Disconnect Battery while putting in intake??

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Jan 20, 2008 | 10:04 PM

andyboy

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From: VA

Disconnect Battery while putting in intake??

Is it MANDATORY to unplug your battery when putting in the intake? I would think that unplugging it would screw something up.

Jan 21, 2008 | 01:44 AM

2slow

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From: Norcal

I did it before i installed my LMS. When you disconnect the battery it will automatically reset the ECU so the car 'learns' the intake.

Jan 21, 2008 | 06:59 AM

Gernby

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From: CA

Not only is disconnecting the battery NOT manditory, it shouldn't even be recommended. The ECM is continuously adjusting fuel trims, so there's no reason to worry about the extremely minor changes that an intake will make.

Jan 21, 2008 | 08:42 PM

TLP_IS350

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From: NC

i did it when i installed mine

and my cars still runs!

Jan 22, 2008 | 03:37 AM

Joeb427

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From: SC

I'm still waiting for the JoeZ to be in stock.
So the battery doesn't have to be disconnected?
What do the directions say?It would be nice not having to disconnect the battery and not having to reset the windows and radio stations.
Not a big deal but nice.

Jan 22, 2008 | 06:48 AM

Gernby

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From: CA

The only time the battery should be disconnected is when you are:
1) Working on the car's electrical system
2) Working on the car's fuel system
3) Intentionally trying to reset everything for some diagnostic purpose

Jan 22, 2008 | 06:51 AM

Joeb427

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From: SC

Quote:

Originally Posted by Gernby

Sounds good to me,Gernby.
I'd rather not do the disconnect and probably won't but just about everyone does for some reason.

Jan 22, 2008 | 08:21 AM

Lexmex

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From: Miami, Florida

I will also +1 Gernby. Without having reset the battery, I have found that usually the modifications will be picked up within about an hour's driving time max and generally within 15 minutes or so of non-stop driving, which is about just the same as if you had disconnected the battery and let it learn from there.

Only time I do reset the battery in my RX300 for instance is if I am going to the track and I will reset it to dump the ECU of the daily commute and reset it for colder night weather and less sitting in traffic, but this is Mexico so these things occur here.

Jan 25, 2008 | 08:59 PM

#10

nehal51086

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From: Charlotte, NC

there is a way to reset the ecu without having to disconnect the batter...i read a while back a search might bring it up...its simply unplugging a 2 fuses...this way u dont loose the navi/radio/seat memory...