fuel pump and o2
Forum rules
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
fuel pump and o2
In the mega manual they show the 12v for the o2 coming from the output wire of the fuel pump relay. Is this correct for use with a wiide band o2 sensor for the power to cycle on and off to it?
-
SQLGUY
- Experienced Squirter
- Posts: 243
- Joined: Sun May 14, 2006 3:03 am
- Location: Colorado Springs, CO
Re: fuel pump and o2
Interesting question.
For my setup, although I'm using a narrow-band sensor, I installed a "main" relay to provide ignition-switched 12V to the injectors, HEGO, coils, and Microsquirt. The fuel pump relay only feeds the fuel pump. I did my setup this way to ensure that Microsquirt was getting an accurate reading of 12V feeding the injectors and coils.
On the other hand, you won't be going closed-loop until the engine is warm anyway, so having the WBO2 power up when the engine starts should be OK.
For my setup, although I'm using a narrow-band sensor, I installed a "main" relay to provide ignition-switched 12V to the injectors, HEGO, coils, and Microsquirt. The fuel pump relay only feeds the fuel pump. I did my setup this way to ensure that Microsquirt was getting an accurate reading of 12V feeding the injectors and coils.
On the other hand, you won't be going closed-loop until the engine is warm anyway, so having the WBO2 power up when the engine starts should be OK.