Just in!!! MAF readings from my 03 S8............
05-23-2008, 10:44 AM
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Just in!!! MAF readings from my 03 S8............
<center><img src="http://pictureposter.audiworld.com/62762/maf.jpg"></center><p>Meet up with Ross and Chris during lunch to run some MAFs on our cars...
Bone stock 03 S8 with 39k on the clock...
Temp 85 degrees.
Humidity 50%
Nice to meet you guys. Thanks again!!!
Bone stock 03 S8 with 39k on the clock...
Temp 85 degrees.
Humidity 50%
Nice to meet you guys. Thanks again!!!
05-23-2008, 12:15 PM
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For comparison ...
Maximum MAF readings,
206 g/sec ... KaMaKaZieP's stock '97 A8
211 g/sec ... KaMaKaZieP's A8 with X-pipe crossover
216 g/sec ... PaulW's '97 A8 w/ Supersprint exhaust
241 g/sec ... TimD's stock '03 S8
253 g/sec ... my stock '01 S8
293 g/sec ... Swen's '01 S8 w/ custom dual exhaust and X-pipe
206 g/sec ... KaMaKaZieP's stock '97 A8
211 g/sec ... KaMaKaZieP's A8 with X-pipe crossover
216 g/sec ... PaulW's '97 A8 w/ Supersprint exhaust
241 g/sec ... TimD's stock '03 S8
253 g/sec ... my stock '01 S8
293 g/sec ... Swen's '01 S8 w/ custom dual exhaust and X-pipe
05-23-2008, 01:49 PM
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One more data point . . .
206 g/sec ... KaMaKaZieP's stock '97 A8
211 g/sec ... KaMaKaZieP's A8 w/ X-pipe
216 g/sec ... PaulW's '97 A8 w/ Supersprint exhaust
241 g/sec ... TimD's stock '03 S8
242 g/sec ... sillyfast's '03 S8 w/ X-pipe and no rear muffler
253 g/sec ... ryoung's stock '01 S8
293 g/sec ... Swen's '01 S8 w/ custom dual exhaust and X-pipe
I'll post readings of my A8 w/X-pipe soon - don't have the car today.
211 g/sec ... KaMaKaZieP's A8 w/ X-pipe
216 g/sec ... PaulW's '97 A8 w/ Supersprint exhaust
241 g/sec ... TimD's stock '03 S8
242 g/sec ... sillyfast's '03 S8 w/ X-pipe and no rear muffler
253 g/sec ... ryoung's stock '01 S8
293 g/sec ... Swen's '01 S8 w/ custom dual exhaust and X-pipe
I'll post readings of my A8 w/X-pipe soon - don't have the car today.
05-23-2008, 02:53 PM
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Re: Some of this just don't make sense...
Altitude, Humidity, air filter.... these things must be playing a part because how can a stock S8 have more airflow than one w/ an X-pipe and no muffler and Swen's 293 seems weird to me too because he's got more mufflers and resonators in his system than we do etc.
05-23-2008, 09:02 PM
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Swen's dual exhaust is very low pressure drop.
Adding that 2nd muffler essentially doubles the cross sectional area of the exhaust after the X-pipe.
Gotta agree, though, that the results do seem weird. It certainly would have been very helpful if we had also recorded the other variables you mention.
Gotta agree, though, that the results do seem weird. It certainly would have been very helpful if we had also recorded the other variables you mention.
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05-24-2008, 09:21 AM
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Paul's and mine with this ...
The <a href="https://forums.audiworld.com/a8/msgs/49791.phtml">CarChip EX</a>; I originally purchased it as a cheap data logger when on track.
<img src="http://www.davisnet.com/productpics/big/8220_Keys.jpg">
<img src="http://www.davisnet.com/productpics/big/8220_Keys.jpg">
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