Wideband power. From ecu or elsewhere? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Bigmaxy · 02-25-2014, 06:46 AM

Hi all. I've searched the threads so apologies if this has been asked elsewhere.

I've installed an innovate lc2 wideband controller which seems to be giving quite different readings to the factory a/f sensor. That doesn't bother me too much as it was recalibrated during the tune as it now reads down to 11.1 or so.

In researching the discrepancy I've found lots of threads that say the power and ground should be the same as other equipment that uses the controller. And that tapping the power in various places can result in up to a full 1 a/f...

I grabbed some power from behind the headunit while I was in there but am now thinking I should take it from the ecu since I'll be running one of the outputs into the ecu for an ecutek input.

What have others done? Am I worried over nothing?
At a steady cruise it is around 14.5 so seems OK.

It's just that when I boot it the factory sensor goes all the way down to 11 while the innovate shows a quick dip into the 11's then shows more like 12.5.

This is f.i. btw and I'm using a p3cars vent unit to display.

Cheers all

Sent from my GT-I9505 using Tapatalk

Deadspool · 02-25-2014, 07:50 AM

I pulled my power from the dimmer and the red/blue wire in the same area. I grounded to the dash frame.

Im using an AEM Failsafe, works perfect.

lbroskee · 02-25-2014, 12:39 PM

@ecko04 is running this setup exactly. maybe he can help

ecko04 · 02-25-2014, 03:02 PM

I grabbed power from the ignition harness. My innovate and factory readings are spot on. The factory does not read accurately below 12. The factory will undoubtedly refresh quicker than the innovate.

lbroskee · 02-25-2014, 03:05 PM

Quote:

Originally Posted by ecko04

I grabbed power from the ignition harness. My innovate and factory readings are spot on. The factory does not read accurately below 12. The factory will undoubtedly refresh quicker than the innovate.

so u can get fast or accurate readings basically?

ecko04 · 02-25-2014, 03:11 PM

Quote:

Originally Posted by lbroskee

so u can get fast or accurate readings basically?

Above 12.5 or so, the factory signal will refresh quicker for faster readings. The wideband is more accurate below 12.5, (i.e. WOT boost).

gdrider77 · 02-25-2014, 06:20 PM

I pulled my power from behind the radio on the ignition power. Its a fused 12volt source, and should work fine. Ground behind there as well.

02-25-2014, 06:46 AM	#1
Bigmaxy Senior Member Join Date: Aug 2012 Drives: Pegasus GTS86 Location: Aus Posts: 119 Thanks: 67 Thanked 28 Times in 20 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Wideband power. From ecu or elsewhere? Hi all. I've searched the threads so apologies if this has been asked elsewhere. I've installed an innovate lc2 wideband controller which seems to be giving quite different readings to the factory a/f sensor. That doesn't bother me too much as it was recalibrated during the tune as it now reads down to 11.1 or so. In researching the discrepancy I've found lots of threads that say the power and ground should be the same as other equipment that uses the controller. And that tapping the power in various places can result in up to a full 1 a/f... I grabbed some power from behind the headunit while I was in there but am now thinking I should take it from the ecu since I'll be running one of the outputs into the ecu for an ecutek input. What have others done? Am I worried over nothing? At a steady cruise it is around 14.5 so seems OK. It's just that when I boot it the factory sensor goes all the way down to 11 while the innovate shows a quick dip into the 11's then shows more like 12.5. This is f.i. btw and I'm using a p3cars vent unit to display. Cheers all Sent from my GT-I9505 using Tapatalk

02-25-2014, 07:50 AM	#2
Deadspool Much title. Wow. Join Date: Mar 2013 Drives: 2013 BRZ Sport-Tech Location: Edmonton, AB Posts: 716 Thanks: 118 Thanked 292 Times in 163 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	I pulled my power from the dimmer and the red/blue wire in the same area. I grounded to the dash frame. Im using an AEM Failsafe, works perfect. __________________ ༼ つ ◕_◕ ༽つI PUT A SPELL ON YOU ༼ つ ◕_◕ ༽つ

02-25-2014, 03:02 PM	#4
ecko04 Seems Legit Join Date: Mar 2013 Drives: Toyota Location: Here & There Posts: 855 Thanks: 187 Thanked 438 Times in 250 Posts Mentioned: 24 Post(s) Tagged: 0 Thread(s)	I grabbed power from the ignition harness. My innovate and factory readings are spot on. The factory does not read accurately below 12. The factory will undoubtedly refresh quicker than the innovate. __________________ No build thread. I don't want to be reminded of how much money I spent. [insert profound quote here]

02-25-2014, 06:20 PM	#7
gdrider77 Senior Member Join Date: Oct 2012 Drives: Subaru BRZ Limited Location: Denver, CO Posts: 623 Thanks: 243 Thanked 263 Times in 157 Posts Mentioned: 19 Post(s) Tagged: 2 Thread(s)	I pulled my power from behind the radio on the ignition power. Its a fused 12volt source, and should work fine. Ground behind there as well. __________________

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