crewchief264

the question has been brought up that a z32 maf can be used with the stock ecu? however I will be using stock 97 ecu, emanage (psi sensor, ignition/injector), 550 cc, no fmu, no adj regulator, intank 255lph pump.

If this mod will work with NO CODEs, NO FOUL UPS, ETC.. I would do it for the benefit of not having to possibly use the psi sensor to tune where my a32 maf would cut out, when I install the rest of these upgrades this spring.

I30tMikeD

iTrader: (8)

Yes, emanage can adjust for the Z32 MAF and larger injectors.....as far as a CEL I believe that guys get a CEL from the ignition harness. The ecu being a 97 makes no diff...that is only a problem with a JWT ROM tune not a piggy back system

DA-MAX

iTrader: (10)

you WILL get a CEL whenever you use Emanage...plain and simple. it won't affect performance, but the CEL will just be there, no big deal, just ignore it.

IceY2K1

iTrader: (3)

What code pops up?

I know BigDogJonx kept getting a ghost ignition code, but don't remember which.

DA-MAX

iTrader: (10)

PM him, he might remember. but if not I'll check tommorow or maybe Friday when I get back to his car.

mad-max98

iTrader: (2)

so if you guys get the emanage you don't need fmu cuz i just bought the sfmu vortech what else do i need to run z32 maf and 55o injectors

crewchief264

If you do emanage, and you do the 550 then you are correct you shouldn't need an fmu to raise fuel psi. The reason being is because the injectors can now flow 550 at the lower fuel psi, where as to get the same flow from the 240's you need to raise fuel psi. Now the emanage will tune the injectors for a very specific maf reading whereas with an fmu you are just guessing and erroring on the side of being rich to be safe. the emanage will allow for a much better a/f ratio for more power.

mad-max98

iTrader: (2)

so i made a mistake buying that thing now how much can the 240 run using the fmu is it 240 or can it flow more thnx

crewchief264

the 240 flow 240 @ Ibelieve a max psi of 41 I believe idle fuel psi is like 30-32 psi. So what the fmu does is if you have the 8.1 disc in it raises the fuel psi 8psi for every one lb of boost. I think some guys on here have ran the 2.87 pulley with the stock injectors but you must change discs and I think some of them were seeing like 90+ psi which is really bad on the injector (from what I've read on here and else where) and is near static. So some guys have gone to 370cc and then bought an adjustable fuel regulator (the thing on the end of the fuel rail) to turn down base fuel pressure and then used an apexi safc to tune the new injectors. however some guys have even maxed out the 370cc with the vortech and had to continue to use an fmu to raise psi near redline (especially with the mevi). So now most guys (ones with turbo) have opted to go emanage (due to far more capability than apexi) and then put in 550cc and use the emanage to tune the injectors and use no fmu and run the normal fuel psi with no need to over psi the injectors cause they can flow more.

Also on another note the a32 maf (stock maf) cuts out at 5v, which relates to the amount of power you make. So some have gone to the z32 maf which is also tuned with the emanage. (I give credit to all I said above from al the other guys/gals on the .org that have done these mods)

mad-max98

iTrader: (2)

thnx crewchief but why running 90psi is bad for injectors

crewchief264

90 psi is very close to making the fuel injector static or it over pressurizes it.

vortechpower

iTrader: (1)

Im running stock injectors with 3.12 @10psi

5spd99seL

High fuel pressure can cause injectors to remain open instead of closing properly (static). This is due to the fuel pressure being to great for the spring in the injector to close, the result is unpredictable and inconsistant fuel. On the other hand a higher fuel pressure is good for detonation purposes. A higher pressure spray from the injector causes the fuel to better atomize which helps to have a consistant flame front in the combustion chamber.

subs1000w

accually im pretty sure the injectors go static "100% duty cycle" when the maf reaches 5V "maxed out" then the fuel injectors no longer are closing at all and the fuel pressure needs to be raised to force more fuel through them

you can do a search and find this out or read about it here

http://www.shotimes.com/SHO4injectors.html

5spd99seL

[QUOTE]accually im pretty sure the injectors go static "100% duty cycle" when the maf reaches 5V "maxed out" then the fuel injectors no longer are closing at all and the fuel pressure needs to be raised to force more fuel through them

Static means not moving. I agree with what you are saying, but my point was to say that high fuel pressure can cause the injectors to remain open when thay should not.