Engine management system 500hp - Subaru Impreza GC8 & RS Forum & Community: RS25.com

**mtcs** · 06-03-2009, 09:51 AM

Hey...
I am thinking of swapping my engine management in my rs from electromotives Tec3 standalone to a more user friendly system. No one wants to touch the tec3 system in my area anyways. So having it tuned on a dyno is nearly impossible. I am a little confussed when it comes to which one to choose though.

I currently have a 2000 impreza rs with Ej257 bottom end and ej251 heads. What is an engine management system dependant on? Heads or harness in the car?

Plus what would be my best bet? I used to have an aem ems sytem in my older dsm and that thing was gold. But I cant seem to find an AEM EMS system for the rs.

Can anyone help me out?

Currently have:

Looking into:

Storm · 06-03-2009, 12:27 PM

I'd get with your tuner to see what they are most experienced (comfortable) with. Honestly, most systems are pretty close in features nowadays, so it boils down to what the tuner likes to work with. Plug&play has it's benefits over wire-in....but if your tuner doesn't know the details of the system, it's not going to do you any good.

**RotarFreak** · 06-03-2009, 02:34 PM

This is the exact position I'm in now. Need a system. Though in my area I have a tuner for every system

What problems are you having with Tec 3? What makes it difficult to tune?
Also, when you'll be selling it, any idea on how much you'll be asking?

**Jefff** · 06-03-2009, 02:46 PM

FWIW i have the hydra, couldn't be happier with it....

**99GC8** · 06-03-2009, 02:51 PM

aem fic if you want a piggy back

AEM - Fuel / Ignition Controller (F/IC)

**Skidd** · 06-03-2009, 02:55 PM

Quote:

Originally Posted by 99GC8

aem fic if you want a piggy back

AEM - Fuel / Ignition Controller (F/IC)

Not a good choice... yet
Installed the F/IC today and now I have a miss? (01 Impreza RS)

**99GC8** · 06-03-2009, 03:06 PM

hmm my local shop is running it on their race cars with no problem
240 with sr20
2000 rs with ej255 swap
and it seams to work fine on both of them

awdboostftw · 06-03-2009, 03:25 PM

Find a tuner with an excellent reputation. Ask him what he likes. Go with that. I have AEM in my s2000 and couldn't be happier

**mtcs** · 06-04-2009, 12:15 PM

Quote:

Originally Posted by awdboostftw

Find a tuner with an excellent reputation. Ask him what he likes. Go with that. I have AEM in my s2000 and couldn't be happier

There are no tuners in my immediate area. The best tuner I know is in Rochester, NY and lives by AEM EMS. He also does Custom ECU Flashes, DSM Link, ECMLink Tuning, and AFC Tuning. Would rather go to this tuner because he has one of the few AWD dynos in the area (within 400 miles)

Just not sure how to addapt an AEM MES unit to my car. Im still a newb...but im learning fast.

**Anti Trust** · 06-04-2009, 12:54 PM

gata say hydra man, its very user friendly, even me knowing nothing about tuning cars at all had the idea down and just following the simple instructions got the hang of playing around with it.. element tuning gives you step by step and trouble shooting guide that is bery well writen and plug-n-play is always a +

06-03-2009, 09:51 AM	#1 (permalink)
mtcs Evo destroyer Car: 2000 Subaru impreza 2.5RSti Fav Mod: Precision 6262-SP Turbo My: Subaru Parts My: Subaru Blog Join Date: Mar 2008 Location: Alfred, NY Trader Rating: (5) Posts: 452	Engine management system 500hp Hey... I am thinking of swapping my engine management in my rs from electromotives Tec3 standalone to a more user friendly system. No one wants to touch the tec3 system in my area anyways. So having it tuned on a dyno is nearly impossible. I am a little confussed when it comes to which one to choose though. I currently have a 2000 impreza rs with Ej257 bottom end and ej251 heads. What is an engine management system dependant on? Heads or harness in the car? Plus what would be my best bet? I used to have an aem ems sytem in my older dsm and that thing was gold. But I cant seem to find an AEM EMS system for the rs. Can anyone help me out? Currently have: Looking into: __________________ Bye Bye highway monster 523whp fwd eclipse....hello off the line torque!!!! Last edited by mtcs; 06-03-2009 at 10:12 AM..

06-03-2009, 12:27 PM	#2 (permalink)
Storm 2.5L RS-T My: Subaru Parts Join Date: Dec 2001 Location: NE Ohio Trader Rating: (20) Posts: 5,848	I'd get with your tuner to see what they are most experienced (comfortable) with. Honestly, most systems are pretty close in features nowadays, so it boils down to what the tuner likes to work with. Plug&play has it's benefits over wire-in....but if your tuner doesn't know the details of the system, it's not going to do you any good. __________________ Jay Storm

06-03-2009, 02:34 PM	#3 (permalink)
RotarFreak General pain in the ass Car: 98 Superu Impreza 2.5 rs... Fav Mod: supacharja My: Subaru Parts Join Date: Aug 2002 Location: WA, Land of Kirk Trader Rating: (19) Posts: 3,546	This is the exact position I'm in now. Need a system. Though in my area I have a tuner for every system What problems are you having with Tec 3? What makes it difficult to tune? Also, when you'll be selling it, any idea on how much you'll be asking? __________________ "opinions are like @$$holes...everyone has one" --Reebis

06-03-2009, 02:46 PM	#4 (permalink)
Jefff Premium Member Car: 2002 2.5 RS-T Fav Mod: the 4th engine? My: Subaru Parts My: Subaru Blog Join Date: Feb 2007 Location: Vancouver BC(Home), Searcy, AR (school) Trader Rating: (5) Posts: 2,929	FWIW i have the hydra, couldn't be happier with it.... __________________ RIP Tslak 7/11/87-2/11/10

06-03-2009, 02:51 PM	#5 (permalink)
99GC8 Butt Scratcher! Car: 1999, 2.5rs, White Fav Mod: rallitek sways My: Subaru Parts My: Subaru Blog Join Date: Nov 2008 Location: Littleton, colorado Trader Rating: (1) Posts: 1,194	aem fic if you want a piggy back AEM - Fuel / Ignition Controller (F/IC) __________________ stereotypes are a real time saver

06-03-2009, 03:06 PM	#7 (permalink)
99GC8 Butt Scratcher! Car: 1999, 2.5rs, White Fav Mod: rallitek sways My: Subaru Parts My: Subaru Blog Join Date: Nov 2008 Location: Littleton, colorado Trader Rating: (1) Posts: 1,194	hmm my local shop is running it on their race cars with no problem 240 with sr20 2000 rs with ej255 swap and it seams to work fine on both of them __________________ stereotypes are a real time saver

06-03-2009, 03:25 PM	#8 (permalink)
awdboostftw 1.8L My: Subaru Parts Join Date: Jan 2009 Trader Rating: (0) Posts: 5	Find a tuner with an excellent reputation. Ask him what he likes. Go with that. I have AEM in my s2000 and couldn't be happier

06-04-2009, 12:54 PM	#10 (permalink)
Anti Trust Premium Member Car: 00 2.5rst, 92 svx, 02 forester Fav Mod: Hydra My: Subaru Parts My: Subaru Blog Join Date: Dec 2007 Location: vb, va. Trader Rating: (1) Posts: 932	gata say hydra man, its very user friendly, even me knowing nothing about tuning cars at all had the idea down and just following the simple instructions got the hang of playing around with it.. element tuning gives you step by step and trouble shooting guide that is bery well writen and plug-n-play is always a + __________________ Just Because I driver a forester doesnt make me

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