question about air intake. - The Unofficial BMW M5 Messageboard (m5board.com)

phillym5 · 8th March 2003, 04:10

i had the dinan cai and just wasnt happy. it more or less robbed the car of horsepower, made the MAFS bad, and was the cause of alot of SES lights. so i put new MAFS on and stock airboxes. ive gotten my lost horsepower back and no more SES light. the question is, the stock intake under the bumper(where the air comes from) seems a little bit restrictive. would it be better to cut up the old intakes(dinan carbon fibre) and reroute the pipe to draw air from next to the fog light and then into the airbox? it seems like that would give it a form of forced induction on the highway. would it really matter? or does the restricted pipe use the air it really needs? thanks in advance,

josh.

MIB · 8th March 2003, 04:16

Isn't that basically what the AA CAI does. Use the stock boxes but also the ram air effect by channelling it from out the front.

8th March 2003, 12:30

Hi Josh,
This is pretty much what I did. I have the Dinan CAI, but as not much air was getting into the filters, I routed vents from the front grille into the area where the filters are located, I also opened up the panel next to the fog lamps and covered it with mesh. Now I have lots of air going into the Dinan CAI. I do know that there has been mention of the potential for water to get into the filter/engine, so location and filter protection (Dinan has a special water resisitant filter sock) are important.

Cheers.

01M5 · 8th March 2003, 18:37

Quote:

Originally posted by BeastPower
Hi Josh,
This is pretty much what I did. I have the Dinan CAI, but as not much air was getting into the filters, I routed vents from the front grille into the area where the filters are located, I also opened up the panel next to the fog lamps and covered it with mesh. Now I have lots of air going into the Dinan CAI. I do know that there has been mention of the potential for water to get into the filter/engine, so location and filter protection (Dinan has a special water resisitant filter sock) are important.

Cheers.

Do you have any pictures?

MAH · 9th March 2003, 01:59

Quote:

Originally posted by MIB
Isn't that basically what the AA CAI does. Use the stock boxes but also the ram air effect by channelling it from out the front.

Bingo! This is exactly what the AA CAI does. Great upgrade.

Mark