I have been working on trying to see if we can use E-manage to control our fuel needs under boost. I have sent a few emails and was able to find out that this is possible. Here is a response to one of my email's.
Question: Can the emanage control fuel in relation to boost?
Answer:
Nick, yes you can, it said in the manual once the maf/afm/map max out, the
e-manage will scale fuel based on the boost it reads..if you have turbo car then its best to get the boost sensor option from the start....
Mohd A.

So If this is possible and Emanage controls bigger injectors like they were stock, why shouldn't we all do this? The SFMU is better because its more reliable but it still has its mechanical flaws. This would also rid the need of a return line on 96+ cars. Some professional insite would be greatly appreciated.
TIA!
Nick

this would be great assuming its just changine the injector on time, verus changing the fuel pressure for boost

anyone know which it does?

I believe it controlls the pulsewidth of the injector, or I believe that is the same as the on time. I was looking into this option but I was worried about it doing the same thing with timing that the SAFC does. Granted you can pull it out with the same unit though. It does not have the stutter box capability though. You would still need the SFMU. there is a limit to how big the injectors can be with the e-manage, so you would still have to use a rise rate regulator.

with it self adjusting why would u need a rising rate i think a static regulator set at the proper pressure would work and it jsut changes the on time or pulse width of the injector as long as its big enough??

Also it being my understanding that the SAFC also only advanced timing at partial throttle because of the MAP voltage. The emanage will set fuel in regards to boost pressure not map voltage, also it does have a map lock on it and some aren't even using the missing link because it was causing problems. Using emanage's map lock they aren't having any. Im not trying to argue, just trying to understand if it will work affectivly.
Thanks again...
Nick

>Also it being my understanding that the SAFC also only
>advanced timing at partial throttle because of the MAP
>voltage.

Not real sure what you mean here, but the SAFC messes up the timing b/c it's feeding the ECU an incorrect (adjusted) signal from the MAP sensor, so the ECU adjusts the timing for the level that it sees.

> The emanage will set fuel in regards to boost
>pressure not map voltage,

MAP voltage is the boost/vacuum signal from the MAP sensor. Therefore, the boost pressure and map voltages are essentially the same. However, our MAP sensor will not read boost. That's why you need to get their MAP sensor.

>also it does have a map lock on it
>and some aren't even using the missing link because it was
>causing problems. Using emanage's map lock they aren't having
>any. Im not trying to argue, just trying to understand if it
>will work affectivly.
>Thanks again...
>Nick

I appreciate the replys.
You just posted everything that i wanted to post above, but it just didnt come out right}( They do have a 3bar map sensor. But, they also have a Boost sensor, different from their map sensor. I am talking about calibrating the e-manage against the boost pressure that it senses, not the pressure of the map sensor which results in map voltage, which then advances timing because its tricking the ecu.
This would only enduce more fuel once boost is present.

Nick

I would personally stick with out MAP and the missing link...and then choose the boost sensor, that is if they are seperate (ie. there boost sensor isn't a MAP as well)! If so then you would be able to adjust fuel by boost pressure, however I've not personally had a chance to look into this system. Even though I'm pretty sure I'm going to buy it!

BTW, if the guys are running the missing link and a stock MAP and using the SAFC to tune, that would explain why it's reading wrong. If one is going to use the SAFC shouldn't they get rid of the missing link?

You guys are confused.

As stated MAP=PRESSURE, PRESSURE=BOOST. 3-bar map sensor = 'boost sensor'.

You still need a rising rate regulator.

E-Manage is still a modified signal so same cautions to timing apply. USe it for fine tuning. Match your fuel pressure and injector size correctly in the first place to avoid any serious issues.

The missing link is still useful to save your stock map sensor as it is still necessary for your car to function properly. Your stock map sensor reads voltage no matter what you do and the extra pressure on it is always bad.

My setup:

E-Manage, 1:1 fpr, 525's, missing link


Oh, and a search would have let you know that there are a few people already using the emanage with some rather long threads discussing it. ;)

I agree.

I have the emanage as well (everything except e01). The fuel injector pulsewidth control does not provide you fuel. It allows you to fill in the gaps that your rising rate regulator cant fill.

I currently have 270cc/min injectors with 1:1 regulator and using the injector map i am able to control my 270's up to 8psi.

Now there is a caviot, i am reaching about 85~90% dutycycle. Thus that is why i am installing super-fmu to give me the right rising rate with those injectors.

Emanage kicks ass. I just need to bug james to figure out how to get the ignition harness working hehe =)


I also have the 3-bar map sensor working. Basically that allows you to base everything off your 3-bar sensor.

_________________
Vinnie Lima
vinnie.lima@jvllogistics.com
AIM: Kiku888
1997 Chrysler Sebring "Silver XTC"
I4 420a w/ HRC Stage 2.45 w/ FMIC
14.7@97 mph@6psi
Proud member of the
ASOG BoOsT JuNkIe Crew

Ultimate thread about the e-manage. Thanks Jamesman :thumbsup
http://forums.2gnt.com/dcboard.php?az=show_topic&forum=8&topic_id=37540


95 Eclipse RS : 5 speed
Jeep TB writeup - http://www.dimensia.com:81/jimbo/JeepTBfor2gnt.html

is there any such thing as an eletronic fuel pressure regulator? like some sort of very fast reacting servo that puts more pressure on the return line to increace fuel rail pressure? sounds like an awesome idea to me, that way one would have complete control on what fuel pressure they have at X boost level.

yeah that would be sexy, if it could respond quickly and be reliable.

Not to dredge up an old thread...but I remember reading ner's question and thinking at the time - I don't think so.

But it looks like I was wrong. I was surfing for returnless fpr info(for a completely unrelated issue) and found this unit from Aeromotive. http://216.242.145.16/products/product.phtml?p=32

It's a digital FMU built for returnless systems. It lets you pick the pressure at X boost. It's not a pump, but basically it looks like it does what you were wondering about - let you tune the boost curve however you want to, almost like a graphic equalizer. For the 96-99 models you wouldn't have to run a return line. It is expensive though - $400 at Summit. http://store.summitracing.com/default.asp?target=search.asp&type=bysummitpart&searchtype=both&part=AEI-16303


95 Eclipse RS : 5 speed
Jeep TB writeup - http://www.dimensia.com:81/jimbo/JeepTBfor2gnt.html

its a very nice unit i checked it out once before but the price drove me away...