[sdorn]

Originally Posted by RGRAY

LamboPete has posted some dyno results with the M5.

Dyno results are as follows:

Max HP and Tq at stock: 417.2 HP and 291.7 Tq. at the rear.

Max HP and Tq WITHOUT filers: 426.1 HP and 296.9 Tq. at the rear.

http://www.m5board.com/vbulletin/sho...t=66688&page=4

That small of a gain can be accounted for in the variance of the dyno. In other words, they could have just taken two pulls on the same dyno without doing any mods and seen that kind of variation. It sounds to me like there is no proof at this point this mod has any benefit whatsoever.