Flex fuel sensor

FlashPro questions & answers specific to the 2007-2008 US TSX
Post Reply
Undefined4door
Posts: 31
Joined: Wed Feb 19, 2020 12:42 am

Flex fuel sensor

Post by Undefined4door »

Is it possible to wire a flex fuel sensor into a 2005 tsx running 07 ecu and flashpro?
User avatar
Spunkster
Site Admin
Posts: 22741
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: Flex fuel sensor

Post by Spunkster »

You need a Flex fuel sensor and controller to use it.
Undefined4door
Posts: 31
Joined: Wed Feb 19, 2020 12:42 am

Re: Flex fuel sensor

Post by Undefined4door »

Spunkster wrote: Fri Jul 09, 2021 1:52 pm You need a Flex fuel sensor and controller to use it.
ok just wanted to make sure it was compatible with the tsx ecu. I would just wire it to b22 or b12 correct? Or do i use the secondary fan switch?
User avatar
Spunkster
Site Admin
Posts: 22741
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: Flex fuel sensor

Post by Spunkster »

You can use any of the inputs listed in the drop down in the Ethanol input section.
Akutl1
Posts: 4
Joined: Wed Jul 21, 2021 3:44 am

Re: Flex fuel sensor

Post by Akutl1 »

Spunkster wrote: Fri Jul 09, 2021 1:52 pm You need a Flex fuel sensor and controller to use it.
Is the controller just a PWM converter to give the factory ecu Voltage instead? Will a basic voltage converter work?
User avatar
Hondata
Site Admin
Posts: 10434
Joined: Thu Aug 15, 2002 12:13 pm
Location: Torrance, CA
Contact:

Re: Flex fuel sensor

Post by Hondata »

More or less they are frequency to voltage converters with a buffered output (not duty to voltage or 'voltage converter'). It has to cope with the error frequency. If you go this route it depends on how good you are with electronics and how much time you want to spend getting it to work.
Hondata
Akutl1
Posts: 4
Joined: Wed Jul 21, 2021 3:44 am

Re: Flex fuel sensor

Post by Akutl1 »

Hondata wrote: Wed Jul 21, 2021 8:00 am More or less they are frequency to voltage converters with a buffered output (not duty to voltage or 'voltage converter'). It has to cope with the error frequency. If you go this route it depends on how good you are with electronics and how much time you want to spend getting it to work.
What's the best pin to use with A71 Ecu? 2006 TSX Manual.
User avatar
Spunkster
Site Admin
Posts: 22741
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: Flex fuel sensor

Post by Spunkster »

You can use any of the listed inputs when you have the calibration open and look at the flex fuel options.
Undefined4door
Posts: 31
Joined: Wed Feb 19, 2020 12:42 am

Re: Flex fuel sensor

Post by Undefined4door »

Spunkster wrote: Fri Jul 09, 2021 1:52 pm You need a Flex fuel sensor and controller to use it.
Is there a controller you can recommend?
User avatar
Spunkster
Site Admin
Posts: 22741
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Re: Flex fuel sensor

Post by Spunkster »

There are 2 listed in the help file we know work: https://www.hondata.com/help/flashpro/e ... htsub=flex
Post Reply