E-Manage vs. Ultimate E-Manage vs. Rtek
#4
Chillin
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depends on current and future upgrades..
each rtek ver is for different configurations ie 720 sec ,,, 4x720 inj what type of upgrades you have etc.
I have blue e-manage and want to upgrade to Ultimate since of the AFM elimination feature and each pri or snd injector map modifications. Also target AFR map for beginer tuning.
Ultimate for ultimate future proof upgrades.
Rtek if you are happy with upgraded system that you do not want to tinker with. and go beyond what it is specd for.
Blue e-manage if you are on a budget upgradable solution.
each rtek ver is for different configurations ie 720 sec ,,, 4x720 inj what type of upgrades you have etc.
I have blue e-manage and want to upgrade to Ultimate since of the AFM elimination feature and each pri or snd injector map modifications. Also target AFR map for beginer tuning.
Ultimate for ultimate future proof upgrades.
Rtek if you are happy with upgraded system that you do not want to tinker with. and go beyond what it is specd for.
Blue e-manage if you are on a budget upgradable solution.
#7
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Originally Posted by BlaCkPlaGUE
SO i guess emanage has finally moved into the real of standalone? is this correct?
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#9
Rotary Freak
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sorry for the thread revival but....
i have recently purchased an emange ultimate to go on my turbo. i've been reading the operators manual, and i guess to eliminate the AFM, you need to program in a load vs. voltage base map for it to work. i also believe that i will not work on some cars. i guess i'll be the guine pig if i ever get my car together. i'm also not sure as to wether or not you can use a standard wideband to utilize the self tuning feature. you may need to buy the greddy A/F meter, which i believe is not available yet.
i have recently purchased an emange ultimate to go on my turbo. i've been reading the operators manual, and i guess to eliminate the AFM, you need to program in a load vs. voltage base map for it to work. i also believe that i will not work on some cars. i guess i'll be the guine pig if i ever get my car together. i'm also not sure as to wether or not you can use a standard wideband to utilize the self tuning feature. you may need to buy the greddy A/F meter, which i believe is not available yet.
#14
FKITALL
iTrader: (14)
Originally Posted by need-a-t2
sorry for the thread revival but....
i have recently purchased an emange ultimate to go on my turbo. i've been reading the operators manual, and i guess to eliminate the AFM, you need to program in a load vs. voltage base map for it to work.
i have recently purchased an emange ultimate to go on my turbo. i've been reading the operators manual, and i guess to eliminate the AFM, you need to program in a load vs. voltage base map for it to work.
" An Airflow Output Map option even allows for airflow meter elimination"
Originally Posted by need-a-t2
i also believe that i will not work on some cars. .
Originally Posted by need-a-t2
i'm also not sure as to wether or not you can use a standard wideband to utilize the self tuning feature. you may need to buy the greddy A/F meter, which i believe "is not available yet.
And when used with a wideband A/F Meter, the Air Fuel Target Map can self-tune an Injector base tuning Map, to speed up initial tuning"
#18
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i have a megasquirt (not installed) and it too has a self learning feature as well. except, that it's a slow self learner. it has a data logging program that can log everything and then you have to load the new map (with or without tweaking) to the ECU. a little more work, but has the same function. and it eliminates the AFM as well.
how much do the e-manage units cost? i think the megasquirt was less than $200.
how much do the e-manage units cost? i think the megasquirt was less than $200.
#20
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well, it most definately isn't a MAF!!
it uses pressure differences to move the "flapper". the more the pressure difference, the more the air flow, the more the "flapper" opens.
mass air flow meters actually measure the mass of the air entering the motor. i think it measures it in grams. i may be mistaken.
it uses pressure differences to move the "flapper". the more the pressure difference, the more the air flow, the more the "flapper" opens.
mass air flow meters actually measure the mass of the air entering the motor. i think it measures it in grams. i may be mistaken.
#21
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Originally Posted by fstrnyou
well, it most definately isn't a MAF!!
it uses pressure differences to move the "flapper". the more the pressure difference, the more the air flow, the more the "flapper" opens.
mass air flow meters actually measure the mass of the air entering the motor. i think it measures it in grams. i may be mistaken.
it uses pressure differences to move the "flapper". the more the pressure difference, the more the air flow, the more the "flapper" opens.
mass air flow meters actually measure the mass of the air entering the motor. i think it measures it in grams. i may be mistaken.
#22
IFO Forced Induction Slo
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Furthermore, you are mistaken in "grams" measuring of air. A hot wire type MAF uses, get this, a platinum hot wire, a thermistor, and an electronic control circuit (ECC). First of all, the thermistor measures the incoming air temp. The platinum wire has a measured voltage sent through it to maintain a temp in relation to the temp read by the thermistor. When more air passes through the sensor, the wire losses heat. When this happens, the ECC compensates by sending more current through the wire. The ECC measures the current flow and puts out a voltage signal in proportion to current flow.
#23
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well, i was told by a well educated car guy, that rather than measuring current, it measures the frequency at which the current is sent through the wire. also, there is a separate temp sensor in the intake ducting to measure the temp, is uses the current frequency and the temp sensor output to determine the mass of the air. because after all, the Air/Fuel ratio is a weight ratio. Mass of Air/Mass of fuel.
#24
first of air fuel calculations are done by weight, ex 14.7gram air to 1 gram fuel, so how does the ecu come about the weight of air coming into the engine? here is chem 1 explanaiton for mass of air == PV=nRT (P= pressure, V= volume, n=Moles of gas, R= ideal gas law constant, and T= temperature) To be usefull for an ecu you rearange for n=(PV*29)/(10.73*T) (n= lbs/min, P=psia, V= cubic ft / min, T = degrees Rankine(degF +460), the 29 and 10.73 is the constant) so if you run speed density like megasquirt it has to take what it CAN measure (pressure, temperature) and what it ESTIMATES (Volume off of rpm,tps, and the ve tables) and runs it through the formula to get a useful air mass and then it can use an air fuel ratio to get an amout of fuel to inject. The Vane air flow meter systems go 1 step foward by using a large spring loaded air restriction to actualy measure the VOLUME of air so it knows pressure, temp, and volume, and is there fore a little more accurate, but still has to do alot of math. The hot wire air flow meter on the otherhand measues the amount of current it takes to keep a small piece of wire or film at a steady temperature, and therefore reactes to not only changes in volume but also density, effectivey giving a grams/sec vs voltage or grams/sec vs frequency output, so the ecu has to do no estimating or calculations, only apply the output of the meter to an air fuel ratio to determine the amout of fuel to inject.
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