i need some wide band help

jpjackson · Post by **jpjackson** » Sat Dec 19, 2009 4:07 pm

i have a aem uego and hooked up on eld d10 and i have a -0.70 offset and at idle and cruising ectune readings and gauge readings match, but under wot and full boost ectune is only reading 12.10 afr while the gauge is reading 10.10 afr. and then going by my target afr,s and est fuel change it keeps telling me to add fuel in boost. do i have the offset wrong? should i try the egr input? is my guage shited out? what is the best wideband to use with ectune? thanks for the help guys!!!!!!!

thething96 · Post by **thething96** » Sat Dec 19, 2009 5:14 pm

Did you use the aem wideband voltage table provided by eCtune? If you did, the afr's are off. You might have to put values in manually.

jpjackson · Post by **jpjackson** » Sat Dec 19, 2009 5:46 pm

yes that is ectunes voltage conversion table. so if i use aems voltage conversion table it should work better? thanks dude i will give that a try

jpjackson · Post by **jpjackson** » Sat Dec 19, 2009 5:47 pm

one other ? is the egr input o-5v or 0-3.8v like the rest of the useable wb inputs

thething96 · Post by **thething96** » Sat Dec 19, 2009 7:05 pm

The reason I ask because on that screenshot, you show innovative as wideband input, and you don't have it enabled. You should be using aem wideband as input, and then enable it. I have my aem wideband using the stock o2 wiring. The aem voltage table in ectune is a little off. Don't have my laptop with me, if I get it soon, I'll post my table for you. If I recall, 2.50v on the wideband=14.50afr. 0.50v=10.0afr. Just play with fuel, and adjust the voltage settings so that both the aem gauge and the datalogging screen have same afr's. Aem wideband is 0-5v, but at 3.8v, my afr's are18.00...

jpjackson · Post by **jpjackson** » Sat Dec 19, 2009 7:51 pm

what u are reading is serial input( which i wish i could use) but i have it set up analog. and a -0.70 offset. i tryed using aems voltage conversion table but there are like 30 lines and ectune only has 12 so i put in like every second or third one and drove home and it was telling me i had to add alot of fuel accross the board in boost and i did and it felt like i picked up some power but also i have that tip in problem when i first stomp on it, it goes pig rich, it did it before, but now since i added fuel it falls on its face really bad, about to the point of stalling out. i dont know, ive had this aem for about 3-4 years now and ran it on my na zc with an afc for years so it might just be the guage and sensor its self. it would be nice if there were enoghf lines in the volt conversion spot to where you could put in the entire table and then it would be dead on.

Post by **calvin** » Sun Dec 20, 2009 12:53 am

should be the same table

Bindegal · Post by **Bindegal** » Sun Dec 20, 2009 8:25 am

Ideally your offset should be much closer to 0. If the table is indeed correct, you might be having issues with the signal ground for the wideband. /Allan

jpjackson · Post by **jpjackson** » Sun Dec 20, 2009 10:19 am

i compared the numbers and scale is a bit off, but i think my problem is like you said a bad ground or power, or my guage is just crap. which would be the best wideband you guys would recemend to use, ive read a couple of post, and people are knocking the aem and dont like it so which one should i get, and that will work best for serial data, i have a new laptop with win 7 on it so no serial port, i will have to get a usb converter. so which one????????? thanks for the help guys!!

jpjackson · Post by **jpjackson** » Sun Dec 20, 2009 10:29 am

should be the same table _________________

Calvin do you think you can make the voltage conversion table bigger, so i could fit the entire table in there instead of just 12 lines and breaking it up, i think it would work better, how bout you? i think all of the aem users would like that!!! i am going to try and rewire the guage though when my daughter takes a nap, eliminate the posibility of bad grounds.. thanks for looking into it calvin

Bindegal · Post by **Bindegal** » Sun Dec 20, 2009 11:21 am

Most of these tables are in fact linear (hence, just 2 data points would suffice nicely)...and even those who arenÂ´t can be input no problem. The manufacturer will usually show a graph of the voltage vs AFR table which should give you a good idea as to which data poiints to use. The true major problem with analog outputs from widebands is the sad fact that only a handful of manufacturers have a WORKING differential output. A differential output effectively means that the power ground (and current draw/noise from the car itself) doesenÂ´t affect accuracy, if connected properly of course. Without a working differential output (one ground for both power and signal-out), well your mileage may vary - depending on where you hook up the ground. /Allan

jpjackson · Post by **jpjackson** » Sun Dec 20, 2009 11:52 am

so where do you recommend hooking up the ground? I've had the wide band for like 4 years now so i don't really remember how it is hooked up. i believe that i have it grounded to the chassis and the power is hooked up to a accessory point on the under dash fuse box. do you know if anyone has had any luck using a serial to usb cable and hooking up the blue serial wire to #2 on the serial plug and ground on the #5 plug, and the using the serial input in ectune? i read a couple of forums about evos using it that ways with there software. but how will it work with ectune? is there a certain software or driver that i have to use? or will ectune automatically recognize it?

jpjackson · Post by **jpjackson** » Sun Dec 20, 2009 11:59 am

so what you are saying about the 2 data points is i can input from aem's voltage conversion table 0.00v=10.00 Afr and 3.74v=17.48 Afr it should work properly without having to input the rest of the table? in theory saying i have it hooked up properlly

jpjackson · Post by **jpjackson** » Sun Dec 20, 2009 7:10 pm

which wb do i need to get to run serial? i read a thread about people having problems with the lm2, is that connection problem fixed? what about the lc-1? it says it has a serial out to conect to the mts system, will that work for serial to my laptop and log in ectune? i think i am going to just get a new wb concitering my aem is like 4 years old, so i need to know which one would be best to get???????????????

b20beast · Post by **b20beast** » Mon Dec 21, 2009 9:25 am

i have good results with PLX i use Dm5+SmAFR