Should I reset my ECU if I've.....

[LeeLee D]

Put Full 2.25" Cat-back /w Borla Header and a Weapon R Secret Weapon Shortram on my car. Right now my gas milage isnt the greatest and I read in another thread that if you reset your ECU it will Learn the new Air/Fuel shiat. Seeing as my car has alot more flow to it now would it help to let my car relearn?

Im guessing reseting the ECU is the same on a 98 as it is on a 96 so Unplugging the battery for an hour and pressing the brakes should still work?

* I wonder what a 09 Legacy will look like...

[Superu264]

Im not sure I heard the ECU in the 2009s were quite particular..

sorry I had to :cool:

[LeeLee D]

haha oops 98 :P

[bubaru21]

when i put my seceret weapon intake on i noticed my gas was doing bad but i also had planned to reset the ecu. i was more or less testing my own theory and yes my gas milage went back up. so i am sure it should work for you. it may not be as good as stock set up though.

[Reason]

I would suggest air/fuel management like the Apexi S-AFC2 or S-AFC NEO. Tune it yourself, or get it dyno tuned (which I would do).

[Wiscon_Mark]

If you do mods, it's always a good idea to reset. It reloads a base map and allows the ECU to get used to how everything is working (including your driving style).

[Reason]

If you do mods, it's always a good idea to reset. It reloads a base map and allows the ECU to get used to how everything is working (including your driving style).

You heard it from my main man. Also I would get that air/fuel controller before any other mods.

[LeeLee D]

Awesome, thanks guys. All I needed to hear :)

[OutbackGT]

Hmm. So how exactly is the ECU reset? Disconnecting the battery (both terminals?)

[Reason]

Hmm. So how exactly is the ECU reset? Disconnecting the battery (both terminals?)

Negative Charlie

[Wiscon_Mark]

One terminal will suffice. Both would be unnecessary as you've already broken the circuit. Leave it off for half an hour or so (a safe amount of time, I don't know exactly how long it takes to clear) and pump the brake pedals a few times while it's disconnected.

[d1giPhux]

I've been wondering this.. what does pumping the break pedals do? Make it realize that the circuit has been broken or something? I installed my intake today and reset the ECU.. 15 mins without the neg term worked for me. =]

[Reason]

I've been wondering this.. what does pumping the break pedals do? Make it realize that the circuit has been broken or something? I installed my intake today and reset the ECU.. 15 mins without the neg term worked for me. =]

Make sure all the juice "power" is out of the system.

[Wiscon_Mark]

The brake lights will turn on no matter what (unless there's absolutely no power in the system) so they're a good little failsafe sorta thing...

[LeeLee D]

Car runs much better now. Got power back that should have been there back wasnt due to using old air/fual maps. It might just be in my head but i think my 4EAT doesnt shift as much as a retard anymore, now that it knows how I like to drive.

Its too bad I cant boot around more often, I always get airlocked it I do boot around too much. Have to get my head gaskets done soon.