removing AFM on NB
Moderators: timk, Stu, -alex, miata, StanTheMan, greenMachine, ManiacLachy, Daffy, zombie, Andrew, The American, Lokiel
- 16bit
- Speed Racer
- Posts: 2346
- Joined: Wed Nov 29, 2006 1:51 pm
- Vehicle: NB8A - Supercharged
- Location: Brisbane Southside
removing AFM on NB
Hello all I was wondering what would need to be done to be able to remove the AFM on my 98 nb. I have a piggy back computer (xede) which i would think would be able to handle it. Would I need another sensor of sorts? I would like to get rid of it for flow reasons mainly. Has anyone done this and if so how has driveability been effected if at all? Any help or advice would be greatly appreciated.
98 evo gold - rotrexed and loving it.
This post has been printed using recycled pixels
This post has been printed using recycled pixels
-
- Speed Racer
- Posts: 2057
- Joined: Mon Jun 19, 2006 12:05 pm
- Vehicle: NB SP
- Location: Brisbane
removing AFM on NB
You would need to use a MAP sensor instead, which will require after market ECU. The std afm causes three parts of f-all restriction, so unless you have a much better excuse for needing an after market ECU, save your dollars. 

Pain is temporary, quitting lasts forever.
-
- Racing Driver
- Posts: 1751
- Joined: Sun Apr 27, 2003 11:00 am
- Vehicle: ND - 2 GT
- Location: Bayside - Melbourne
- Contact:
removing AFM on NB
Damn...was too slow in typing.... what he said ^
Former owner of Mailbu Stacey, Smurfette and Tweety.
- 16bit
- Speed Racer
- Posts: 2346
- Joined: Wed Nov 29, 2006 1:51 pm
- Vehicle: NB8A - Supercharged
- Location: Brisbane Southside
removing AFM on NB
can't do it with xede i have found oh well.
98 evo gold - rotrexed and loving it.
This post has been printed using recycled pixels
This post has been printed using recycled pixels
-
- Forum Guru
- Posts: 4897
- Joined: Mon Apr 24, 2006 7:27 pm
- Vehicle: NA8
- Location: Moruya, NSW
removing AFM on NB
NMX516 wrote:You would need to use a MAP sensor instead, which will require after market ECU. The std afm causes three parts of f-all restriction, so unless you have a much better excuse for needing an after market ECU, save your dollars.
So, does the NB8A MAF flow any better than the NA8 one? The NA8 one looks restrictive - it seems way smaller in area than the throttle body.
’95 NA8
-
- Speed Racer
- Posts: 2057
- Joined: Mon Jun 19, 2006 12:05 pm
- Vehicle: NB SP
- Location: Brisbane
removing AFM on NB
I'm fairly certain that the NA8 and NB ones are the same.
Pain is temporary, quitting lasts forever.
-
- Racing Driver
- Posts: 1692
- Joined: Thu Apr 06, 2006 7:48 pm
- Vehicle: NA6
- Location: Sydney
- Contact:
removing AFM on NB
NMX516 wrote:I'm fairly certain that the NA8 and NB ones are the same.
Really? i thought they looked a little different =/
http://Run-It-Hard.com - We're here to have fun!
- Steampunk
- Speed Racer
- Posts: 4670
- Joined: Wed Oct 10, 2007 9:16 am
- Vehicle: NA6
- Location: Southside of Breeze-bane
removing AFM on NB
MXHEVN wrote:NMX516 wrote:I'm fairly certain that the NA8 and NB ones are the same.
Really? i thought they looked a little different =/
They are.
Inside the NA8 is a single column with a hole/cylinder in the centre that houses the wire-air temperature sensor.
Inside the NB's, they have a grid and I'm not sure where the temperature sensor is in there, but probably in the middle as well.

-
- Speed Racer
- Posts: 2057
- Joined: Mon Jun 19, 2006 12:05 pm
- Vehicle: NB SP
- Location: Brisbane
removing AFM on NB
Well there you go....
Lucky I wasn't 100% certain, only fairly certain 


Pain is temporary, quitting lasts forever.
- Regie
- Speed Racer
- Posts: 4259
- Joined: Thu May 15, 2008 3:02 pm
- Vehicle: NC - V8
- Location: Sydney
removing AFM on NB
1red5 wrote:MXHEVN wrote:NMX516 wrote:I'm fairly certain that the NA8 and NB ones are the same.
Really? i thought they looked a little different =/
They are.
Inside the NA8 is a single column with a hole/cylinder in the centre that houses the wire-air temperature sensor.
Inside the NB's, they have a grid and I'm not sure where the temperature sensor is in there, but probably in the middle as well.
the NB temp sensor it attached to the airbox itself
MY07 NC, Mazdaspeed Body, Ohlins, Full GWR Exhaust, 17x9 RPF1's, 4.1FGR and lots lots more
- AB7
- Racing Driver
- Posts: 637
- Joined: Thu Jun 07, 2007 2:42 pm
- Vehicle: ND - 2 GT
- Location: Melbourne
removing AFM on NB
Yes, NB temp sensor is near the airbox. I got hydra EMS & moved mine closer to TB since I ditched the AFM.
Return to “MX5 Engines, Transmission & Final Drive”
Who is online
Users browsing this forum: No registered users and 3 guests