 11-20-2012, 03:57 PM   #11
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do you have a copy of your ECU / TCU tune?
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Old 11-20-2012, 04:02 PM   #12
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Unless I'm missing something why did they log the run starting at 4k rpm ?
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Old 11-21-2012, 12:06 PM   #13
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Quote:
Originally Posted by partymn View Post
Seems a little low, I made 383 HP and 383 TQ with just a CAI and no tune. However, that was at 84 degrees and at sea level on an LS3. I would have thought that your mods and a good tune would have netted better numbers, expecially with it being a Dynojet that you were tuned on. Interesting.
This is what I made as well with my LS3 with a Rotofab intake and ported TB but his is an auto L99. Its about right were it should be.
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Old 11-21-2012, 12:23 PM   #14
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Quote:
Originally Posted by partymn View Post
Seems a little low, I made 383 HP and 383 TQ with just a CAI and no tune. However, that was at 84 degrees and at sea level on an LS3. I would have thought that your mods and a good tune would have netted better numbers, expecially with it being a Dynojet that you were tuned on. Interesting.
But you have an LS3, OP has an L99
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