ECU resetting for performance - Page 2 - HondaClub.com

JCool · 10-14-2007, 03:04 PM

do you think i could help out with bad gas mileage? right know im getting about 24mpg not close to what they say it should get.

**EyesofFreedom** · 10-14-2007, 03:37 PM

Well it couldnt make it any worse...

JCool · 10-14-2007, 05:21 PM

true that

JCool · 10-14-2007, 07:39 PM

what about your oil % on the 06 civic's would that clear?

**EyesofFreedom** · 10-15-2007, 01:54 PM

I believe it would because you are basically starting off everything in the computer and losing all saved data...

darkstarbd · 03-21-2008, 03:17 PM

Hi:

I am using Apexi AFC Neo. If i want to reset my ecu, should i do it with the current settings in the AFC Neo or should i reset the AFC NEO to factory default and then reset the ECU?

d15z1vtec · 06-26-2008, 11:32 PM

u could unhook the battery or just pull the ecu fuse and the back up fuse right next to it.
they are in the fuse box next to the battery. the top left fuse 20 amp and 7.5 amp fuse.
it should only take about 30 seconds to a minute for the ecu to deenergize. its they same thing for resetting a check engine light. the kam memory has to deenergize which will wipe it clean

jembr325 · 06-27-2008, 03:56 PM

Not to be contentious. =) You raise a great point about resetting the ECU.

But, I have a few comments on this thread. In order to appropriately reset your ECU you should use the Honda tech's method, not pull the negative power lead on the battery. Secondly, your ECU will need a certain period to "Readjust" -- relearn its environment. Many think they can pull the lead, jump in the car and they are good. This isn't true.

Secondly, ANYTIME you make a modification to your car -- intake, exhaust, etc. -- that modifies the performance you should reset your ECU. The ECU will calculate air to fuel ratios etc. and, if you have ever done some of these installs, you'll notice that your car will idle poorly as a result (as my install on intake and headers). Likewise, if you move your car to a new environment (e.g., a hot weather state to cold) you should reset the ECU.

The following is how to reset your ECU, which all Honda technicians do prior to returning your car from the shop:

step 1: Ensure the car is at opperating tempreature (i.e., take it for a drive or let it idle for a 15 mintues).

step 2: Take the fuse for the ecu out -- on my s2000 its labeled "Backup" but do research on yours because it could be different -- wait 15 minutes.

step 3: Put the fuse back in.

step 4: turn the car on. DO NOT TOUCH ANYTHING. GIVE IT NO GAS. let the car idle for roughly 15 minutes, or until the car is idling smooth at lower rpm's.

step 5: Turn the ignition off. ONCE AGAIN, DO NOT TOUCH ANYTHING OTHER THAN THE KEY. Immediately turn the ignition back on after you have gone to full off. this will store the new settings your ecu has made.

These steps will properly reset your ecu. After they are accomplished go do whatever, the new settings have been stored.

jembr325 · 06-27-2008, 04:49 PM

You made some great points and I agree with you on most everything but methodology for reset. Thanks for posting this.

Best,

Jon

10-14-2007, 03:04 PM	#11 (permalink)
JCool Member Join Date: Jan 2007 Posts: 65	do you think i could help out with bad gas mileage? right know im getting about 24mpg not close to what they say it should get. __________________

10-14-2007, 03:37 PM	#12 (permalink)
EyesofFreedom Official Instigator! Join Date: Jun 2006 Posts: 2,103	Well it couldnt make it any worse... __________________ Myspace me... http://www.myspace.com/hondaclub_eyesoffreedom Ferio Project car build page... http://www.my2002ex.mysite.com My other passion... http://www.nscale.org/defaulteng.htm

10-14-2007, 05:21 PM	#13 (permalink)
JCool Member Join Date: Jan 2007 Posts: 65	true that __________________

10-14-2007, 07:39 PM	#14 (permalink)
JCool Member Join Date: Jan 2007 Posts: 65	what about your oil % on the 06 civic's would that clear? __________________

10-15-2007, 01:54 PM	#15 (permalink)
EyesofFreedom Official Instigator! Join Date: Jun 2006 Posts: 2,103	I believe it would because you are basically starting off everything in the computer and losing all saved data... __________________ Myspace me... http://www.myspace.com/hondaclub_eyesoffreedom Ferio Project car build page... http://www.my2002ex.mysite.com My other passion... http://www.nscale.org/defaulteng.htm

03-21-2008, 03:17 PM	#16 (permalink)
darkstarbd Junior Member Join Date: Mar 2008 Posts: 1	Hi: I am using Apexi AFC Neo. If i want to reset my ecu, should i do it with the current settings in the AFC Neo or should i reset the AFC NEO to factory default and then reset the ECU?

06-26-2008, 11:32 PM	#17 (permalink)
d15z1vtec Junior Member Join Date: Jun 2008 Posts: 14	u could unhook the battery or just pull the ecu fuse and the back up fuse right next to it. they are in the fuse box next to the battery. the top left fuse 20 amp and 7.5 amp fuse. it should only take about 30 seconds to a minute for the ecu to deenergize. its they same thing for resetting a check engine light. the kam memory has to deenergize which will wipe it clean

06-27-2008, 03:56 PM	#18 (permalink)
jembr325 Senior Member Join Date: Apr 2008 Posts: 143	Not to be contentious. =) You raise a great point about resetting the ECU. But, I have a few comments on this thread. In order to appropriately reset your ECU you should use the Honda tech's method, not pull the negative power lead on the battery. Secondly, your ECU will need a certain period to "Readjust" -- relearn its environment. Many think they can pull the lead, jump in the car and they are good. This isn't true. Secondly, ANYTIME you make a modification to your car -- intake, exhaust, etc. -- that modifies the performance you should reset your ECU. The ECU will calculate air to fuel ratios etc. and, if you have ever done some of these installs, you'll notice that your car will idle poorly as a result (as my install on intake and headers). Likewise, if you move your car to a new environment (e.g., a hot weather state to cold) you should reset the ECU. The following is how to reset your ECU, which all Honda technicians do prior to returning your car from the shop: step 1: Ensure the car is at opperating tempreature (i.e., take it for a drive or let it idle for a 15 mintues). step 2: Take the fuse for the ecu out -- on my s2000 its labeled "Backup" but do research on yours because it could be different -- wait 15 minutes. step 3: Put the fuse back in. step 4: turn the car on. DO NOT TOUCH ANYTHING. GIVE IT NO GAS. let the car idle for roughly 15 minutes, or until the car is idling smooth at lower rpm's. step 5: Turn the ignition off. ONCE AGAIN, DO NOT TOUCH ANYTHING OTHER THAN THE KEY. Immediately turn the ignition back on after you have gone to full off. this will store the new settings your ecu has made. These steps will properly reset your ecu. After they are accomplished go do whatever, the new settings have been stored. __________________ “Auto racing, bull fighting, and mountain climbing are the only real sports ... all others are games.” -- Hemingway

06-27-2008, 04:49 PM	#19 (permalink)
jembr325 Senior Member Join Date: Apr 2008 Posts: 143	You made some great points and I agree with you on most everything but methodology for reset. Thanks for posting this. Best, Jon __________________ “Auto racing, bull fighting, and mountain climbing are the only real sports ... all others are games.” -- Hemingway

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode