Air Filter Change

Engines, Transmissions & Final Drive questions and answers

Moderators: timk, Stu, -alex, miata, StanTheMan, greenMachine, ManiacLachy, Daffy, zombie, Andrew, The American, Lokiel

Veloce
Fast Driver
Posts: 430
Joined: Wed Aug 16, 2006 8:24 am
Vehicle: NA6
Location: Brisbane

Air Filter Change

Postby Veloce » Sun Jul 12, 2009 8:44 pm

I am about to reinstall the original air cleaner (replacing a fine metal gauze one) fitted to the car when i bought it. A friend said that the ECU automatically adjusts the mixture when refitted. Is this correct or does the mixture and idle need to be manually adjusted? Thanks on behalf of a non mechanic. If this is OK to do I'll have the filter up for sale soon for anyone interested.
Make something idiot-proof, and somebody will make a better idiot.
2007 Limited Edition (back in the saddle again)

User avatar
Steampunk
Speed Racer
Posts: 4670
Joined: Wed Oct 10, 2007 9:16 am
Vehicle: NA6
Location: Southside of Breeze-bane

Air Filter Change

Postby Steampunk » Sun Jul 12, 2009 9:06 pm

If your friend meant that the ECU will detect more or less air flow going through your Air Flow Meter flap, which is dependent on how restrictive the filter's media is, and thus adjust fueling in accordance to what it wants it's AFR to be, then yes, it will "change" the ECU.
But having said that, the change is minor and fairly neglible, so changing air filter to whatever you want is easy and safe and you don't have to do anything else.

That metal gauze filter you stated sounds pretty nasty Rob, so the changing it is for the best.
Image


Return to “MX5 Engines, Transmission & Final Drive”

Who is online

Users browsing this forum: No registered users and 3 guests