OK, I'm a newb to modding I am getting ready to get a CAI and was wondering if I need to reset the ECU. If so, how do I do it?

 

well it always good to reset the ECU after changing something on a car, especially intake.. I mean it's not necesary.. but its suggested i guess?

To do so: Remove the negative terminal of the battery from the car.... leave it off for like 10-15 minutes to be sure. When reinstalling, if you have the keyless or any type of alarm normally they go off when you reattach the negative wire to the terminal... Sooo close all doors, reattach the wire, if the alarm does go off, make sure you push down the button to the hood that tells the car that the hood is closed and lock and unlock the car...

 

I dont know which CAI you're getting but i couldnt get the injen in without taking the battery out which reset the ecu for me while instaliing it.

Also some ppl say that once you reset the ecu you should let it idle for 10-15min. and drive the car w/o flooring it for a few also.

 

That's true, I've read that as well on the forums.

So...

1. Remove Negative Terminal from Battery
2. Install CAI
3. Re-attach the Terminal
4. Let the Car Idle for about 10-15 minutes
5. Don't punch it for a while, (200-500kms?)
6. Enjoy.

 

I would just drive 10-15 min without going crazy..... then shut it off and back on and you should be good to go.

 

Thanks for all the info guys.

 

Oh, BTW I'm getting the RRM CAI.

 

After reseting, you all are right about letting it idle for a few before driving it, however, after that idle period, DON'T take it easy on the car, go ahead and beat on it. Our car, like most modern cars, adjust the fuel curve based on the driver's style. Drive really conservatively, then the map will be conservative for better economy. Drive the car hard, and the map will be a bit more aggressive for more power.

 

i guess i should reset mine again soon then. i took it light after i did my resets. The instructions on the RRM piggyback ECU even say to drive it light for a few. but maybe thats only for when you first install it, not sure.

 

About how long does it take to set the map for your aggressive driving? Also if you beat on it after reseting the ECU and the map does get set for more power then you drive like a granny for a while after that, will it slowly rework the map to be more conservative ?

 

yep, the ecu is constantly relearning your driving style. The average time to relearn completely is 75 miles, 100 on the high side. You can reset the ECU and drive slowly for a bit, RRM recommends this with the piggyback in order to help the computer learn constant thottle positions and idling faster. In any case no matter how you drive the car today if you drive 75 miles on the track tomorrow you will have a totally different car.