Safc Neo

[drft_n_sc]

For those who are interested in installing the SAFC NEO, my buddy and I just installed one on his NA Supra and it was a breeze. It utilizes pretty much the same wires as the SAFC2, the only difference is that the NEO has a set of wires for the Karman sensor, and you don't need the knock sensor wire.

If anybody has question on how to hook it up, let me know. I will try to post pics of it installed.

[Dramon]

post a writeup? *wink wink*

[nyARISTO]

yea im intrested in that NEO also ... please please post up a write up

thnx
-Tony

[Archanox]

kick :P

[jzpower&associates]

yes post a write up please!

[98mkiv]

this thread has died, I know plenty of NA-T guys are running this on the OBD2 cars and some OBD1's, someone needs to do a writeup with all the pros/cons as well as install and tuning tips.

[skyline18]

cant say i can do a right up but i will tell you how my 1992 2jz lexus powered automatic supra runs with ONLY a NEO. 8psi stock injectors, and maybe sometimes on 13psi, stock fuel setup except upgraded fuel pump and a regulator.

letcha know if it stalls out or anything strange. later guys.

[skyline18]

APEXI NEO alone is running GREAT. only stalled 3 times after punching it and coming to a complete stop. otherwise it IDLE JUST FINE, and ran beautifully. omg fuckin amazing. i love my car. thank you guys for gettting me where i am today. whether you upgraded your old shit to new shit and i took your old shit, or you wrecked your car, or just flat out sold it to me i thank you. pics and vids soon. i kinda forgot how.

[lcsc]

Do you install the neo just like you do the safcII is there DYI write up? What do ou have to do different?

[brianwilson2525]

i just got a Neo and installed it, but i cant tune it for shit :(

[98mkiv]

do you have a wideband?

[brianwilson2525]

no, i have a VPC

[lcsc]

Is there a install writeup for the neo? I could sure use one. The book that came with it didn't help me at all. I have a sc300 5spd.

[98mkiv]

Brian you cannot tune without a WIDEBAND....

[brianwilson2525]

lol... figures.

[ishootstuff]

Is there a install writeup for the neo? I could sure use one. The book that came with it didn't help me at all. I have a sc300 5spd.

I installed a Neo in my NA 1995 SC300 Auto last week. It was really easy except there is no ECU pinout for the SC300 in the wiring manual. Its a little confusing because the manual refers to the Karman Vortex sensor as Karman turbo which the SC300 doesn't have - yet. You need to wire it as the diagram t-7a shows in the manual on page 20.
http://home.comcast.net/~ishootstuff/lexus/wiring.jpg

For your ease of reference, here's a link to the manual.

http://home.comcast.net/~ishootstuff/lexus/neo.pdf

Now... if anyone has some tuning tips for me that would be great. I suck. Yes, I have a wideband. I also have a question:

Using the Neo - or any piggyback - basically lies to the ECU. So if I tell it there is more air coming in than there really is, why don't the factory o2 sensors tell the ECU and figure out that I'm lying and correct what they would see as a mistake? Am I supposed to disconnect them?

It seems to me that when I adjust the mixture to be in the 12.5 range under load, the car is no faster than it was unmodified. Anyone else with an N/A got any tuning tips? I want to get the hang of this before I boost.

[lcsc]

Is 12.5 where you want it for NA tunning?

[ishootstuff]

Is 12.5 where you want it for NA tunning?

Between 12.5 and 13 seems to be the N/A consensus on the Internet. I'm looking for feedback from those who have a stock 2jz-ge and what they run.

What do you think? Too rich?

[lcsc]

I've been reading that you want about 12 to 1. But don't know for myself.

[ishootstuff]

I've been reading that you want about 12 to 1. But don't know for myself.

I was screwing with it today and I swear it runs best at about 10.5. Just for fun, I maxed out the Neo (50% all across the board) and the car just about died at full throttle. I run it about 30% from 2000 to 6000 RPM Hi throttle and I lean it out a little on low throttle so its low 14's for around town low throttle driving.

[Mr Ree NZ]

I just bought a Neo and a innovate wb02 last night so would be very appreciative of anyone who can shed any light on installing and tuning it. Im MAP based JDM though so im not sure if they wire in the same.I downloaded the pdf from apexi to check out the wiring diagrams too. Any help welcomed ;)

[insported]

Ok ive had my neo installed for quite some time now, and all i can really say is it gets the job done to an extent. I told mark i would try and do a little write up a long time ago but never got around to it.

Note: If your na-t (i believe it doesn't matter if your a na-t sc300 or supra since they both use Karmen?)and running the stock karmen maf sensor with a atmospheric bov like me your going to run into stalling issues because the neo will not correct decel air for Karmen maf's. Not as bad on autos as manual cars.

Hooking up the Neo is a zip all you need is a little wiring know how. Use the apexi booklet ecu pin out(pictured) for Karmen (if your na-t using the stock Karmen maf) and follow the wiring instructions(pictured) in the front of the booklet for Karmen wiring colors and then follow the actual setup/startup instructions(not pictured). Your done...

http://i186.photobucket.com/albums/x52/insported89/neopinout.jpg
http://i186.photobucket.com/albums/x52/insported89/neoecu.jpg

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Tuning is very simple all you need is a wide band to do so.

Currently i have my neo set up at these settings-
Pro Setting- Tunes every 500 Rpms, allows for more accurate tuning.

Lo throttle point 25% -- Hi Throttle point 45% (If throttle position is below 25% low throttle corrections will be in play, if throttle is in between lo and hi throttle setting a interval will be calculated between them, if throttle is above 45% hi throttle setting will be used.)

Key* (Rpm/ Percentage increased + or decreased - at current rpm)

(I kept the air fuels between 10.8 and 11.3 under hi throttle, but tuning will be different for every car)
Hi Throttle= 500/ 0, 1000/ 0, 1500/ 0, 2000/ 0, 2500/ +2, 3000/ +8, 3500/ +9, 4000/ +10, 4500/ +15, 5000/ +15, 5500/ +30, 6000/ +33, 6500/ +40, 7000/ +40, 7500/ +30

(I kept the air fuels between 14.0 and 15.2 for daily low throttle driving which wasn’t much of a change in corrections as you can tell)
Lo Throttle= 500/ 0, 1000/ 0, 1500/ -2, 2000/ -4, 2500/ -4, 3000/ -3, 3500/ -1, 4000/ 0, 4500/ 0, 5000/ 0, 5500/ 0, 6000/ 0, 6500/ 0, 7000/ 0, 7500/ 0


So as far as a write up this is about the best I can explain how I installed this and set it up. If you guys have any questions I will try to answer them as best as I can.

[ishootstuff]

Something must be wrong with my setup then because I had to correct around NEGATIVE 25% to keep the A/F leaner than 9.

Also, the Neo DOES supposedly correct for decel air. I have not had any luck getting that to work either, but in order for it to be available on the menu, you need to go into the VTEC settings and switch it to OFF. I could have sworn I did this on my initial setup, but when I did it again, the decel air feature was available. WARNING - this will force you to initialize the Neo which erases all of your settings, so jot them down.

[insported]

I have no idea why your car would be like that but i went through my whole neo and i have absolutely no way to correct for decel, i have a setting that is v/t and its off currently and when i try to turn it on it ask's something about map. Which i do not have. So currently i still know of no way to tune for decel while set on karmen sensor??

What kinda fuel are you running? Cause im on stock fuel.... that might be why our tuning is alot different?

[ishootstuff]

Sorry, forgot to mention... I am on stock injectors. Try selecting off again on the VTEC settings, that's how mine was too. If you get it stop stalling, please let me know.

UPDATE: I used the same settings "insported" used. My A/F was super rich (9.5 under boost), but the car ran much better than it has so far. Maybe my WB o2 needs to be recalibrated.