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Old 02-11-2005, 05:55 PM   #1
edaniele1212
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Default The best WRX STi engine management

What are your thoughts for the best engine management. My car is a everyday driver so it cant be "too" radical. I would like to be able to switch it on and off.
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Old 02-11-2005, 05:59 PM   #2
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On & Off = multipule maps....soo....Reflashes, unichips, Ecktec, Exide are all out.....

UTEC is a multi map system, I believe FCON, Hydra, and Emanage are as well
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Old 02-11-2005, 05:59 PM   #3
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Stock or modded? And what mods?

-Corey
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Old 02-11-2005, 06:10 PM   #4
edaniele1212
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By the time I get the EM I'll have TBE, FMIC, ColdAir Intake, Pullys, ect... (maybe injectors and a pump) I dont really know how easy it is to switch them on and off, but I would like to switch it when I want to race or when I take long trips.
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Old 02-11-2005, 06:22 PM   #5
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Then you definitly need a multimap system. Your best bet is probablt the XEDE or UTEC if you want to keep the stock ECU (which you probably do for a daily driver).
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Old 02-11-2005, 07:44 PM   #6
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Quote:
Originally Posted by Scoobyracer1
On & Off = multipule maps....soo....Reflashes, unichips, Ecktec, Exide are all out.....

UTEC is a multi map system, I believe FCON, Hydra, and Emanage are as well
Sorru but you're wrong about ECUtek

ECUtek supports dual maps - I have that in my WRX with the second in my case set up as a valet map

But you can do just about anything - stock, fuel econ, 100 Octane etc with the second map
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Old 02-11-2005, 07:57 PM   #7
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sounds like you want the TurboXS UTEC. Car can be switched to stock with just a push of a button and it will give you 25whp with no other modifications.

Good Luck
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Old 02-11-2005, 09:08 PM   #8
Subie Gal
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please post in the correct forum.

in this case the ENGINE MANAGEMENT forum.

moving now...
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Old 02-11-2005, 09:14 PM   #9
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Quote:
Originally Posted by tt_ttf
Sorru but you're wrong about ECUtek

ECUtek supports dual maps - I have that in my WRX with the second in my case set up as a valet map

But you can do just about anything - stock, fuel econ, 100 Octane etc with the second map
I inquired about multi-map support for STis a while back and found that they hadn't implemented it yet for my car. It might be different now, I haven't been actively pursuing EM lately.
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Old 02-12-2005, 01:40 AM   #10
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Quote:
Originally Posted by BLACK02WAGON
sounds like you want the TurboXS UTEC. Car can be switched to stock with just a push of a button and it will give you 25whp with no other modifications.

Good Luck
I wouldn't take the UTEC over the ECUtek. The ECUtek has better resolution.
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Old 02-12-2005, 02:06 AM   #11
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Quote:
Originally Posted by tt_ttf
Sorru but you're wrong about ECUtek

ECUtek supports dual maps - I have that in my WRX with the second in my case set up as a valet map

But you can do just about anything - stock, fuel econ, 100 Octane etc with the second map
The dual map support on WRXs with a EcuTeK flash is limited to two different boost maps. If someone has told you otherwise (fuel economy, high octance, etc.), I believe they were misinformed.

However, it is possible to leave plenty of "learning headroom" in the timing maps so that the ECU can take advantage of higher octane fuel... but I don't know how good or bad that might affect ignition timing for day-to-day driving.

edit: eye khant speell

Last edited by x99percent; 02-14-2005 at 11:23 AM.
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Old 02-13-2005, 10:39 AM   #12
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XEDE is also an option
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Old 02-13-2005, 10:45 AM   #13
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ecutek and utec together "the utec works alot better when it doesnt have the ecu fighting it for control"
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Old 02-13-2005, 05:25 PM   #14
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What about the Cobb AccessPORT? Multiple maps by just hooking it up to the AP + you don't have to get it tuned like the Ecutek. If you are changing injectors, you won't be able to go back to a stock ECU. Food for thought.
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Old 02-14-2005, 05:30 PM   #15
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No need to do a FMIC, Injectors and a pump until you have an upgraded turbo in the works..(think FP Green). once you do the injectors your goanna need EM to adjust a/f and timing. And if you do a FMIC the cold air intake is out... just wont fit with the FM piping, you'll want to do a turbo xs shorty or Perrin Ram pod.

UTEC is the weapon of choise. Fairly inexpensive and when you want to sell it you just unplug it and post it here....no purchasing a new ECU. Just make sure that if your not into doing the tuning yourself that you have access to a knowlegable tuner... which is no different than if you were to choose EcuTek; which you cant tune anyway.

If your really serious about EM look into Hydra, AEM, Motec... all a little more expensive but supiorior products. At least in my oppinion.


good luck.


-K
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Old 02-14-2005, 05:46 PM   #16
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I would def look into the Cobb AP. Nice features and Realtime maps / stock mode etc. Good luck.
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Old 02-14-2005, 05:59 PM   #17
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The stock ECU and its algorithms are pretty damned good and if you or your tuner can change the calibration maps easily, then that's probably the best solution. It appears the Cobb STi StreetTUNER intends to provide that functionality.
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Old 02-14-2005, 06:05 PM   #18
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Cobb's tunes are nothing like getting your car properly, professionally tuned. You'll make more more, safer, with a prof. tune....
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Old 02-14-2005, 07:08 PM   #19
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I completely disagree with kwilson, the first thing that you should do is EM. I will repeat something that I have said many times. Why upgrade something if you cannot take full advantage of the upgrade.

The only engine upgrades that I have are all TurboXS: FMIC, RFL-Ti(catless), shorty intake, and UTEC. With these upgrades and tuning alone, I made 324whp and 320 wtq so I again disagree with kwilson. Save the injectors and pump until you plan on doing another turbo. VF39 is plenty for daily driven though.
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Old 02-14-2005, 07:11 PM   #20
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BTW.....you will want to use the UTEC if you need OBDII testing for state inspection. I don't know about ECUTEK, AP, etc but I know that standalones (hydra, AEM, etc) will not let you have OBDII.

Good Luck
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Old 02-14-2005, 07:29 PM   #21
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Quote:
Originally Posted by BLACK02WAGON
BTW.....you will want to use the UTEC if you need OBDII testing for state inspection. I don't know about ECUTEK, AP, etc but I know that standalones (hydra, AEM, etc) will not let you have OBDII.

Good Luck
ECUtek and Cobb AP are both based on the stock ECU so OBDII is not a problem (unless you mean the later 2005 odb spec which won't be an issue for a couple of years yet)
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Old 02-14-2005, 07:50 PM   #22
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Quote:
Originally Posted by mcowger
Cobb's off the shelf tunes are nothing like getting your car properly, professionally tuned. You'll make more more, safer, with a prof. tune....

Fixed it for you. They have the capability to "professionally" tune cars at their shop, I have a friend that was nothing but pleased with his custom Access ECU tune.
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Old 02-14-2005, 08:02 PM   #23
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Quote:
Originally Posted by mcowger
Cobb's tunes are nothing like getting your car properly, professionally tuned. You'll make more more, safer, with a prof. tune....
True, but with the Cobb STi StreetTUNER you don't have to rely on Cobb's tunes. You, or your tuner, can use it to adjust the stock ECU's calibrations to accomodate/support your modifications.
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Old 02-16-2005, 11:49 PM   #24
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I am new to the subaru world and engine management. I want to start modding my 04 WRX, but I am also hesitant to do anything that will void the warranty. From what I've read starting with EM (sounds like UTEC, XEDE, or ECUTEK is what I would want) before bolt-on's is a perfectly good and sounds like smarter route to take. My question is regarding what is physically involved in the EM upgrade. Does it completely replace the stock ECU or does it work in conjunction with it. Basically, I want to know if I have a problem with the car and I have the EM upgrade installed, what would I need to do in order for the dealer not to know it's there?....if that is even possible. Thanks for any info.
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Old 02-17-2005, 02:52 PM   #25
ScoreBo
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I had a UTEC and my only beef was the crossover hesitation. It certainly has a number of great features which makes it shine in a class by itself. There is a lot of experience tuning them and it doesn't alter your factory ECU flash. I just got tired of the crossover hesitation, so I went with the AP. With the StreetTuner that is coming out in a few weeks, I am hopeful to add my GT12 soon + try the AVCS controls.
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