Apexi SAFC2 [VS] EMANAGE [VS] HKS AFR [VS] Anything else

[nikn]

i was wondering which of these would be better for fuel controlling.

...at...http://www.mvpmotorsports.com/...hYN=N

the SAFC2 is 349$the HKS is 231$the Emanage is 309$ + 37$ for injector harnessare these common prices or overpriced?

not sure bout this...the SAFC2 can change injevtor duty cycle by up to 50%the Greddy emanage by 20% the HKS by ???

The APEXI SAFC2 seems to have similar features to HKS AFC, and the emanage can always be upgraded...

any competitors to these? AEM EMS... ..etc?

which of these 3 is better?

to me it seems like the HKS is best for low-medium boost [up to 10 psi]

[red240ne]

safc 2's are 270 on ebay

curt

[SloMoe]

AEM EMS is a very good system, but there is no plug and play kit offered for the KA. Some other alternatives to AEM are stand-alones like Motec, Electromotive Tec3, and Haltech to just to name a few. These systems including the AEM are rather expensive, compared to piggyback systems like the Emanage and SAFC. If you only planning on boosting up to 10psi a stand-alone EMS is a little overkill.

[DriFt3r]

How about up to 15 psi? would these still be useful? And 20 PSI?

[nikn]

so what u guys know about the HKS AFR????? Can u run a Z32 maf with it?

[aleph1]

I found the HKS AFR for 205 shipped. Other than some minor differences, the HKS AFR and Apexi SAFC are similar, the reason the Apexi unit costs 100 bucks more is its fancy display.

[aleph1]

How about up to 15 psi? would these still be useful? And 20 PSI?

Short answer, NO.

They can only modify your A/F ratio -50%/+50% over stock. SO with either of em, you can run ~550cc injectors max. 20psi...that would prolly need 740cc or so.

[nikn]

u could try putting an extra resistor on the signal to the injectors. It would take some more time to tune... cuz u dont know the duty cycle...

[fastpace]

I don't know if you have seen this site, but hope it helps:

http://www.hksusa.com/products/more.asp?id=811

[C-Kwik]

Short answer, NO.

They can only modify your A/F ratio -50%/+50% over stock. SO with either of em, you can run ~550cc injectors max. 20psi...that would prolly need 740cc or so.

So far fromo what I've read, the limitation is not from the E-Manage itself. I am not as sure about the AFC. But you can set the parameters beyond the 50% limitation. But the limitations seem to be both the ability of the ECU to control the large injectors at low duty cycles. And secondly, issues of ignition timing. When you give the ECU a lower MAF signal to fool it, the ECU will think there is less actual air and will bump up the timing. Too low a signal can cause too much timing advance. The E-Manage can tunes some out, but I don't know how much the ECU would advance it. Too much of a correction factor may put it out of the range of the E-Manage's ability to tune the timing back out.

[cyrus240sx]

god damn... thats cheap for the hks afr..... im getting that instead of a safc2

[SSS]

SMT6 by Perfect Power.

[aleph1]

So far fromo what I've read, the limitation is not from the E-Manage itself. I am not as sure about the AFC. But you can set the parameters beyond the 50% limitation. But the limitations seem to be both the ability of the ECU to control the large injectors at low duty cycles. And secondly, issues of ignition timing. When you give the ECU a lower MAF signal to fool it, the ECU will think there is less actual air and will bump up the timing. Too low a signal can cause too much timing advance. The E-Manage can tunes some out, but I don't know how much the ECU would advance it. Too much of a correction factor may put it out of the range of the E-Manage's ability to tune the timing back out.

I should have specified that I wasn't talking about the Emanage, I don't know too much about it. But as far as the AFR and SAFC are concerned, in their features it lists that they can only modify it so much, could be because of the ECU or just the piggyback units themselves...or both.

As for my plan, HKS AFR and MSD BTM all the way. I like modular style, It makes me uncomfortable having something like an Emanage, not able to correct it easily on the fly and such...just MHO.

[C-Kwik]

The E-Manage says the same thing. As long as the SAFC and AFR allow a greater adjustment thorugh the controls than 50%, then there will be some motors that can handle it. I've heard of SR's running 720's and KA's running 550's on an E-Manage. Since all three do the same thing to compensate for fuel, it would be subject to the same actual limitations. I am just not sure if the SAFC and AFR are scaled to adjust more than 50%.

[huguetpj]

The SAFC won't let you setup more than +-50%, at least the II won't and I'm pretty sure the I also.

[bruinbear714]

There's also a DIY standalone called the Megasquirt. I might look into this something in the future and start mucking around with it. Can be build for under $200 with proper skills and knowledge

[C-Kwik]

The SAFC won't let you setup more than +-50%, at least the II won't and I'm pretty sure the I also.

That was what I wasn't sure of. But that sucks nonetheless considering that Nissan ECU's seem to work so well with the E-Manage. Chalk another positive point to the E-Manage.

[huguetpj]

Chalk another positive point to the E-Manage.

Definetely

[nikn]

since Emanage can only adjust up to 20% injector duty cycle, how would one go about running say 550 injectors with an emanage?????

[DSMs_Suck]

You will definately want more than +-20% thats not even enough to run 370s. With that said you would have to go with the SAFC or Emanage. Especially if you are just trying to keep a more mild setup with only 10 psi 370s will be enough for you and all of these piggyback systems will work just fine... The increase in timing would be minimal and if you want to correct for it just knock the base timing back a few degrees.

Also just as another option, voice your opinion http://www.nissaninfiniticlub....55794

[WDRacing]

Hacked MAF plus a piggy back...whatever brand you go with. I know a few guys who run a similer setup, not the same way you guys hack the MAF but with the same end result. Combined with the HKS AFR they were able to run 660's on there RB20's. Really good idle and it passed emissions. I was toying with that idea myself. Except with smaller 50lb primaries.

WD

[bruinbear714]

since Emanage can only adjust up to 20% injector duty cycle, how would one go about running say 550 injectors with an emanage?????

I think you misunderstood what the emanage can do... it can physically extend the injector duty cycle by a certain percentage, but to add bigger injectors, you punch in your old values + new values and it automatically scales the MAF output voltage accordingly, kapisch?

[C-Kwik]

To add to that, the E-Manage is limited to +/- 20 Percent only when you use the adjusments on the E-Manage(rotary dials) With the support tool, you open up a lot more functionality.

[nikn]

i get it now. thanks guys

that GM MAF setup seems interesting...

[spitz7985]

can you run a z32 MAF with an AFR/SAFC/e-manage??

[aleph1]

I dunno about the emanage, but the AFR and AFC, yes.

[bruinbear714]

can you run a z32 MAF with an AFR/SAFC/e-manage??

Yes you can run z32 MAF on the emanage, or the SR20det, or any other MAFs that are in the emanage.