E-manage, any body got some info?

[SVOboy]

16:1 instead of 14.7:1

[Compaq888]

whoa, that's a little lean. I was thinking 15.5 at max.

How does this sound??? 15.5:1 up to 10% throttle, 14.7 up to 40% throttle, 13.5 up to 100% throttle???

[SVOboy]

16:1 isn't really all that lean. And 10% throttle might not even be cruising.

[Compaq888]

I'll talk to a tuner first and see what they say.

[Compaq888]

hit the 1/4 tank mark at 320miles. Which is a little high. Especially that i've been driving mostly street. I usually hit the 1/4 mark at 280-300miles and that is with mostly freeway.

I go faster now and drive the streets more and still my mpg is climbing. Things I changed during the mid of this tank... 1) new air filter, 2) New air hose, 3) front tires at 44 psi and rears at 41psi.

This tank should be high 27/low 28's. I think it's possibe to break 30mpg mixed without tuning. But to get to my 35mpg mixed goal I need tuning. I still have to run auto-rx, finish belly and put it back on, and do pcv catch can.

[Compaq888]

Talked to a couple of people who know their stuff. If I lean it out the ecu will just add more fuel to get back 14.7 a/f

The only place the engine management for fuel economy would be beneficial would be when the engine is in open loop when it's cold. So basically it's not worth it. If I had a standalone it would be a different story. But since there is still the ECU in the car it's hard to control it. The e-manage is tuned in 500rpm incraments but at least it will give better numbers in power than the safc2.

End of story.

[SVOboy]

How does the e-manage work that the ecu can still override it and run off stock fuel maps?

[Compaq888]

The ECU runs on closed loop. When you go WOT the ECU goes to open loop where it will listen to the e-manage or the safc2.

Closed loop is a sober chick
Open loop is a drunk chick. If you ever have gotten a chick drunk she will do mostly anything when drunk enough.

[Bunger]

That is true, after some time the ECU will make adjustments to the long term fuel table and "unlearn" your settings in closed loop. This is why chipping your ecu is far superior to a VAFC, SAFC, E-Manage, etc. Plus you can change your spark also, (I think e-manage might be able to do this now).

You could always reset your ECU every trip. =)

[Compaq888]

the problem is you can't chip a obd2 ecu. You can only reflash it. Nobody does reflashes to 2nd gen altima ecu. There are only reflashes to the 1st and 3rd gen ecu altima.