Welcome to Flyin' Miata!

FM O2 signal modifier

FM O2 signal modifier
FM O2 signal modifier
$139.00
Prevents the stock ECU from pulling fuel under boost.

Exclusive to Flyin' Miata

Availability: In stock

OR
Description

Details

A stock ECU can pull over 30% of its fuel if it thinks the engine is running rich. The actual amount depends on the model of car. This is a problem when you have a boosted car and you`re trying to deliver more fuel. At best, this means poor driveability until the computer goes into open loop mode. At worst, it can have catastrophic and expensive results. The signal modifier prevents the ECU from seeing a rich condition under boost. Simple installation and no effects when the car is not generating boost. Actually, we recently redesigned it for better reliability, easier installation and a smaller footprint!

A popular addition to cars equipped with Powercard fuel management as this solves a characteristic lean mixture at part throttle. Not needed for the Voodoo Box.

Also very useful for Mazdaspeed MX-5 turbo cars with aftermarket intakes. This helps solve a characteristic hesitation problem that appears when the car spools up faster than stock.

Intended for use only with stock ECU. Not required for cars with full replacement ECUs such as the Hydra Nemesis, FM221 or Megasquirt. If you have a "narrowband" A/F meter that uses the stock O2 sensor, it will read incorrectly when you are in boost - well, more so than usual. Sorry, the little baby Miata is not included.

 Please note that we cannot ship this product to California as it will not meet emissions regulations.

Additional Information

Additional Information

Part number 07-46300
TÜV approval available No
Fits: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004 (non-MSM), 2005 (non-MSM), MSM, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Manufacturer Flyin' Miata
Flyin' Miata exclusive Yes
Fits Exocet? Yes
Proposition 65 Warning: Cancer and reproductive harm
California emissions Not emissions legal in California
Reviews

Customer Reviews 4 item(s)

Didn’t work
Did absolutely nothing no matter what I adjusted it to. This has also been the case for a lot of other users. Skip this for a real ECU and tune

Note from FM: A real ECU is a good option, but it's not always an option.
Rating
Review by Alex / (Posted on 5/13/2018)
I love this product!
I received this piece from purchasing the FM MSM Intake Kit, and I am really happy with the results. I was a little bit lazy in the beginning, because after the intake installation, I just truely forgot and put it aside until now. The MSM has the NOTORIOUS boost hesitation, but once I installed this to my car (Stock ECU), my car was not hesitating AT ALL. This piece is pricey to purchase on it's own, but I believe for the price you're paying for, it is really such a great deal!
Rating
Review by Sam / (Posted on 3/4/2018)
Very low hysteresis O2 signal modifier.
It's functionally similar to the older version that used a Hobbs switch with a 0.3v reference generator, but this one has hysteresis so small that it's practically unmeasureable. So you get consistent results whether you're rolling into or out of the throttle. However, as with the Hobbs switch version, the diaphragm is limited to one bar of boost.
Rating
Review by Ray / (Posted on 1/25/2018)
Too expensive.
Buddy.... 129 dollars? Its literally just a pressure switch. I dont wanna be rude but......

Note from FM: It's not just a pressure switch. It's a custom made electronic controller that alters the signal from the O2 sensor. There's a pressure sensor as part of it and it's integrated into a single component, but it's not just a pressure switch. If you try to replace this item with a simple switch, you will get errors due to a missing O2 sensor signal.
Rating
Review by Lolo / (Posted on 6/1/2017)
Instructions
Click here for instructions for this part.

Why stop here? Consider this upgrade.

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.