Innovate Motorsports LC-2 wide band

[whats77inaname]

I rec'd the Macht Schnell oil distribution block for Christmas from my S.O. (she's awesome like that ) http://machtschnell.com/www.machtsch...ribution-block For a previous build, I have a BNIB AEM oil pressure gauge (100psi) kit that I'm going to use with it. I don't want to use the standard AEM gauge, as I have a p3 gauge that accepts 2 add'l analog inputs, and I'd much rather use the p3 gauge. In doing some research on adding the oil pressure switch to one of two the extra analog lines, I found that you can add this wide band http://www.innovatemotorsports.com/products/lc2.php to the P3 gauge, and it'll display numerically http://www.p3cars.com/bmw-install

EXAMPLE CONFIGURATION – LC-1 AFR Controller:

According to the LC-1 wideband controller documentation, Analog output 2 is the 0-5v output. By default it is 0V = 7.35 AFR and 5V = 22.39 AFR . To configure our gauge to show this on the first analog input, we would use the following settings:

A1.DP, 2 decimal points, 99.99
A1.Lo, 7.35
A1.Hi, 22.39
A1.bL 7.35
A1.bH 22.39

After putting these settings onto the analog input, the gauge will show proper AFR displayed in the Analog 1 gauge mode.

The LC-1 has been replaced by the LC-2. The LC-2 (p/n 3877) is available on Amazon for $155, or on eBay w/a digital gauge for $158. Given all the functionality of the wide band, I'd like to pick one up for install. I have a tune that currently codes out the primary O2 sensors, so I can drop this in instead of the regular sensor.

Question is, has anyone used one of these? I'd like to order in the next day or so to complete the install next weekend, in preparation for s/c'ing sometime in the future.

[downtowncb]

I've had an LC-1 in my LS powered Jeep for 4+ years and I've always been happy with it.

I highly doubt your primary O2's are programmed out because the DME could never run closed loop and the primaries are widebands on our M. More than likely your secondaries are the ones modified in the tune since they are just used for the catalytic converter efficiency monitoring. Unless you're catless you wouldn't want to put an LC-2 wideband in downstream from a cat, since it won't be as accurate.

[whats77inaname]

Originally Posted by downtowncb

I have an LC-1 in my LS powered Jeep for 4+ years and I've always been happy with it.

I highly doubt your primary O2's are programmed out because the DME could never run closed loop and the primaries are widebands on our M. More than likely your secondaries are the ones modified in the tune since they are just used for the catalytic converter efficiency monitoring. Unless you're catless you wouldn't want to put an LC-2 wideband in downstream from a cat, since it won't be as accurate.

You are correct, the primaries are active, the secondaries aren't, I was incorrect in my previous statement. Might have to have another bung welded into the x-pipe.

Either that or splice/tap the OEM sensor harness to provide for the LC-2. A Y adapter would be ideal in this situation.

[downtowncb]

My Jeep has 5 O2's with the two upstream, two downstream, and the wideband. It looks funny but it works great and made tuning easier; but tuning an LS engine is a heck of a lot easier since there is software like HP Tuners available.

[whats77inaname]

Originally Posted by downtowncb

My Jeep has 5 O2's with the two upstream, two downstream, and the wideband. It looks funny but it works great and made tuning easier; but tuning an LS engine is a heck of a lot easier since there is software like HP Tuners available.

For there life of me, I can't figure out why there's not an electrical resolution instead of a mechanical one, i.e., why no one has created a y-wire harness to split the signal received from the O2 sensor. Makes a lot more sense than having to put in an extra bung.

[bigjae1976]

I know in the E46, all 4 oe sensors need to be plugged in or the heater circuit won't function. I believe some people wired in a resistor to emulate the rear sensors. IMO...just easier and cleaner to weld in an extra bung. Especially when it comes to calibrating.

[M&M]

I've done this & it's a must. I put an LC2 into a bung welded into my X-pipe & wired it to my P3 gauge. Works extremely well & I have tested and it's very accurate. Here's a vid:

[whats77inaname]

Originally Posted by M&M

I've done this & it's a must. I put an LC2 into a bung welded into my X-pipe & wired it to my P3 gauge. Works extremely well & I have tested and it's very accurate.

Awesomeness! You might be getting some questions from me, but it looks simple enough. Nice job, sir, nice job!

[8600RPM]

Why not just log real time with bt tool?

[whats77inaname]

Originally Posted by 8600RPM

Why not just log real time with bt tool?

I use Torque (via Android), which can monitor a/f, but my preference is to have a dedicated display/wide band connection during certain situations that I'm envisioning in the future.