Rep Power: 0

Most people seem to go with the FMU rather than an additional injector controller setup. IMO, this AIC setup is far simpler and you will be able to fine tune the fuel settings whereas the FMU is more limited. Intake temperatures are lowered and also AIC units can account for RPM adjustment as well, creating a richer environment under high revs. So why aren't people using it. That is the way I'm going, just getting a bit nervous that I am going the wrong way about my setup. Also, does the OBX manifold suck?

 
Rep Power: 326

The OBX manifold does SUCK.

As for that fuel system, never heard of it before. Have a link?

 
Rep Power: 0

link.. lol its called NE FUEL MANAGEMENT.
99% of piggybacks,ecu replacements... etc... have settings for extra injectors. Yes it is easier to tune, etc etc etc.

A. you need to find a place for them ie. intake charge pipe, intake manifold,

B. you need something to control them. emanage, hondata, aem em.
you also need to remember that we have a returnless fuel system.
so its not as easy as putting a FPR and calling it a day ya know.



best bet is do a return system and just get Bigger injectors. not more.

 
Rep Power: 0

I know we have a non-return fuel system. It;s just that most of the JDM guys use this method, and to me it also makes sense. This is the the most accurate way to tune your fuel curve under the WOT condition in comparason to a FMU setup. In fact, the only way to tune your fuel curve is under WOT conditions with our OBDII ecu. Sure, you might need to addd a couple of injectors in the intake stream, and beef our your fuel pump, but I'm 100% positive IMO that this is the way to go. Anyone else have anything to add or to rebute?

 
Rep Power: 0

And also, with this setup, your won't need a retun system or a FPR. Simply beef up the intank pump and feed the secondary injectors direct from the fuel line. In non-boost situations the main intectors will feed normally due to the injectors feeding to achieve a 14.7:1 a/f ratio by instruction from the O2 sensors. Under boost or WOT, the O2 sensors won't care what ratio you're at and thats where the AIC comes in to play which will feed whatever extra fuel you set it to(ideal 12.5:1).

 
Rep Power: 0

I have been running an additional 460 injector controlled by a Haltech F5 for about two years now, and have never had any problems. The a/f ratio is a perfect 12.5 all the way to redline at wide open throttle, and my cold start, partial throttle out of boost, and idle are all as perfect as stock, because the additional injector only kicks in when the car is in boost. I have not upgraded the stock fuel pump or the stock injectors.

Both this and using RSX injectors with a v- or s-afc will work, but you'll have better fuel economy, better cold starts, and better idle with the additional injector system.

That being said, the best of all worlds is to use larger injectors, no additional, and have a computer that can tune well for all driving conditions. The AEM EMS can do this, the e-manage seems to do very well, but the s-afc and v-afc just are not adjustable enough to prevent some partial throttle and idle problems.