O2 Sensor

[black sky]

Hi people

I've got an rb20 running of a microtech lt 12 and was wondering if the O2 sensor was needed to be connected.Cause at the moment it aint. the wire's cut from the microtech cause at the moment I'm gettin really shitty fuel economy and i was wondering if i put in the O2 Sensor would it make a difference?? At the moment it does backfire a fair bit.

Also my car's making 241.3 awkw but it's running a little lean up top goes to about 12.6 on 16psi, my car has got all the fueling mods like. Walbro 500hp fuel pump and GTR injectors which have not reached 100% duty cycle. i was wondering if there are any ideas why it might be running a little lean and up top. I'm going to change the fuel filter soon, could it be that??? On 14psi it's runnin like a dream with a very safe Air fuel ratio of 11.9 to 1 so any ideas to get the car to run richer up top would be good so i can wind more boost into it.

any help would be great

Cheers

anthony

Edited December 19, 2005 by black sky

[RB30-POWER]

Microtech does not use O2 sensor as it does not have closed loop function.

You can hook it up for display purposes only.

Unless you finely tune every load point/cell on the microtech you will have bad economy because of the lack of closed loop on this ecu.

Its the biggest downside of Microtech and why most people avoid them like the plague.

[PHaT MR30]

i believe the latest LT12s and lt16s have a wideband sensor which you can effectively 'self tune' if your game, don't quote me on that though

[RB30-POWER]

i believe the latest LT12s and lt16s have a wideband sensor which you can effectively 'self tune' if your game, don't quote me on that though

<{POST_SNAPBACK}>

you beleived wrong mate.

Edited December 19, 2005 by RB30-POWER

[Jago]

i have an LT8 on my RB20-DETT, getting around 260km to a tank, if that, handset is reading 19 on the a/f meter *shrugs*

somethin is shagged that's all i know

[PHaT MR30]

you beleived wrong mate.

<{POST_SNAPBACK}>

http://microtechefi.com/html/LT16.htm

User definable auxilliary input and output functions enabling such functions as traction control and self - tune.

Wide band Oxygen sensor input and 45psi map sensor standard issue.

[black sky]

http://microtechefi.com/html/LT16.htm

<{POST_SNAPBACK}>

So does that mean that if i put in the oxygen sensor that my fuel consumption will be better. I've got the ltx12

Cheers

anthony

[rob82]

No - Simply putting an O2 sensor on a car wont make fuel consumption better. Your ECU must have closed loop function to trim fuel up or down. And as for microtech and Auto tune function - wouldn't rely on it. Have not seen any of the cheap ECU do auto tune very well at all.

[Jago]

it's an ECU designed for racing, meaning to get good fuel consumption you will have to tune ALL load points, rather well too.

was speaking to a mate who has an R33 with 250rwkw and a microtech and he's getting around 250km to a tank