Battery Cut Off Switch

D Styron · 03-04-2010, 12:25 AM

Just out of curiosity how does cuting off a battery disconect switch on a computer car affect the performance. I routinely cut my switch off if we are going to be down awhile. Does cutting off the switch cause the computer to go into "learn" mode everytime? Could this be where my inconsistancy is coming from? What do most people do, never cut it off once you get to the track, cut it off after every run? Or does it not affect anyting just like a carb car. Just looking for opinions.
Thanks

hemidup · 03-04-2010, 07:03 AM

If your using the factory PCM, yes it does. At least my factory Mopar PCM does. It looses it adaptive learning's such as short term/long term fuel trims.

Marc Kinton · 03-04-2010, 06:54 PM

we have a separate wire to the computer and disconnect it every run. seems to help with the inconsistency a lot.

03-04-2010, 12:25 AM	#1
D Styron Junior Member Join Date: Nov 2003 Location: Houston Posts: 25 Likes: 0 Liked 0 Times in 0 Posts	Battery Cut Off Switch Just out of curiosity how does cuting off a battery disconect switch on a computer car affect the performance. I routinely cut my switch off if we are going to be down awhile. Does cutting off the switch cause the computer to go into "learn" mode everytime? Could this be where my inconsistancy is coming from? What do most people do, never cut it off once you get to the track, cut it off after every run? Or does it not affect anyting just like a carb car. Just looking for opinions. Thanks

03-04-2010, 07:03 AM	#2
hemidup Member Join Date: Jan 2010 Location: Minnesota Posts: 409 Likes: 0 Liked 0 Times in 0 Posts	Re: Battery Cut Off Switch If your using the factory PCM, yes it does. At least my factory Mopar PCM does. It looses it adaptive learning's such as short term/long term fuel trims.

03-04-2010, 06:54 PM	#3
Marc Kinton Member Join Date: Jun 2007 Location: Youngsville, NC Posts: 326 Likes: 0 Liked 0 Times in 0 Posts	Re: Battery Cut Off Switch we have a separate wire to the computer and disconnect it every run. seems to help with the inconsistency a lot.