just curious if it makes a difference if i unhook the positive cable or the negative cable from my battery to reset the ecu

 

I also would like too. Have done dso on my 99 Acura Cl helped milage. Hyundai said it would work on my 2006 or later. MY HARM SYSTEM ???? WHO DO I BELELIVE.

 

You ALWAYS remove the negative battery cable first. Never, ever, ever, remove the positive cable first.

And, you don't need to do that. Just pull the ECM fuse for about 1/2 an hour.

 

ok,,just curious you say never remove the positive cable first,,why is that,will it ruin the ecu and where would i find the fuse for the ecu,,under the hood or under the dash

 

It's done for safety reasons. The reason is that when you are using a wrench to disconnect the battery cable you can easily touch a portion of the car that is grounded. If you were disconnecting the positive + cable first and you accidently touch a metal part the vehicle you will create a massive short circuit with the fireworks involved. The wrench in your hand will become an arc welder. By disconnecting the negative - cable first there is no danger of this happening as touching a metal part of the vehicle will do nothing as you are already working with the ground. Always disconnect the ground cable first and then you can move to the positive cable without worries.

When installing a battery you do the opposite. Always connect the positive first, then the negative.