edwin-82/rx7

iTrader: (1)

I can't get consistent readings off of the 0-5v output and it's driving me nuts! Comparing the display of the gauge and the watches I have set up on the laptop, it seems that it's anywhere from .5 - .3 leaner on the watch I have set up in FCedit.

So far I've tried different values in the auxiliary setup in FCedit, ranging from the values pulled from the manual (0v=10 4.25=18.5) to my current 0v=9 and 5v=22. I also have another ground wire ran from the UEGO harness to AN2 on the datalogit, and have selected "Delta AN1/AN2" in the auxiliary setup as per the tutorials I have read.

At idle under the current settings, it logs ~.5afr leaner than the display. Sometimes. At WOT and ~10psi, it seems to log .3-.5afr leaner. Which is good I guess, since I'm using correction tables and it's just going to end up a bit richer than I want... safety. The gap seems to be so inconsistent and I feel like it's going to throw my corrections off. Already I have a few rich/lean conditions in the normal driving ranges that I'm sure were caused by the seemingly random gaps thrown into my tables.

I don't know what to do. For the $223 I paid, I feel burned by a product that doesn't seem to work as advertised. With the values from the AEM manual plugged in and using the 'recalc log' checkbox in FCedit, it seem to log almost .8afr leaner that what I remember seeing on the gauge.

The "close" (call it .2-.5afr) values that I'm getting now are... workable, since it's on the rich side, but for christ's sake is accuracy too much to ask? Sorry for doing a bit of venting, I just wanted to know if anyone has any tips. I've searched to get the results I have now, but I'm just not happy. I don't feel like I can trust my motor with this.

arghx

iTrader: (3)

I've never seen it read properly on a Datalogit. I was tuning an SR20DET power FC about two months ago and the guy had an AEM UEGO. Even with Delta AN1 - AN2 it was always off by at least .2 AFR.

If you are interested in selling it, I have a friend who may be interested in it for a non Rx-7 project.

DaleClark

iTrader: (55)

I've never been pleased with the AEM widebands. They're a crapshoot for reliability, and they're just not that well designed or made.

Go with the Innovate LC-1 and DB gauge. It's dirt cheap, dead reliable, has a solid 0-5v output and a simple, clean looking gauge.

Dale

oo7arkman

iTrader: (2)

+1. I had the AEM originally, did lots of reading before I installed it and sold it due to reliability issues and evidence of losing accuracy at low AFR's. I picked up the innovate and could not be happier. XD-16 is also worth the money, very easy calibration, data logging and its even pretty easy to connect to the datalogit.

edwin-82/rx7

iTrader: (1)

Thanks for the input, guys. I was looking at the LC-1 today and it seems be favored, and the price of the DB gauge and LC-1 seems reasonable. Doesn't look like it comes with the serial cable, but amazon.com seems to have that. Then again I might not have to program the LC-1 if the voltage range is in the manual?

It's my own fault for not reading and doing some research, but I guess I learned my lesson. Does the AEM actually work properly on other dataloggers?

arghx check your pm's. Thanks again.

serbRX7

iTrader: (9)

i have AEM wide band on my car it works just fine... just make sure it welded in right after turbo about 3" and 45 angle ...



if its to far from the turbo or welded straight on top..you wont get accurate readout... if you got that part down... you need to calibrate it...

i also use AEM true boost with no problems...

Fleemer

my AEM wideband seems fine. and i also use a trueboost

The funny thing is, ym friend has an LC1 and his just crapped out, adn i've had mine in for 2 years and him only 6 months :P

arghx

iTrader: (3)

the LC1 can be a pain too. I think my next permanently installed wideband will be a PLX

oo7arkman

iTrader: (2)

Installing the O2 sensor that close to the turbine with thrash the sensor in a short period of time and is against manufacturer install recommendations. It should be mounted 36in from the turbo before the cat. <--Per AEM (in the instruction manual) for accurate readings and sensor life. This is true for all widebands.

The LC-1 does have its own unique set of problems but also seems to be a better quality product. Main tricky thing is make sure you have a good ground connection for the sensor and the xd-16 gauge.

siguy2k

iTrader: (3)

Ive read that alot but so far have found it untrue. Ive had my aem installed for over 2yrs and the sensor is only maybe 10in from turbine. Accurate readings compared on dyno last time. Most difference was +/-.1 a/f. Same sensor I started with 2yrs ago. Nothing wrong with it so far. Knock on wood lol. Thats just my experience.

arghx

iTrader: (3)

I've had the Innovate and the AEM. I think the Innovate is prone to burning out sensors (I've killed multiple sensors). I suspect it has a very aggressive heater control strategy.

serbRX7

iTrader: (9)

36" from turbo my ***...watch this video...and pay attention when he shows where the censor is welded in and why it needs to be at an angle....

http://www.youtube.com/watch?v=ivOtfoY8P2Y

you wanna it working right you do it the way i did...

the sensors need to be changed every xxxx miles any way...if you get one the car like i do...i would change it every 2000 miles or onces a year... if you drive around normally it can las you a very long time...

there shouldn't be much difference in brands you go with as they all use Bosch LSU4.2 sensor...

arghx

iTrader: (3)

Trust me man, the Innovate is by far the wideband most prone to burning out sensors even though it uses an LSU sensor like most other systems. The heater on a wideband is duty controlled unlike the stock unheated 1 wire narrowband or your typical 4 wire narrowband on a newer car. The only explanation I can think of is that the Innovate units run the heater much harder.

Subarus have factory widebands (not LSU sensors) and many models have located before the turbo. They don't burn up.

Outkast187

I ran the AEM in a few cars with good luck. I dont ride around with it in the car daily like some people, since its not needed. I used it to tune, it worked, and then it was removed. No issues at all.

serbRX7

iTrader: (9)

i cant comment on Innovate wideband as i never used it....only thing i know about them is that they use BOSCH LSU as most others widbands.....

all i wanted to do is to show how to properly install AEM wideband in rx7 so that you get good readouts...thats all