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Old 02-28-2001, 09:38 PM   #1
Scooby Newbie
Member#: 2699
Join Date: Oct 2000
Location: Sebastian ,fl, Home of the old people
2001 2.5 RS- ?????

Post Reset on ECU?

In a week or two Iam getting a cobb intake for my 01 and I have a borla header and borla cat-back on it know so how would I reset my ECU?
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Old 02-28-2001, 09:42 PM   #2
Scooby Specialist
Member#: 1454
Join Date: May 2000
Location: Wyoming
2000 2.5 RS-T


Disconnect your negative battery terminal(the black wire going to the battery) for about 30 minutes, then connect it back. I believe it takes a 10mm socket.
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Old 02-28-2001, 10:23 PM   #3
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Member#: 2736
Join Date: Oct 2000
Chapter/Region: SCIC
Location: Los Angeles, CA US
2001 Impreza 2.5RS
Aspen White


If you've got an alarm, don't forget to somehow mute the siren when you reconnect the battery. Once you reconnect, it sets off the alarm. Then, turn on your car and let it idle for about 20 - 30 mins. w/o pressing the gas. Once that's done, turn it off. Then turn it on and drive around. That's it!
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Old 02-28-2001, 11:56 PM   #4
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Location: SoCal & TX

How about resetting without removing total power, I have radio presets, cd presets, bosst controller setting and ttimer settings
anyway to remove a fuse to the ecu or something?
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Old 03-01-2001, 08:48 AM   #5
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2018 Legacy /allroad
Datsun 71 240Z & 68 2000


You dont have to reset your ECU, ever if you dont want to. It just helps speed up the process. The ECU will learn the new intake without being reset. If you dont mind driving around for about 15 minutes to allow the computer to learn the new settings, then you dont have to unplug anything. The computer works on constant feedback from the emission controls. It will detect something has changed and adjust it for you.

The ECU reset is just to "speed up" the process. If you would rather keep all your settings. Dont reset the ECU.

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Old 03-01-2001, 09:02 AM   #6
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88 626 Turbo


maybe write down the settings and then do the reset??
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Old 03-01-2001, 12:13 PM   #7
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Join Date: Feb 2001

In order to reset the CPU, you'll have to diconnect the neg terminal for about a hour if not more. You'll know its reset when your clock start at 12:00. The system has a battery backup that will hold the data for about an hour while bat is disconnected. Then I recommend letting your ride idle for 10-15 min. Then drive it like a wuss for a few days to get a good air/fuel mixture.

This is what I had to do.

ps: if you reconnect your bat and punch the gas, the CPU will since all the air-think its the norm and you'll have horable gas milage for awhile till it fixes itself.
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Old 03-01-2001, 06:05 PM   #8
inpreza kid
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if you don't reset its ok but it just takes longer for the ECU to learn the mods you put on. over time the ecu will learn to deal with the but if your looking for instant results then you should reset.
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Old 03-01-2001, 09:16 PM   #9
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I don't know, you all say negative terminal, how about disconnect positive terminal?? Any reason why not?

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Old 03-01-2001, 11:18 PM   #10
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Location: Vancouver, WA USA

Disconecet the negitive and you don't have to worry about grounding the pos and arc welding your wrench to the body.
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