Safc
 

okay mods i am really really really sorry if this has been asked a million times...

but i just caint find the thread for it...

whats the go with this?? i read that they caint be installed on our cars... (mine is a 99model)... or canthey be installed???

and if i do have to get a stand-alone system... what would u recomend??

thanx and once again i am sorry for posting this..... but i just couldn;t find the other threads on this

Use key words like 'Stand alone' or Haltech.

No piggy back available that is effective. The Rod knows the most about it (AFAIK) he says 'get the Haltech'.

Or if you are staying n/a - get a MP3 ECU and do a swap. Bear in mind - we all have the same idea!! Me First! haahaha.

please dont give out false info...he has a 99, so he either has a 1.6L or 1.8L...either case an MP3 ECU will not work.

Also why is it that everyone always assumes Matty is the only knowledgeable member on this board ??? Piggybacks are inneffective. Here's Why.....

Mazda ECU's go into "open loop mode" at full throttle. This means that they deliver fuel based on preset values based on RPM's...Piggybacks simply alter signals from sensors, and since the ECU isnt using sensors to meter fuel at full throttle, this renders the piggy back useless. A standalone fuel computer like the Halteck F10X takes fuel control away from the ECU, therefore will work.

Maybe because you "only" have 2100 posts, lol.

Anyway, Matty has a bigger mouth.

Don't wory, mac, you still have my respect.

Ha ha...jeez.

Mac has helped me out a few times also...I know whos brain to pick when I need certain questions answered...I guess because only a few speak up.
You, Flyin', Matty, Karen, Kargoboy....there are few others too....like dudeonthecouch etc....It's all about who's more vocal I guess. I didn't join to compete in a popularity contest...lol...But, I just about talk w/Mr. Matty everyday so I guess that's just me....plus he's the only person I know w/a modified/supercharged P5 in 'Bama...and one with common sense and the knowledge to spread it with me...soooooo
:evilgrin:

yeha, I'm not smarter I'm just louder!!

p.s. My pupil JohnnieblkDX just schooled me in some wheel knowledge!!

p.p.s. Macdaddy is right. The ECU tends to learn around piggybacks. Even with the haltech that I recommend (first hand experience with it) you'll have to cut and bypass the ecu's memory wires.....the problem isn't the device you use...it's the ecu you're trying to use it on!

i got the 99.. 1.6L model....

i i put in a catback exhaust system... and in the process of puttin extractors and CAI into it... good friend of mine also suggested next step is maybe to put in a fuel/airflow comp inthere....

so the SAFCII will only be useless full-throttle??? hummm looks like haltek it is... might have to look more into the SAFCII.....

damn mazda... i knew this car had some sorta catch to it heheh

thanx for ur help :)

Mac! Peace. And you were right about my glib answer before checking his sig. [My Bad]

I am glad we have more than few experts - i h8 to have to rely 'only one correct opinion'.


I just have to wait a little longer before i become 'intelligegert', uh i mean 'intelligennt', uh, i mean 'smart'. Yeah. Smart.
"...If I only had a brrrain..." [Thus Spake 'The Scarecrow' - Wizard of Oz]

LOL guys sorry to trouble u again on this topic....

{QUOTE}
Mazda ECU's go into "open loop mode" at full throttle. This means that they deliver fuel based on preset values based on RPM's...Piggybacks simply alter signals from sensors, and since the ECU isnt using sensors to meter fuel at full throttle, this renders the piggy back useless.

so the ECU will ignore the signal from the sensors (AFM i assume) only @ full throttle??

does that mean the SAFC is effective till its @ full throttle???

i dont intend on gettin it but just curious.. and trynna explain to a friend why i caint have it ehe

thanx

You race at full throttle. So the SAFC won't help WHEN you need it 'most'.

OTH, it makes us prime for a 75 shot dry NOX (unlike other cars! ;)

Hehe, try driving around at partial throttle and see how fast you are !! :bt:

I actually thought about this and wondered what would be involved with wiring up a resistor of some sort on the signal wire of the tps. This would allow the TB to open fully but not signal the ecu to switch modes.

Maybe Vielster will chime since he's an EE.

ooo i am listening.....

p.S i am studying electronics engineering now @ university LOL.... and am very interested to learn stuff bout ECU;s etc etc...

or should i just save my money and get a power FC

bu i got offered an SAFC for free so i just took it...

i dont wanna put it in till i know for sho how i can make it work properly.. so yeh

Only issue I see with that, is that is the ECU only see's partial throttle, it's only going to give fuel for partial throttle...So if you are getting ALL that air from a wide open TB,you likely would lean out severely, and we all know that's a recipe for disaster

not really,....the ecu may not be giving it full fuel but we all know it's horribly rich to begin with and the S-afc would be able to still alter the signal with more fuel if needed. Remember the AFC works until you activate WOT, then it's input gets shut out....if you never reach WOT then you're still free to alter the signal as you want.