AEM FIC works perfectly

[cdydjded]

I want to thank battleversiontc for helping me out with my issues on the FIC. As of now I can say without a doubt that the FIC will works on the 07-08 Yaris. I have full control of:
Fuel
Timing
MAF clamping

Also through the built in gauges in the FIC I can view:
RPM
TPS voltage
MAF voltage
Injector duty cycle

The only input I do not have hooked up is the O2. I have no intention on modifying the O2 map so its no use to me. Any question Ill be more than happy to answer them......:thumbup:

[PETERPOOP]

hawaii tuner ftw

[mikenacarato]

what harness did you use?

[Tamago]

what will you do to combat your over-rich state once you go on boost? the stock ECU is not gonna like 12:1 AFR

[battleversiontc]

i never used a harness as i believe they still dont have one available for the yaris yet

[cdydjded]

what harness did you use?

I hard wired it in, as of today there is no PNP harness sold seperatly. Boomslang will have on avail in 1-2 months. They told me its going to run $400-$500. The only option with the PNP harnes is the EManage Ultimate kit from Trust Japan. PM me if you are interested in one, I can get it for you.

[Tamago]

please answer my question about tricking the stock ECU once you go on boost ;)

[cdydjded]

OK let stay civil today, I will clamp the voltage on the MAF while under boost, what that will do is not alow the cars ECU to add fuel. Then I will use the fuel map in the FIC to add fuel while under boost.

[Tamago]

OK let stay civil today, I will clamp the voltage on the MAF while under boost, what that will do is not alow the cars ECU to add fuel. Then I will use the fuel map in the FIC to add fuel while under boost.

and how will you tweak the o2 sensor to not show a 12:1 or richer a/f, thereby throwing a system too rich CEL ?


and i was being civil, i said please

[cdydjded]

My tuner Lance from Toyomoto will do his best to make sure that the A/F is not on the rich side....."OK let stay civil today" I said that to myself, I did notice the please, thank you

[cdydjded]

BTW Im not making this up, its the same thing that the TC guys are doing, I got this advice from AEM directly

[Tamago]

it IS the same thing the tC guys are doing. i suggested the whiny yaris owners to contact some tC guys like 3 months ago lol, glad to see someone actually did it.

btw Lance does some good work. i remember back in 2003 when they brought out their stock head vvti-equipped IS300 with 2JZGTTE block on STREET tires and stock IS300 exhaust run a 12 flat. at moroso. good shit.

[CASTREX]

Nice to see the people that actually know something getting along and bringing something to this "whiny" Yaris comunity... instead of loosing time bashing each other... :biggrin:

cdydjded I'm gald you got this thing to work.... FINALLY!!
this IS the option that many of us have been waiting... We will see a lot of boosted Yarii in the very near future.

Would you continue with your low budget turbo kit?

It would also be nice to see a BLITZ SC'd car properly tuned with a FIC so we can all know the real potential of that sc.

[cdydjded]

Turbo kit is coming, slowly but surely, update soon.......

[CASTREX]

cdydjded, you are running N/A now right?


It would also be interesting to see if you can actually gain some power over stock just with NA tune for premium gas and CAI+Exhaust.

I know many people that aren't planning to go to FI could be interested to make the most out of the bolt on mods they already have... :wink:

[eTiMaGo]

cool cool, this is encouraging :smile:

[Tamago]

cdydjded, you are running N/A now right?


It would also be interesting to see if you can actually gain some power over stock just with NA tune for premium gas and CAI+Exhaust.

I know many people that aren't planning to go to FI could be interested to make the most out of the bolt on mods they already have... :wink:

an FIC in an N/A application cannot make any power over stock, because you cannot ADVANCE timing with said unit. therefore you cannot take advantage of higher octane gas.

[CASTREX]

an FIC in an N/A application cannot make any power over stock, because you cannot ADVANCE timing with said unit. therefore you cannot take advantage of higher octane gas.

Forced induction it is then...! :biggrin:


I will need to start saving now..... again.
Turbotoyotas is working on a sidewind manifold for the 2ZR-FE engine and is looking some what promissing. :rolleyes:

[Tamago]

Forced induction it is then...! :biggrin:


I will need to start saving now..... again.
Turbotoyotas is working on a sidewind manifold for the 2ZR-FE engine and is looking some what promissing. :rolleyes:

they've been working on that for over a year, right?

[mrbond]

cdydjded, did you document your progress? You know, for other Yaris owners in the future that plan to boost their car?

[cdydjded]

an FIC in an N/A application cannot make any power over stock, because you cannot ADVANCE timing with said unit. therefore you cannot take advantage of higher octane gas.

Tamago is correct, the FIC only removes timing, only thing you could do it add fuel in a N/A application, the way to know if adding fuel makes more power with I/H/E is to dyno it, I have access to a dyno but Im only running an intake

[cdydjded]

cdydjded, did you document your progress? You know, for other Yaris owners in the future that plan to boost their car?

Yes I did, updates soon

[mrbond]

^ Excellent. I saw the HKS turbo kit Tamago showed in a few threads and everything in it is really appealing - minus the management. This is like the last piece of the puzzle.

[Tamago]

^ Excellent. I saw the HKS turbo kit Tamago showed in a few threads and everything in it is really appealing - minus the management. This is like the last piece of the puzzle.

why minus the management?

what's wrong with the HKS Fcon?

[mrbond]

Well, I don't know that it'll be 100% compatible with the USDM Yaris ECU, plus I want a management system that I have control over, not one that is pre-tuned and non-tunable (I'm assuming the HKS Fcon isn't tunable). If it IS tunable, however, then we've got no issue.

[Tamago]

Well, I don't know that it'll be 100% compatible with the USDM Yaris ECU, plus I want a management system that I have control over, not one that is pre-tuned and non-tunable (I'm assuming the HKS Fcon isn't tunable). If it IS tunable, however, then we've got no issue.

why wouldn't it be compatible? an ECU is just a computer that accepts inputs and processes them, then sends appropriate outputs....

[Tamago]

done hijacking this thread lol

[whooppee777]

(begins to consider putting s/c up for sale)

[Penguin Garage]

is the FIC capable of doing speed density or MAP instead of MAF?

probably have to go standalone for that one.

[Tamago]

is the FIC capable of doing speed density or MAP instead of MAF?

probably have to go standalone for that one.

the FIC has a Map sensor built in, and can ignore MAF completely. this is what MAF clamping is for.

[Penguin Garage]

the FIC has a Map sensor built in, and can ignore MAF completely. this is what MAF clamping is for.

ahh, I was hoping to remove it entirely.

Looking forward to more Engine Management progress.

Keep it up guys.

[Tamago]

ahh, I was hoping to remove it entirely.

Looking forward to more Engine Management progress.

Keep it up guys.

that's what the AEM EMS is for :biggrin:

[whooppee777]

u made this sound like an easy fix, if so how come cali yaris and his tuner couldnt figure it out?

[Tamago]

u made this sound like an easy fix, if so how come cali yaris and his tuner couldnt figure it out?

shhhhhhhhhhhhhhh don't repeat what i've been saying this whole time!

[cdydjded]

I know for sure what was Cali's issue, he had TC injectors & was using a larger diameter pipe for the MAF. So his car already had an issue when he installed the FIC. I dont why Richard could not figure it out, & Im not sure who was the other person.

[Tamago]

I know for sure what was Cali's issue, he had TC injectors & was using a larger diameter pipe for the MAF. ]

me too :)

[Jerkratt]

reading...

[Brad D]

Well a local shop has been installing the FIC's on a few 350Zs (much more complex ECU than the Yaris) and they seem to be fine.. in fact one just went 12.5 in the 1/4 mile last weekend.

Even the top dog ECU for the 350Z still has the stock ECU in place.. thats a haltech, we are just getting a 350Z going on one that we built a GT37R kit for.

Full AEM EMS would be nice but it wil be alot of work to install.

[mrbond]

So what's the update? How exactly did you get it to work?

[Tamago]

So what's the update? How exactly did you get it to work?

it involves resistors.. the tC guys had the same problems (07+) that were all corrected with simple radio shack purchases :) look up AEM FIC in the tC forums on www.scionlife.com

[saplaymate]

I love this thread

[CASTREX]

it involves resistors.. the tC guys had the same problems (07+) that were all corrected with simple radio shack purchases :) look up AEM FIC in the tC forums on www.scionlife.com


Tamago, I was looking into the resistors mod but it looks like the problems this mod fixes is a random misfire between 3k-4k rpm... Not quite the problems we've read here about the FIC.

I'm getting curious bout the FIC as I will be getting one soon...

My idea is to try to install it on the NA car and see if i can get it to work... If I do... I can start thinking about the FI possibilities....
Would this be a good idea at all? Try the FIC first on the NA car? My logic is that if I can get it to work NA, it should also work with FI.


cdydjded: Any updates on your progress?

[Tamago]

what was garm's issue? i thought it was missfiring.

[CASTREX]

Was it Garm?

[cali yaris]

I had a misfire and a blinking CEL above 5000 rpm, and the car wouldn't idle for more than a few seconds before dying.

[Tamago]

I had a misfire and a blinking CEL above 5000 rpm, and the car wouldn't idle for more than a few seconds before dying.

blinking CEL comes from misfire code.

what diameter intake did you have you MAF mounted in?

[cali yaris]

we tried 2" piping, that was too small, so we opened it up with some piping from a Subie (pretty sure), and that seemed to work pretty well, except for the problems.

[CASTREX]

...So the resistors mod could actually work to fix that misfire problem, but leaves the bad idle problem still to be address.

Well... will see how it goes.

I will attempt to install the FIC on the car NA. If it works then I will be saving for some real power mods...


Tamago, any inputs on how to get the FIC to work on my car will be highly appreciatted. :w00t:

[Tamago]

we tried 2" piping, that was too small, so we opened it up with some piping from a Subie (pretty sure), and that seemed to work pretty well, except for the problems.

most likely the bad idle came from an insufficient tune exacerbated by the odd MAF housing diameter. i had idle issues as well that i was able to tune out over a little bit of time.

[Tamago]

Tamago, any inputs on how to get the FIC to work on my car will be highly appreciatted. :w00t:

you want to buy mine? PM me.

[cdydjded]

Im 100% sure that Garms problem was the injectors that he had installed. Resisters are not needed. My problem was "installer" (me) hooked up some of the wires wrong the first time.

[Tamago]

My problem was "installer" (me) hooked up some of the wires wrong the first time.

we all did ;)

[CASTREX]

Im 100% sure that Garms problem was the injectors that he had installed. Resisters are not needed. My problem was "installer" (me) hooked up some of the wires wrong the first time.

So you got it running already?

And why would the TC (320cc) injectors be a problem? What would you advise instead? The OE injectors should max out pretty quickly after 5psi of boost or so...

[cdydjded]

You can only go +20% larger injectors without the ECU going crazy, its a common problem on newer cars

[Tamago]

So you got it running already?

And why would the TC (320cc) injectors be a problem? What would you advise instead? The OE injectors should max out pretty quickly after 5psi of boost or so...

1zz injectors are the answer :)

[CASTREX]

You can only go +20% larger injectors without the ECU going crazy, its a common problem on newer cars

That sucks... as it would limit the power badly.

I thought the +/- 20% was the amount of variance that the stock ECU could handle... but with a FIC I was expecting to be able to handle even larger injectors. At least that's what AEM says...

1zz injectors are the answer :)

Didn't you ran TC injectors on th xA as well?


I wonder if the TC injectors would be a good fit for the 2ZR-FE (1.8L) engine on a boosted application.

I haven't been able to find what the CC rate is for the OE injectors on this engine:frown: so I can't tell what is the flow difference.

[Tamago]

the issue with huge injectors and the FIC is that it really is not an actual tuning device. it's just skewing the stock graphs (+ and - the numbers going to/from ECU). this is one of the reasons that the FIC can be troublesome if not properly tuned (the factory ECU catches on to what you're doing and ruins your tune, unless you take proper volt clamping measures and spend a considerable amount of time either on the dyno or making street pulls and drives around town and on the highway in all types of weather)

and yes, i ran tC injectors on the xA with no real issues, other than things that were my fault to begin with.

i'd imagine the 360 or 370cc injectors from the 2AZFE (camry, highlander, rav4 and tC) would work great for you :) ..

[CASTREX]

I already have a set of TC injectors... that's why I'm hoping they might work.

I really want to have the management figured before I start spending money on all the custom stuff...

[changchewsoon]

hi, its interesting to see that you're using all the features of the FIC minus the O2 remap feature.

im curious to find out how is your STFT/LTFT doing? will be great if you could plug in a OBD2 reader to find out.

i know clamping the MAF and relying on the MAP is a common practice when it sees boost, how about partial throttle? because even during partial throttle there could be boost as well.

does it mean when the ECU is in feedback mode it relies solely on the stock narrowband to adjust air/fuel?