Oh yea definitely..i wouldnt buy an unmarried one. ...Im looking/keeping an eye out whether it says if its married or unamarried. Im just trying to find the right place to order it from...
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Those trying to scam u will say it's unmarried. You have no way to prove them wrong unless you're there in person and marrying it to your car before u hand over the cash.Originally Posted by Monyg85
Oh yea definitely..i wouldnt buy an unmarried one. ...Im looking/keeping an eye out whether it says if its married or unamarried. Im just trying to find the right place to order it from...
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I drove my 03 WRX for 4 years with no cats and a MBC with zero problems, with the exception of the CEL light when cruising in 5th. Basically, the car was running rich as I also had the Blitz ABOV.
Originally Posted by North Star
With an up pipe and down pipe, you should be fine for normal driving. Your stock ECU will retard the timing if any knocking is detected to protect the engine. I drove my 03 WRX for 4 years with no cats and a MBC with zero problems, with the exception of the CEL light when cruising in 5th. Basically, the car was running rich as I also had the Blitz ABOV.
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Originally Posted by North Star
Ahhh, I didn't know that the 04 ECU was that much different! My 05 wagon has pretty much the same set up, minus the cat deletes with zero issues. I'm just relaying personal experience with my Subies.
From Unibomber's Manifesto on Nasioc:
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What Subarus NEED engine management? While every Subaru will benefit from engine management, the 04+ turbo models (except STI) "require" it. The reason for this is the EPA mandated greater restrictions on ECUs for 2004+ and allow manufacturers to exclude one model. Subaru chose the STI as the exclusion, so the restrictions are not on the STI. The restrictions have to do with the open and closed loop fueling. To put the restrictions in a nutshell without being technical, there is a delay between open and closed loop fueling that can allow your 04+ Subaru to run lean during this crossover point in how your car gets fuel. Lean is dangerous as it produces detonation which is the #1 factor is blown pistons. In stock configuration, 04+ turbo models are fine, but modifications such as exhaust work or higher really necessitate the use of engine management as those mods cause the fueling issue to rear it's head. Yes, you can run certain mods for a short time until you get engine management, but you should never kid yourself on 04+ turbo models that bolt on modifications are fine without engine management.
What about manual/electronic boost controllers or air fuel controllers?
A manual/electronic boost controller or air fuel controller really isn't engine management. MBCs are fine when used correctly on 02/03 WRX and 04+ STI by a judicious user. The issue gets further clouded on 04+ turbo models less STI, due to the open/closed loop delay. One can lump in the mix air/fuel controllers as well for the same reason. Usually those two devices are used by either cheap skates, n00bs, or advanced users who combine them with other forms of real engine management.
What Subarus NEED engine management? While every Subaru will benefit from engine management, the 04+ turbo models (except STI) "require" it. The reason for this is the EPA mandated greater restrictions on ECUs for 2004+ and allow manufacturers to exclude one model. Subaru chose the STI as the exclusion, so the restrictions are not on the STI. The restrictions have to do with the open and closed loop fueling. To put the restrictions in a nutshell without being technical, there is a delay between open and closed loop fueling that can allow your 04+ Subaru to run lean during this crossover point in how your car gets fuel. Lean is dangerous as it produces detonation which is the #1 factor is blown pistons. In stock configuration, 04+ turbo models are fine, but modifications such as exhaust work or higher really necessitate the use of engine management as those mods cause the fueling issue to rear it's head. Yes, you can run certain mods for a short time until you get engine management, but you should never kid yourself on 04+ turbo models that bolt on modifications are fine without engine management.
What about manual/electronic boost controllers or air fuel controllers?
A manual/electronic boost controller or air fuel controller really isn't engine management. MBCs are fine when used correctly on 02/03 WRX and 04+ STI by a judicious user. The issue gets further clouded on 04+ turbo models less STI, due to the open/closed loop delay. One can lump in the mix air/fuel controllers as well for the same reason. Usually those two devices are used by either cheap skates, n00bs, or advanced users who combine them with other forms of real engine management.
U know, that really helped out and cleared things up a good bit for me man. I appreciate that. I always got various answers as too why an EM was immediately needed after tbe on 04 wrx, but that explains a good bit.
I will definitely be ordering an ap in the next few days...as soon as i find a good reliable website.
I will definitely be ordering an ap in the next few days...as soon as i find a good reliable website.