Do I have to reset my ECU when I swap SRI with CAI? And if so what is the best method for resetting ECU on a 2k SiR??? thx!@!

 

no

 

Dude whats with the hammer heads, its just a simple question, you dont have to be a dink about it

 

get the **** outta here?
are you serious? can't be?
if so i stand corrected,
and take the hammers back..lol...

and i pull out back up fuse under the hood when i reset my ecu....

 

i reset whenever i mess with air intake and exhaust flow. Just don't go reseting everytime you put different grade gas in lol.

 

I thought so, whats the best way to reset the ECU? I heard disconnecting the battery isnt that good, i guess theres some fuse in the engine, Snatchback please dont answer to this one, lol


[Modified by CDM SiR, 10:01 PM 5/8/2002]


[Modified by CDM SiR, 10:01 PM 5/8/2002]

 

You don't have to reset it.

The ECU has a fuel trim that can change, and is constantly changing.

In closed loop the ECU will change the long and short term fuel trim by + or - 20%.

It is allways changing the fuel trim to attemt to keep the mixture at stoichiometric....so it will adjust to your intake.

WOT fuel injection does not change as far as I know, so resetting your ECU won't gain you more power there.

 

Then why did my emission light come on when I installed my SRI? It had to be reset, the dealer told me.

 

What is an SRI?

To get rid of a CEL you will have to reset the ECU.

Just pull the fuse in the engine bay fuse panel....it is the 7.5a accessory/radio fuse.

 

SRI = Short Ram Intake, (short arm intake)
Whats a CEL? Something emission light??

You just said you dont have to, and now you say you do have to? which one is it?




[Modified by CDM SiR, 11:42 PM 5/8/2002]

 

SRI= Short Ram Intake -took me awhile on that one too.

YES you need to reset your ecu, its better on your engine. After I put on my first air intake the engine wouldnt get enough gas to start. It kept dying after about 2 seconds. Well thats my expereince with the reseting, just pull out the big fuse in the engine bay, its the biggest one and it costs like 10 bucks if you blow it. hehe, I blew mine when I put the jumper cables on the wrong terminals in the dark.

 

Yall are crazy......i have been working on hondas for 5 years, and never once had to reset my computer for an intake...or any othe ecu on any other honda. A honda ecu does not learn fuel maps like a turbo wrx or supra does. If you have to reset your ecu to get your car to start you have worse problems than a new intake.

Dropcivc

 

First of all...if you don't care what anyone says, why you gettin all heated, calling me names. Secondly, a Honda ecu doesn't learn..point blank period. and it is one thing if you think you are doing it to gain some extra hp...but I was actually refering to the guy who said you would have to do it or your car won't start. what is that?

Dropcivc

 

are you implying that there is no fuse to pull if needed to reset ecu????
check the following quote dumb ***....

 

nuff said!

 

Thanks again everyone for all your comments, Snatchback included, but I still haven't gotten a straight answer with reason,

1 - Do you or dont you have to reset your ECU when you mod your intake or headers... or any mod for that reason. (when I put in my Short Arm intake my emissions light came on, I called the dealer and he said I have to bring it in the get reset)

2 - What is the best way of reseting the ECU, disconnect the battery? or pull a fuse? if so what fuse? where do you find it? whats the number?

Thanks again everyone!

 

1. i take back replying so harsh,,....i thought you were being a ****** hater,...lol...
2. anyways just like the above quote, this is the easiest way to reset the ecu,...believe me,...
this what a honda tech will probably do if you take to them,....
3. i do the same everytime my engine light comes on once in a blue moon for evap sensor,
from how i can visually explain it ,...its the fuse box on the top left hand of the engine bay
when facing the firewall, pop of the lid and its a 7.5 accessory fuse, red in color, in the middle
of the top row of fuses....

hope that helps...
some one have a pic to explain???

 

1. No, you don't have to reset the ECU. But, if you have a CEL(check engine light), you can reset the ECU to get rid of it.

2. Disconnect the 7.5a backup/radio fuse. It is found in the upper left side of the engine bay, in a fuse panel.

If the pic works....you want to remove the fuse to the right of the fuse in the top left corner. It is red, and marked 7.5a







[Modified by Mad HXMan, 9:57 AM 5/9/2002]

 

read this http://www.hondata.com/techecuanatomy.html
more specifically the last paragraph on the page

 

you guys read the new sport compact car magazine? it has a page in it about resetting the ecu.. they tested a subaru or somthing haulin throught the mountians and then disconnected the terminal and then tested again and it had a power loss of 10 hp so........

 

Also, you may want to check page 11-87 of the Helms manual for 96-00 civics.

Read about short and long term fuel trim. Honda ECU's DO learn.

 

Ok my engine didnt start after 2 turns, and by not starting I mean it actually started but died. on the 3rd try it did work. I think by resetting the ecu your keeping your engine doing what mine did, Your pulling the fuse out and when you preplace it the ecu realizes whats new instead of thinking it still has the old setup.

 

During startup your car is in open loop mode. It doesn't care what you have done to anything. It has preprogrammed values that don't change. The ECU doesn't quickly learn what you have done.

 

The pic didnt work Mad HXMan, pls try and post again, and thanks to everyone!!!

 

Ok....calm down, if you would stop quoting the south park movie long enough to think about what your saying instead of just spitting out what you read in a manual. You would realize that regardless of whether or not you beleive the ecu learns, he still shouldn't have to reset his ecu. If you choose to beleive me, the ecu will run the same program more or less regardless of what intake mods you make, he shouldn't need to reset it. If you choose to beleive that it does learn, you still won't have to reset, because the computer will "learn" the new values for the intake.
To further prove my point think about this. Imagine for a moment that the ecu did learn and was able to adjust the fuel and ignition maps for mods you make. Wouldn't the ecu then adjust itself back to as close to stock as possible after a mod to maintain the same performance and emissions it was designed to have from the factory. Are you really suggesting that the ecu, knows you are looking for performance and after you put on an intake it adjusts to provide more horsepower. In the end...it doesn't really matter if this kid chooses to beleive one argument or not...he just needs to know the truth. He does not HAVE TO reset his ecu in order for his car to start once hhe changes his intake.

Dropcivc