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Old Mar 14, 2007 | 04:07 PM
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MattB
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I got a dyno reading a couple of weeks a go the first time I've ever done it, and wonder what some of the variables are on the chart and what exactly it is telling me. I assumed that the HP/Tq values were at the wheel, is this correct?

The shop has a Dynojet 248/224, and the variables are:
CF: SAE Smoothing: 0 (** I assume this means no smoothing on the graph, so it looks spikey but no harm right?)
Run Type: RO (** I assume this means rear wheel only)
Run conditions: 58.75 F, 24.54 in-Hg, Humidity 7%.
SAE: 1.20. (** ????)

My numbers were 323.54 hp and 334.24 Tq.

What is the SAE: and how does it effect the values for HP and Tq?

The chart does not list an altitude, but this was done in a shop out side of Denver, so the altitude is about 5400ft. How much does this effect the readings? How much more would the readings have been at sea level?

When someone asks were these "corrected numbers" what does that mean?

If anyone wants to know, this is on a 2000 coupe A4, zip tie mod, LS6 intake, LG street headers, high flow cats, mail order tune.

Thanks for any light you can shed on this for me
Matt
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Old Mar 15, 2007 | 05:43 PM
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From: Simpsonville SC
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I believe SAE is the most true numbers you can get. I think. Your numbers arent bad for your mods. A4's seems to hold back alot on the dyno. Hopefully someone with more info will chim in.
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Old Mar 16, 2007 | 01:26 PM
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Someone in the mountain region board was saying that the SAE number was the correction value to calculate the sea level equivalent and was based on the barometer reading. Is this true? At 1.20 it would multiply out to 387 that would be great, but it does not sound right Still, is that rwhp?

This kind of matters for me, I want to run TTS with NASA and if I go to lower altitude my hp will change. TTS has a hp/weight ratio that we need to keep. And, if I go beyond 390 or so I will be bumped out of the class.

Anyone??
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Old Mar 16, 2007 | 01:37 PM
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From: East Meadow NY
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Originally Posted by MattB
Someone in the mountain region board was saying that the SAE number was the correction value to calculate the sea level equivalent and was based on the barometer reading. Is this true? At 1.20 it would multiply out to 387 that would be great, but it does not sound right Still, is that rwhp?

This kind of matters for me, I want to run TTS with NASA and if I go to lower altitude my hp will change. TTS has a hp/weight ratio that we need to keep. And, if I go beyond 390 or so I will be bumped out of the class.

Anyone??
SAE is generally meant to be corrected hp/tq. Your "after" numbers look to be about right for an A4 w/LT headers, High flow cats and a modified intake. As a comparison stock rwhp is around 300 for an A4
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