FAST classic grey box o2's

[outatime86]

Looking to get a back up o2 for my fast classic grey box. I remember years ago being told that o2's had to be programed into the box, is that true?
Lets say I buy a brand new wideband o2 where or who would I send it along with my grey box to?

Hoping and preying its something that I can set up within the software settings and NOT have to send it anywhere.

Thank you in advance

 

[Chuck Leeper]

No program but the lead has a resistor in it.
FAST was ripping folks off, so we tried to cut the resistor out and put it in a new sensor. Appeared to work.

 

[outatime86]

No program but the lead has a resistor in it.
FAST was ripping folks off, so we tried to cut the resistor out and put it in a new sensor. Appeared to work.

One of my buddies mentioned that you can just email FAST and they will send you a flash program to install on the grey box set up and it will then accept any new wide band o2. I'ma give that a try and see what happens. Also I found the resister you mentioned in the plug, pretty sneaky the way they integrated it.

THANKS CHUCK!

 

[norbs]

You change the resistor, you might as give up any accuracy tuning it. The file is free Email fast.

 

[pacecarta]

as norbs said the resistor is to indicate the offset of the sensor to correct the A/F to minimize actual AF error
the early version software used the resistor to key the sensor to the box as the sensor was calibrated at fast and corrected in the firmware . being that way it would reject any sensor with a different resistor and youd see 0.0 for A/F and you needed to contact FAST and get a replacement keyed sensor to your units serial #
getting a keyed sensor isnt necessary anymore , the box firmware can be updated to accept any new L1H1/L2H2 sensor (ntk 24300) , cant use the XFI sensor
a little info can be read here ..https://www.bmotorsports.com/shop/product_info.php/products_id/580

 

[Chuck Leeper]

Right or wrong, that's how it was done......

 

[Eticket]

This an old thread but yes, fast sells an "option file" that can be enabled in the box to accept a replacement non-keyed O2... it's like $45.

 

[outatime86]

This an old thread but yes, fast sells an "option file" that can be enabled in the box to accept a replacement non-keyed O2... it's like $45.

I didnt know that, thank you for sharing