Increased my Mass Flow from 199 g/s to 210.76 g/s with only a drop-in K&N filter. (panel type)
03-07-2006, 11:05 AM
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Increased my Mass Flow from 199 g/s to 210.76 g/s with only a drop-in K&N filter. (panel type)
210.76 @ 6320 rpm, 30 degrees timing, fuel consumption was 35.7 L/h.
03-07-2006, 12:13 PM
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How many miles had the old filter been in service?
The 5% gain is certainly significant, but it could easily be explained by an old dirty filter. I'd be curious to see a comparison between a new OE filter and a K&N.
03-07-2006, 01:10 PM
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old filter (Mahle) had about 30,000 miles on it. It wasnt terribly dirty- I've seen worse.
but a comparo of new filters would have been more accurate. I'd be curious to see what X pipes and a center and rear muffler would add.
03-07-2006, 02:24 PM
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MAF: H-pipe versus X-pipe
With only a crossover change on his 97 A8, <a href="https://forums.audiworld.com/a8/msgs/99521.phtml">KaMaKaZieP Reported</a> increasing MAF from 206 to 211 g/sec.
After a <a href="https://forums.audiworld.com/a8/msgs/54951.phtml">Supersprint Exhaust</a> with stock H-pipe was installed on PaulW's 97 A8, I measured 216 g/sec (sorry I don't have a "before").
<a href="http://www.tyresmoke.net/ubbthreads/showflat.php?Cat=1,20,22,25,27,3&Number=246410&pag e=1&view=collapsed&sb=5&o=&fpart=1">Swen Reported</a> 292 g/sec after installing an X-pipe to his S8's already <a href="https://forums.audiworld.com/a8/msgs/56520.phtml">Custom Dual Exhaust</a>, which compares to the 253 g/sec I've measured on my stock S8.
KaMaKaZieP's MagnaFlow X-pipe
<img src="http://www.tonypai.com/2005_0707Image0009.JPG">
Swen's custom X-pipe
<img src="http://www.tyresmoke.net/attachments/246387-173_7313s.jpg">
After a <a href="https://forums.audiworld.com/a8/msgs/54951.phtml">Supersprint Exhaust</a> with stock H-pipe was installed on PaulW's 97 A8, I measured 216 g/sec (sorry I don't have a "before").
<a href="http://www.tyresmoke.net/ubbthreads/showflat.php?Cat=1,20,22,25,27,3&Number=246410&pag e=1&view=collapsed&sb=5&o=&fpart=1">Swen Reported</a> 292 g/sec after installing an X-pipe to his S8's already <a href="https://forums.audiworld.com/a8/msgs/56520.phtml">Custom Dual Exhaust</a>, which compares to the 253 g/sec I've measured on my stock S8.
KaMaKaZieP's MagnaFlow X-pipe
<img src="http://www.tonypai.com/2005_0707Image0009.JPG">
Swen's custom X-pipe
<img src="http://www.tyresmoke.net/attachments/246387-173_7313s.jpg">
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