Do i need to reset the ECU after installing CAI?

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07-16-2005, 01:00 AM

Medrivfast

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Do i need to reset the ECU after installing CAI?

I'm having the dealership install my AEM Cai (For Free). After i get it home do i need to reset the ECU. And if i do, can i just take the negative terminal off the battery to reset it? I'm asking this because i had to do this to a previous car i owned.

07-16-2005, 01:13 AM

Futureicon

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You only need to reset it if you throw a code. If the dealership is doing the install, you shouldn't have to do anything.

07-16-2005, 05:08 AM

Dewmerz

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Moved

You may get a few different responses on this one as each person does it different. I pulled the negative terminal to reset the ECU and then let the engine idle for 15 minutes.

07-16-2005, 05:37 AM

blimon63

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i put my injen cai on and drove it like 2 minutes later. still no codes. this was done 5-7 months ago

07-16-2005, 06:34 AM

squirrel

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I never disconnected the negative cable or ECU when I installed my SRI, and I have had no CEL for the last 22+ months.

07-16-2005, 07:16 AM

ThunderGod

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Quote:

Originally Posted by Dewmerz

I pulled the negative terminal to reset the ECU and then let the engine idle for 15 minutes.

YUP, YUP. i did the same.

07-16-2005, 11:44 AM

jct

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they say you have to diconect to battery for safety but i never do

07-16-2005, 04:09 PM

Simplyscion

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Never disconnected my terminal...was fine...never threw a CEL ever

07-17-2005, 01:15 AM

Medrivfast

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Well i got the CAI installed today. The dealership did disconnect the battery terminal. I did notice a difference in power.

07-19-2005, 04:35 PM

#10

DisneybB

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You should disconnect yur battery whenever you do work on a car with airbags as a precaution. Your ECU will go through a learning process just like it did when you broke in your car the first few thousand miles.

07-20-2005, 01:01 AM

#11

KangaRod

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do you think you'll make more power if you disconnect the battery, or are the ecu's smart enough to learn after mods?

07-20-2005, 01:15 AM

#12

Simplyscion

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Naa...the ecu will recognize that more dense air is entering the throttle body and eventually adjust for the change by itself.

07-20-2005, 04:53 AM

#13

KangaRod

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oh well
I did it anyways. It feels slow again

11-03-2005, 12:58 AM

#14

StatuSCheckA

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I'm sorry i bumped this thread, dont be mad.
But I DO plan on disconnecting the battery and fuse, while we install.

Will disconnecting the battery reset ALL my Radio codes, such as Bass, and the Welcome Screen?