Toyota MinutesMods on 4x4Wire

Toyota Minute Mod: Adjusting the Air Flow Meter


Welcome to 4x4Wire! You, your 4x4, and Access... Short Cuts
More on 4x4Wire: 4x4 Tech | 4x4 Reviews | Destinations | 4x4 Access
More 4x4 Tech 4x4Wire: Jeep Tech | Jeep Projects | Jeep News | Jeep Reviews | Jeep Gallery
Toyota FAQ | Toyota Projects | Toyota Maintenance | Toyota 4Runner | Toyota Tech | Hot Toy | Insider
Mitsubishi on 4x4Wire | Mitsubishi Projects | Mitsubishi Reviews | Mitsubishi Tech
Intro | Isuzu News | Isuzu Tech | Isuzu Events | 4x4Wire Gallery


5.jpg
The air flow meter out of the vehicle.

22RE motors are famous for their reliability, not their power. Common modifications such as free flow air filters, camshafts, and exhaust headers can help give Toyota trucks more power to turn big, heavy tires. These modifications increase air flow and can cause a lean condition. Too lean of a fuel mixture can result in detonation and holes burnt in pistons in extreme cases. 22RE motors utilize a air fuel meter (AFM) system, as opposed to mass air flow or speed density, in order to regulate the air entering the motor. The AFM is essentially a flapper door attached to a flat wound spring. As air passes the door the spring moves. This movement is then translated into an electric signal that tells the electronic control unit (ECU) how much fuel to deliver. A modified engine will move more air through the engine on a given combustion cycle than a factory motor, so the AFM must be adjusted to compensate. This is an easy modification that only requires a razor blade and a Phillips screwdriver.


5.jpg 5.jpg 5.jpg
The internals of the AFM. Marking the initial position. Loosing the screw to make the adjustment.

Note: The air flow meter does NOT need to be removed from the truck in order to perform these modifications, this was only done for illustration purposes.


Related Links

Trending on 4x4Wire TrailTalk Forums

New Topics on TrailTalk
'95 Montero 3.5L Coil Blowing
by Rick1013 - 05/28/20 12:45 AM
Looking for 2nd row seats in my 1989 Mitsubishi Pa
by tiscud75 - 05/26/20 06:06 PM
2003 montero sport worth it?
by BC4x4 - 05/23/20 11:34 PM
WTB Arb 3434010 Gen I bar
by Brookyntero - 05/20/20 05:18 PM
amigo 2.6 coil
by jee - 05/19/20 06:01 PM
WTB - Montero Bouncy Seat
by Brookyntero - 05/11/20 08:27 PM
Recent Posts on TrailTalk
Looking for 2nd row seats in my 1989 Mitsubishi Pa
by Brookyntero - 05/29/20 02:09 PM
'95 Montero 3.5L Coil Blowing
by Rick1013 - 05/28/20 12:45 AM
2003 montero sport worth it?
by MarkG - 05/27/20 05:07 PM
1989 Mitsu Pajero/Dodge Raider for sale
by redpajero1989 - 05/24/20 12:30 AM
suzi the psychic
by rascott - 05/22/20 07:50 PM
WTB Arb 3434010 Gen I bar
by Brookyntero - 05/20/20 05:18 PM
Montero Compass Wiring
by kela - 05/15/20 01:35 PM







4x4Wire Social:

| 4x4Wire on FaceBook


OutdoorWire, 4x4Wire, JeepWire, TrailTalk, MUIRNet-News, and 4x4Voice are all trademarks and publications of OutdoorWire, Inc. and MUIRNet Consulting.
Copyright (c) 1999-2019 OutdoorWire, Inc and MUIRNet Consulting - All Rights Reserved, no part of this publication may be reproduced in any form without express written permission
You may link freely to this site, but no further use is allowed without the express written permission of the owner of this material.
All corporate trademarks are the property of their respective owners.