MAF upgrade
CL Community Team
Joined: Apr 2001
Posts: 16,533
Likes: 1,379
From: Austin, TX
Claims are claims and RX line is not a performance line. The fuel metering is closed loop system and just tweaking one portion will end up being compensated by another. Nothing comes for free and a change here can change indicators but some other thing/factor will change.
One thing for sure will help is to cut down on the weight of the RX. Although I can not recommend but things like user manual, spare tire etc will improve performance.
Salim
One thing for sure will help is to cut down on the weight of the RX. Although I can not recommend but things like user manual, spare tire etc will improve performance.
Salim
Pit Crew
Joined: Nov 2025
Posts: 115
Likes: 39
From: Palm Beach, FL
Claims are claims and RX line is not a performance line. The fuel metering is closed loop system and just tweaking one portion will end up being compensated by another. Nothing comes for free and a change here can change indicators but some other thing/factor will change.
One thing for sure will help is to cut down on the weight of the RX. Although I can not recommend but things like user manual, spare tire etc will improve performance.
Salim
One thing for sure will help is to cut down on the weight of the RX. Although I can not recommend but things like user manual, spare tire etc will improve performance.
Salim
Thread Starter
Pit Crew
Joined: Aug 2025
Posts: 213
Likes: 60
From: AB
Thanks, let me rephrase to ask if the Toyota MAF sensor # 22204-31020 is the correct one to use in 2013-2015 3RX cars or if Denso has developed any better for these cars in the last 10 years and if replacement is preferable to cleaning for optimum performance.
CL Community Team
Joined: Apr 2001
Posts: 16,533
Likes: 1,379
From: Austin, TX
Call the dealer parts and give them your vin. I would only trust parts that I get through the dealership. For me, I save on labor and don't mind paying premium price. Although you should ask for discount.
Salim
PS: The above may not apply for generic stuff but anything electronic or related to engine, stick with genuine OEM.
Last edited by salimshah; Apr 14, 2026 at 09:09 AM.
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