I just recently put an AEM CAI on my teg. do i need to reset the ECU for air/fuel mix? if so, how do i do this?

 

Yes, and what you do is pull the ECU fuse in the fuse box under the hood on the passenger side of the engine bay leave it out for about 10-15 min. and stick it back in.

 

Teken... always there to get the slack the others leave out.... Thanks Teken

 

*sniff* I can feel the love... *sniff*

 

which fuse would this be? i remember being told to do this but i forgot which fuse it was.

could someone kindly point the fuse out for me?

 

Facing the engine bay the fuse box is in the far left corner against the firewall. The lid of the fuse box has a diagram, but the fuse is in the far left corner of the fuse box (15 amp fuse). . This is in a G3 teg not sure about others...

 

your talkin about the one in the top and most left fusE?

i just asked someone like 5 mins ago cause the topic was still on mymind, and he said that it was the fuse thats 2 below the one your talkin about i think its 40amps....im confused now

 

Yes it is a 15 amp fuse there should be a diagram right on the lid of the fuse box, unless it has come off, and it shows the 15 amp ECU fuse in the top (top meaning toward the firewall) left corner..

 

Or you could also just disconnect the negative battery cable.


[Modified by Integ_GrL, 9:29 PM 7/16/2001]

 

Do you do this while the fuse is out, or after you put it back in? Sorry I've never done this.

 

i dont think you'll be able to start the car with the fuse out....but you let the car idle with the fuse in.

 

i find this unecessary...

but thats just from personal experience

 

That's the first thing I did - disconnect the negative battery cable. Then I went about installing the CAI and about 1 hour later I was ready to reconnect the negative battery cable. Then I started up the car and let it idle undisturbed until it was warmed up and the fan came on and shut it off. It has been running great ever since.

Quick question on resetting - doesn't the computer automatically compare engine system parameters with hardcoded in 'database' and adjust to get engine system parameters close to the pre-programmed specifications? Wouldn't that mean resetting the ECU isn't neccessary (I've heard of people not resetting the ECU and everything working perfect and I've heard of People resetting the ECU and having problems)? Would letting the car idle undisturbed for awhile upon startup is the determining factor, so the ECU can sort out the system mapping?


[Modified by Vracer111, 11:42 AM 7/17/2001]

 

Don't you need to reset the radio fuse as well? thats what I was told by tech at Acura, that you need to reset both fuses. He said that even though it is a radio fuse, it has an effect on the full resetment of the computer.........

 

[QUOTE]That's the first thing I did - disconnect the negative battery cable. Then I went about installing the CAI and about 1 hour later I was ready to reconnect the negative battery cable. Then I started up the car and let it idle undisturbed until it was warmed up and the fan came on and shut it off. It has been running great ever since.[QUOTE]

resetting the battery does nothing, people think it does but it does nothing. you need to pull the fuses under the hood.

 

how long do i need to leave the fuses out to allow the computer time to reset?

 

5 minutes just to be safe.

If you want to heed everyone's advice, do this each time you add a significant mod like intake, header, exhaust, etc...

You could disconnect the battery and the fuse if you want... Can't hurt although you'll have to put in your radio code again and reset your clock.

BTW: I will recommend an air-fuel controller - even if you only install an intake.

I noticed that the car was running lean (as indicated by my spark plugs) after installing only a cai. You could richen up the fuel to compensate with an afc...

 

So either the backup or ECU fuse would do? I always use the backup fuse. Which one is right if it even matters? Thanks.

 

Just so I correctly understand

G2-backup fuse
G3-ECU fuse

Agreed, removing the battery cable is more involved than pulling a fuse. Thanks again.



[Modified by nugget8000, 11:53 PM 7/17/2001]

 

Has anyone else read about this not providing benefits? Whoever I rad saying that, probably didn't let the car idle long enough.

Teken: You are saying that the ECU constantly adjusts to new readings from it's seensors? So If my CAI has been installed for three months the ECU has probably already got things figured out . . . no need to reset teh ECU.