[jembr325]

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.