ECU Reflash

Old 09-12-2012, 08:58 AM
  #1  
2006 S2K
Thread Starter
 
Join Date: Jul 2010
Location: Toronto, Canada
Posts: 52
ECU Reflash

I was doing some reading and wanted to find out about reflashing my ECU. I have an AEM intake and Greddy SE Exhaust. Is it nessecary to do this?
sraccord01 is offline  
Old 09-12-2012, 11:44 AM
  #2  
Hybrid Hater
 
0tyrael0's Avatar
 
Join Date: Apr 2008
Location: Cheyenne, WY
Posts: 2,446
No its not nessesary. But you are one of the few people that dont have to spend $$$ to tune the car. Because you have an 06+ you can use one of these:
http://www.scienceofspeed.com/produc...data/FlashPro/
0tyrael0 is offline  
Old 09-12-2012, 02:15 PM
  #3  
Bug Zapper
 
Marioshi's Avatar
 
Join Date: Apr 2010
Location: Sacramento, CA
Posts: 3,109
That hondata thing always makes me laugh, it just looks so much like a nintendo controller.

Marioshi is offline  
Old 09-12-2012, 04:08 PM
  #4  
Party Rock Crew
 
starrman's Avatar
 
Join Date: Feb 2011
Location: East Freakin NC baby, yeeyauh
Posts: 1,805
Originally Posted by sraccord01 View Post
I was doing some reading and wanted to find out about reflashing my ECU. I have an AEM intake and Greddy SE Exhaust. Is it nessecary to do this?
If you have a stock ecu and you have changed the intake it is not needed, but could not hurt to flash the unit. If you unplug the fuse for a few minutes then start the car and do not touch the accelerator pedal...let it idle for like 10 minutes, it relearns the information from all the sensors. I did mine when I changed my intake and it not only ran better but the gas mileage went up considerably.
starrman is offline  
Old 09-13-2012, 07:14 AM
  #5  
Hybrid Hater
 
0tyrael0's Avatar
 
Join Date: Apr 2008
Location: Cheyenne, WY
Posts: 2,446
Originally Posted by Marioshi View Post
That hondata thing always makes me laugh, it just looks so much like a nintendo controller.

Haha yeah it does.

Originally Posted by starrman View Post
If you have a stock ecu and you have changed the intake it is not needed, but could not hurt to flash the unit. If you unplug the fuse for a few minutes then start the car and do not touch the accelerator pedal...let it idle for like 10 minutes, it relearns the information from all the sensors. I did mine when I changed my intake and it not only ran better but the gas mileage went up considerably.
Yeah I wasnt sure if he meant tune or ecu reset.
0tyrael0 is offline  
Old 09-13-2012, 07:56 AM
  #6  
Senior Member
 
E30 Girl's Avatar
 
Join Date: Feb 2010
Location: Toronto, On Canada
Posts: 377
Originally Posted by starrman View Post
If you have a stock ecu and you have changed the intake it is not needed, but could not hurt to flash the unit. If you unplug the fuse for a few minutes then start the car and do not touch the accelerator pedal...let it idle for like 10 minutes, it relearns the information from all the sensors. I did mine when I changed my intake and it not only ran better but the gas mileage went up considerably.
This is an interesting concept I have a K&N intake and Skunk2 and test pipe I'd love better fuel mileage if at all possible.

Which fuse is it that you pull I think I might try this.
E30 Girl is offline  
Old 09-13-2012, 08:04 AM
  #7  
Hybrid Hater
 
0tyrael0's Avatar
 
Join Date: Apr 2008
Location: Cheyenne, WY
Posts: 2,446
Well, you could also disconnect the negative battery cable, leave the keys in the ignition (in the ON position) and keep you foot on the brake for about 60 seconds. That will drain all the electricity from all the capacitors and reset the ECU.
0tyrael0 is offline  
Old 09-13-2012, 09:10 AM
  #8  
Senior Member
 
S2000 Bob's Avatar
 
Join Date: Sep 2009
Location: Santa Barbara, Ca
Posts: 157
0tyrael0 and Starrman -

Thanks for the info on resetting the ECU! It's not something I need to do right now, but it's always good info to keep for future troubleshooting.

S2000 Bob
S2000 Bob is offline  
Old 09-13-2012, 09:45 AM
  #9  
Bug Zapper
 
Marioshi's Avatar
 
Join Date: Apr 2010
Location: Sacramento, CA
Posts: 3,109
Originally Posted by S2000 Bob View Post
0tyrael0 and Starrman -

Thanks for the info on resetting the ECU! It's not something I need to do right now, but it's always good info to keep for future troubleshooting.

S2000 Bob
Just make sure you have your radio code handy before you do it or you will be paying a visit to Honda soon!
Marioshi is offline  
Old 09-13-2012, 11:32 AM
  #10  
Hybrid Hater
 
0tyrael0's Avatar
 
Join Date: Apr 2008
Location: Cheyenne, WY
Posts: 2,446
Originally Posted by Marioshi View Post
Just make sure you have your radio code handy before you do it or you will be paying a visit to Honda soon!
.... at the risk of sounding really stupid, what is a radio code?
0tyrael0 is offline  
Old 09-13-2012, 12:40 PM
  #11  
Senior Member
 
phins2rt's Avatar
 
Join Date: Apr 2008
Location: Des Moines, IA
Posts: 1,284
Originally Posted by 0tyrael0 View Post
.... at the risk of sounding really stupid, what is a radio code?
On these cars, when the power is lost the OEM radio will go into a security mode. You will need to enter a code via the preset buttons in order for the radio to work again. No code, no radio worky! I'm not sure who they are trying to keep from stealing these but that is Honda's approach.
phins2rt is offline  
Old 09-13-2012, 12:52 PM
  #12  
Bug Zapper
 
Marioshi's Avatar
 
Join Date: Apr 2010
Location: Sacramento, CA
Posts: 3,109
Originally Posted by 0tyrael0 View Post
.... at the risk of sounding really stupid, what is a radio code?
Stock honda radios have a code that is meant to keep them from being stolen (why anyone would steal a OEM radio is beyond me). If your reciever loses power you need a code to "unlock" your stock reciever.
Marioshi is offline  
Old 09-13-2012, 12:53 PM
  #13  
Bug Zapper
 
Marioshi's Avatar
 
Join Date: Apr 2010
Location: Sacramento, CA
Posts: 3,109
JINX!
Marioshi is offline  
Old 09-13-2012, 01:11 PM
  #14  
THE STIG
 
Switchblade's Avatar
 
Join Date: May 2010
Location: NAZARETH, PA
Posts: 8,311
Originally Posted by Marioshi View Post
JINX!
13 minutes later........
Switchblade is offline  
Old 09-13-2012, 02:13 PM
  #15  
Party Rock Crew
 
starrman's Avatar
 
Join Date: Feb 2011
Location: East Freakin NC baby, yeeyauh
Posts: 1,805
I don't remember which fuse it is...but it is in the block by the drivers left leg. I think it is a 7.5 amp and it is labeled back up...but as mentioned you can just disconnect the battery...but then if you don't have your code you have to go through all that crap.
starrman is offline  
Old 09-13-2012, 02:50 PM
  #16  
Bug Zapper
 
Marioshi's Avatar
 
Join Date: Apr 2010
Location: Sacramento, CA
Posts: 3,109
Originally Posted by Switchblade View Post
13 minutes later........
For your information, I hadn't reloaded the page, so it appeared to me that we had posted at the same time. SHEESH. acting like I know how the timestamp works

Now wheres the button to mod that...
Marioshi is offline  
Old 09-13-2012, 06:17 PM
  #17  
Senior Member
 
S2000 Bob's Avatar
 
Join Date: Sep 2009
Location: Santa Barbara, Ca
Posts: 157
Just make sure you have your radio code handy before you do it or you will be paying a visit to Honda soon! Posted my Marioshi
Been there, done that, when my battery died. Fortunately, I found the radio code in the car and it was an easy reconfig. But thanks for alerting everybody.

S2000 Bob
S2000 Bob is offline  
Old 09-13-2012, 06:21 PM
  #18  
EYECELLEM
 
Join Date: Aug 2009
Location: SF Bay Area, California
Posts: 3,783
I had the ecu reflashed on my '99 M3. Now on that car it is really worthwhile. Raised the rev limiter from 6500 to 7100 rpm. Removed the top speed limiter and throttle response is great. With a cai and muffler it added about 10-12 hp and I could really feel the difference. Seems older cars are more responsive to reflashed computers.
Glenn1 is offline  
Old 09-14-2012, 05:37 AM
  #19  
THE STIG
 
Switchblade's Avatar
 
Join Date: May 2010
Location: NAZARETH, PA
Posts: 8,311
Originally Posted by starrman View Post
I don't remember which fuse it is...but it is in the block by the drivers left leg. I think it is a 7.5 amp and it is labeled back up...but as mentioned you can just disconnect the battery...but then if you don't have your code you have to go through all that crap.
Switchblade is offline  
Old 09-14-2012, 07:02 AM
  #20  
Hybrid Hater
 
0tyrael0's Avatar
 
Join Date: Apr 2008
Location: Cheyenne, WY
Posts: 2,446
Originally Posted by phins2rt View Post
On these cars, when the power is lost the OEM radio will go into a security mode. You will need to enter a code via the preset buttons in order for the radio to work again. No code, no radio worky! I'm not sure who they are trying to keep from stealing these but that is Honda's approach.
Originally Posted by Marioshi View Post
Stock honda radios have a code that is meant to keep them from being stolen (why anyone would steal a OEM radio is beyond me). If your reciever loses power you need a code to "unlock" your stock reciever.
Huh, I have an aftermarket but I actually kept my stock radio in for two years, never new that. I guess I just never had a battery loss.
0tyrael0 is offline  
Old 09-14-2012, 09:11 AM
  #21  
Bug Zapper
 
Marioshi's Avatar
 
Join Date: Apr 2010
Location: Sacramento, CA
Posts: 3,109
Originally Posted by 0tyrael0 View Post
Huh, I have an aftermarket but I actually kept my stock radio in for two years, never new that. I guess I just never had a battery loss.
Yeah, its not a BIG deal but it kinda sucks if you were just about to go on a road trip or something and you have no radio.
Marioshi is offline  
Old 09-14-2012, 11:07 AM
  #22  
THE STIG
 
Switchblade's Avatar
 
Join Date: May 2010
Location: NAZARETH, PA
Posts: 8,311
If you have done a reset or see code on your radio and need the sn to get the antifheft code from honda's database..heres what you do.

Turn off unit press and hold #1 & #6 presets while turning the radio on. The display toggles between 2 screens the first displays a U and the second screen an L. Ignore the letters that's your units serial # Ex. U1234 L4321 your serial # is 12344321. Honda just enters that on their puter and you have the antitheft code put in by honda. Beats tearing out the radio.
Switchblade is offline  
Old 09-14-2012, 11:13 AM
  #23  
EYECELLEM
 
Join Date: Aug 2009
Location: SF Bay Area, California
Posts: 3,783
I'm pretty happy with the stock radio in my '08 and since Honda added the speakers in the roll bar hoops, I have no complaints. Besides, a conv does not make for good acoustics and the car is pretty loud to being with. ......oops, sorry, this thread was about ecu reflashing.
Glenn1 is offline  
Old 09-14-2012, 11:43 AM
  #24  
THE STIG
 
Switchblade's Avatar
 
Join Date: May 2010
Location: NAZARETH, PA
Posts: 8,311
Originally Posted by Glenn1 View Post
I'm pretty happy with the stock radio in my '08 and since Honda added the speakers in the roll bar hoops, I have no complaints. Besides, a conv does not make for good acoustics and the car is pretty loud to being with. ......oops, sorry, this thread was about ecu reflashing.
Switchblade is offline  
Old 09-14-2012, 11:46 AM
  #25  
EYECELLEM
 
Join Date: Aug 2009
Location: SF Bay Area, California
Posts: 3,783
Gary Oldman, my hero.
Glenn1 is offline  
Old 09-14-2012, 11:48 AM
  #26  
Hybrid Hater
 
0tyrael0's Avatar
 
Join Date: Apr 2008
Location: Cheyenne, WY
Posts: 2,446
Yeah godda love Gary O
0tyrael0 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
L8Apex
Engine Tech / Drivetrain
12
09-10-2012 07:21 AM
duck
All Other Honda S2000 Related Discussions
6
10-26-2011 11:31 AM
groho
All Other Honda S2000 Related Discussions
17
07-31-2005 02:29 AM
hondaboy86
All Other Honda S2000 Related Discussions
2
08-27-2004 11:18 AM


Thread Tools
Search this Thread
Quick Reply: ECU Reflash


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.