^^ How To: AEM F/IC-6 Install, Tuning, and Help Thread

I just installed an FIC 6 after installing the SC a few months back. Im very familiar with ECMLINK which I use to tune my DSM. This FIC isnt nearly as powerful but it gets the job done. For the price it cant be beat. Still playing around with it and smoothing things out but I can say that there was a lot left on the table before I had a way to dial it in. Pretty sure I will always avoid the load factors that where gurenteed knock, just like before the FIC, but at least I can do WOT pulls now and feel good about what my WB is telling me through the pull.

 

As of today, the setup is:

-5VZFE SC
-I kept the stock air box w/ KN filter up to yesterday, just switched to AF Dynamic kit. For the $ its great, and for a SC setup, may be better as it keeps the heat away to some degree still
-312cc Toyota/Lexus plug n play injectors
-JBA ceramic coated headers
-Devils Own Methanol injection #5 nozzle pre TB with their progressive controller
-2.5 inch exhaust from headers back, to a magnaflow catback, both cats still in (I cut back on the taper of each cat to the point where the entrance and exit to both cats is 2.5 before I fitted and welded it all together.......hope that makes sense typed out). 2 new O2 sensors as well.
-2.1 Pulley-I see about 11psi at WOT

I have an AEM wideband and I use the "Torque" app to moniter ECU parameters. The setup is complete as far as parts...........for now. I have zero doubt that I should have gone turbo, unfortunately i put way too much stock in what some of the leading vendors spout, when I should have just stuck with what I know how to do. The setup is fun though. I will get bored with this quick and the sale of some of this stuff will easily pay for the turbo setup down the road.

Anyway- I think something may be up with my o2 skewing. I changed to "voltage" in the O2 map and held it at 2000 rpms just as the AEM video explain to do as you build your table to figure out what voltage will produce what AFR..........but the voltage changes dont seem to do any thing............. at all..........whatsoever. Maybe I need to re-examine my hardwire job on the FIC-6, however, Im pretty sure I caught all of the snags as I went over the table that the OP created here, which was very helpful, and as he pointed out more than once in this thread, was way more than he had to go by when he installed his.

This is a 2004 Tacoma 5vzfe wideband ECU

Any input on this would be cool.........so quiet in here. I will get some pics to add some character to my posts in the coming days, and will try to be more active on this forum and add in whatever may be relevant to you guys on this setup.

Thanks! Jason

 

You and me both on the o2 skewing. I basically just put values in until I get a change in a good direction, no set tutorial on making tables has worked for me either.

 

Maybe the sensor is an AFR sensor and not an o2 sensor?

 

It is an AFR sensor- thats what I meant when I said its a "wideband ECU"

Wideband = AFR sensor
Narrowband= standard O2 sensor

My truck is a 2004

Shorman- Your sig. says you have a 04 as well so it looks like we are dealing with the same system.

 

I think yours is a little different than mine, but sound like your results are similar.

If we dont get this O2 skewing thing working, then it seems all the changes we do make to get things going in the right direction are temporary, and far from repeatable. When I make changes to the fuel table, its clear that the change is there but it doesnt last. Sound about right? Of coarse this can be explained by doing a little reading on the system and how it works. Need to get to the bottom of this.


Im still not sure exactly how this thing works- at first I was thinking the o2 skewing was for closed loop operation, and that the fuel table was for open loop. Im not so sure thats the case now. This is the most obnoxious ecu Ive been involved with so far. Id like to get this to work while only making changes to the O2 map and the fuel map. I had a few degrees of timing pulled in a couple spots but have returned it to zeros since the addition of the methanol.

Is there anyone out there who has solid control over the fuel system with this FIC 6 on the 5VZFE??
I mean solid repeatable day in day out control that they feel good about.

 

Right. I was referring to the fact you’re using a setting called “o2 skewing” on an AFR wideband.

Maybe that’s just what AEM calls it for both. IDK.

 

Do you have an FIC 6?

Wish thats what i was doing wrong man!!

 

well to a certain degree there was no effect until I subtracted or added a large enough value. I have a narrowband so it is a bit more drastic, but after adding or subtracting .5 volts I see decent changes. (0-1v range vs 0-5v range)

 

Exactly- Im on 0-5v range and dont seem to have control over anything as I input any value between 0-5v in the table, globally, at a given RPM. Something is up. Hoping its in my wiring.

If this works the way it is supposed to, it should be perfect.....Id love to hear from ANYONE who has solid control with the newer style wideband 0-5 volt factory oxygen sensor (Example: 2004).

 

I have the 7th. But I have seen somewhere that there should be a option for an AFR sensor I believe.

 

are you in offset or voltage mode? if voltage try offset.

 

voltage mode- I will try offset.........man I hope that works

you think it will? voltage offers 0-5v which makes sense but does nothing.

I will try this as soon the sun comes up and report back! haha


sorry i like to come back and ninja edit

 

https://www.tacomaworld.com/threads/turbo-bs-thread.481844/page-507 also try this thread instead

 

wow over 500 pages in 2 years. maybe I should copy and paste some of this over there, but who knows maybe the offset setting will do somthing. Thx!

 

give it a shot and see what happens. If not there are several wideband first gens there.

 

Gave it a shot this morning Brice, no dice. I am now noticing that on the FICs software display, my #1 O2 sensor, which is the one that I need to skew, seems to be locked at 3.27v. #2 displays a constantly varying value as it should. #1 does not move regardless of driving conditions,rpm, or throttle position. The voltage readings on my OBD2 software direct from the ECU for #1 are values that make sense, and fluctuates as it should.
So from this, I can deduct that there is an issue with the signal coming into the FIC for this sensor, or an issue with the FIC itself. For now Im going to hope its the wiring.......maybe I tapped the O2 heater line rather than the reading line? Not sure what could explain the constant 3.27v.......maybe thats what the heater runs on? idk, just trying to make sense of what Ive got here. Gonna go play with the wires a bit later.

 

Just to be clear there is bank one sensor 1 and 2, no bank two. the post cat should fluctuate like you said. You used the correct ecu pinout in wiring right?

 

I went to that site (forget the name but from this thread) and paid for the temporary membership so I could download what I needed. I felt good about what I went by in the end......but there was alot going on with the wiring so I could easily have made a mistake somewhere in there. Havent gone over it since the install. I depinned all the unused wires from the aem harness and mounted the fic behind the pass kick panel. Fits perfect in there. Gonna have to pull it out through the firewall and go over everything to make sure its good.

 

fixed