hey as far as i know the setting for the 2001 maxima's maf on the emanage is a hw-17, well i got to looking at the rotary switches and it doesnt quite go that high, if anyone knows what setting you are supposed to use on a 2001 please let me know just to make everything clear it is a 3.0l and it has the factory maf in it.

 

5th gens with older firmwares are using 7-0-1(Z32 MAF), but if you have the latest v1.39 version(not including GOLD), then you should be using 7-0-B(Z33 MAF).

 

so is that actually a different mass air flow sensor or just a setting that will work for our cars?

 

Just the setting, however it only makes a difference during startup and open-loop air/fuel ratio. Otherwise, the 02-sensor feedback to the stock ECU will correct the AFR.

 

sorry to be a bother but what kind of start up problems, rich or lean? and also wouldnt that create a problem during wide open throttle then?

 

Both your questions depend on the Z32 vs. Z33 MAF voltage vs. airflow curve.

Just imagine something like this, but with 0-5V on the left and airflow(lbs/min) on the bottom.


Selecting the Z32 or Z33 could shift that curve a bit, which could mean rich or lean depending on the factory programmed injector pulse-width. In other words, I'd choose the Z33 MAF curve profile and then correct the AFR on the dyno.

 

oh ok i got you. so if i change the fuel say if it was rich in open loop, and i wanted it stoich i could take fuel out and not have to worry about it running lean in closed loop due to the o2 sensor input.

 

Yes, however you don't want it anywhere near stoich(14.7:1) for open-loop....NA ~13:1, SC ~12.5:1, TC ~12:1 roughly.

Your ECU will override your eManage changes during closed loop to hover around stoich.

 

alright cool
you do know that i am talking about the rotary switch though right, i am using the manual for the safcII to get the sensor number to set on the rotary switch, and the number for the z33 maf is hw-26 the number for the a33 maxima is hw-17, that is why i am lost i thought that you are supposed to use the number after the prefix hw. please explain, i am new to the emanage, i had a safcII but then i heard that it is alot easier to go to bigger injectors with the emanage plus you can control ignition timing. and yes i know that stoich is bad under a load typically you want it to run a little on the rich side like 12:1 or somewhere around there.

 

Yes, the FIRST three ***** need to be setup for 7-0-B(7 = 6 coil on plug, 0B = NS_HW-12):


http://www.mohdparts.com/emanage/pc/....39/index.html
http://www.mohdparts.com/emanage/EmanageFAQ.txt

http://www.mohdparts.com/emanage/ins...age_wiring.pdf

eManage Manuals:
http://www.mohdparts.com/emanage/index.html

 

BTW, you MUST have v1.39 firmware and v1.13 of the support tool for 7-0-B to work, otherwise you'll need to use the 7-0-1. You can upgrade on mohdparts site.

You have the support tool, right?

 

its in the mail on its way here, i was just trying to take care of the prelem stuff so that when everything gets here it will be ready to install

 

should i install it into the car set on 7-0-1 upgrade the firmware and then open the main unit back up and change it to 7-0-B or can i just put it in as 7-0-B at first anyways?

 

Good question...not sure if it makes a difference.

I'd set it on 7-0-B and leave the eManage hanging loose just incase.

 

Also, what injectors are you planning to run?

 

prolly 370cc with a walboro 255 lph fuel pump ive heard that that is a good combination... my car is going to be turbo very soon and i just dont believe the stock injectors will stand up to 10 lbs of boost all that well. what size do you reccomend for that amount of boost? im just afraid that i would burn some stuff up trying to run such a high fuel pressure and increasing the pulse width so much on the stock ones. also what kind of fpr would you go with?