Which should I get for my car? Help, please. Already searched.

 

whatever you can afford

 

Get a apex SAFCII for now. Tune it along with the rtek

 

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.

 

Yeah, I want the Ultimate, need to dump my MAF. Vaughn, what fuel setup are you using? My current base map is pretty crappy, it would be nice to see someone else's.

 

SO i guess emanage has finally moved into the real of standalone? is this correct?

 

No, E-Manage Ultimate is still a piggyback but it does give you many of the features of a standalone such as timing control, AFM removal, etc.

 

i have not even tuned yet...

stock injectors , and only walbro fuel pump.

did 295hp on dyno @ 13psi

i did not trust the dyno WBO since it was a tail pipe sensor & my LM1 is closer and did get better readings.

 

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 a Rtek 1.7 I like it works good I just run rich Im gonna get a SAFC to fine tune it till the 2.0 come out then ill get that prolly

 

i think the best would be a combo of rtek 1.7 and ultimate

 

I think the best would be a Haltech or Mircotech. Since they can be found for only a few hundred more.

Does Ultimate e-manage control ignition?

 

yes

 

Greddy quote:
" An Airflow Output Map option even allows for airflow meter elimination"

This is true, but it does work for the 7.

Greddy Quote:
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"

 

Any info as to the RTEK7 2.0 eliminating the MAF?

 

Its an AFM!

 

Just purchased the Greddy Ultimate E-Manage. For the guys that have it, we should get together to help out.
Chris

 

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.

 

Not another terminlogy professor...tisk tisk.

 

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.

 

I'm sorry, if you do your research correctly, you will find that a vain AFM (Air Flow Meter, like the kind in your RX-7) is a type of MAF (Mass Airflow Sensor), as is a Karmen.

 

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.

 

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.

 

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.

 

thanks jud. i swear i learn something ever time i talk to that guy.