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Old 08-17-2009, 05:28 PM   #15
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Quote:
Originally Posted by irpq11 View Post
STD, SAE

Are my numbers actually lower or what?
No, SAE corrected will increase the numbers unless you're below sea level and somewhere really cold and dry.
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Old 08-18-2009, 04:37 PM   #16
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Quote:
Originally Posted by toehead93 View Post
No, SAE corrected will increase the numbers unless you're below sea level and somewhere really cold and dry.
Oh, SNAP. You mean if it were run with SAE it would have been HIGHER than the 317 recorded?

I'm confused. I should be running faster.

Delete if needed.
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Old 08-18-2009, 10:26 PM   #17
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Oh, SNAP. You mean if it were run with SAE it would have been HIGHER than the 317 recorded?
Probably. SAE-corrected does take into account temperature and humidity to theoretically provide a standardized number. Given you dyno'd in the south and in the summer, it's likely that if it were SAE-corrected it would be a higher number.
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Old 08-19-2009, 07:20 AM   #18
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Two questions...does anyone know somewhere in NW FL I can go to dyno my car, and what tuners are you guys using? Someone mentioned a Diablo Sport, but what else? Thanks guys!!
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Old 08-22-2009, 05:13 PM   #19
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Two questions...does anyone know somewhere in NW FL I can go to dyno my car, and what tuners are you guys using? Someone mentioned a Diablo Sport, but what else? Thanks guys!!
If you can drive to Tampa, Jeremy Formato is a great tuner. He is very respected in the LSX community.
www.fasterproms.net

He also visits different tuning shops in other area of Florida.
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Old 08-28-2009, 09:42 PM   #20
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Advertised 400 HP

How does GM get away with advertising the HP at 400 for the L99 and 426 for the LS3 when no one has dyno'd that? Did I miss something in the fine print?
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Old 08-28-2009, 10:55 PM   #21
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How does GM get away with advertising the HP at 400 for the L99 and 426 for the LS3 when no one has dyno'd that? Did I miss something in the fine print?
These Dyno's calculate RWHP (rear wheel Horse power) Chevy calculates Horse Power at the crank.
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Old 08-28-2009, 11:06 PM   #22
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Might as well post mine here.

First run is stock at about 700 miles.

Second run is with rotofab cai and a tune done about two weeks later.

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Old 08-30-2009, 08:12 PM   #23
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How does GM get away with advertising the HP at 400 for the L99 and 426 for the LS3 when no one has dyno'd that? Did I miss something in the fine print?
Because despite what Top Gear tried to promote in their dyno test of a GT500, the number that is advertised is not the same as what you will be testing when you strap it down for a dyno run. GM and every single other automaker out there rates their engines with an engine dyno. This is a test rig that measures the output of the engine. A chassis dyno, which is what you most often see, measures the power at the wheels. This is the power at the crank minus any losses from the drivetrain.
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Old 08-31-2009, 10:28 AM   #24
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Thanks guys. I better understand the process now. Great explanations!
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Old 09-03-2009, 11:20 PM   #25
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Just dyno'd mine tonight, complete stock to the filter, 1050 miles, easy first 450, then having fun. Pulled fuses at about 600 miles.

About 85 degrees, first run 321hp, 336tq. Second run (about 1 minute idling rest) 313hp, 319tq
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Old 09-05-2009, 04:19 PM   #26
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Just dyno'd mine tonight, complete stock to the filter, 1050 miles, easy first 450, then having fun. Pulled fuses at about 600 miles.

About 85 degrees, first run 321hp, 336tq. Second run (about 1 minute idling rest) 313hp, 319tq

Your torque takes a major nose dive around 3500 rpms?
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Old 09-10-2009, 12:23 PM   #27
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how can so many stock L99s have some any different readings? i mean i know temp humidty things of that nature affect it, but i didnt realize it was that much...
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Old 09-17-2009, 04:28 PM   #28
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You have to remember that there are Mustang Dyno's which add a load to the drums where the rear wheels are turning and the load is based on the weight and Co efficient drag of the car being tested. A dyno jet doesn't really have that kind of load and is calibrated differently. Just remember that not all dyno's are the same. Just use it to get your tuning down and take it to the TRACK!!
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