I haven't reset the ECU since well before putting the turbo on and yesterday, I accidentally killed the battery, by keeping the key on IGN. So I jumped it, and went for a run. First and second noticeably way faster between 7500-9000.

It didn't klick that the extra kick might've been from an ECU reset. Have any of you guys with SC's and the factory ECU, or turbo with the factory ECU noticed this effect before?

I'm only running 5 lbs of boost. Around 12.3:1 A/F at WOT

 

Have the Vortech S/C kit and I killed the battery as well very recently. The CEL was on for the first 5 miles after jumping it so I drove carefully. When it went off I was curious to see if there was something wrong so I brought the car up to about 8500 rpm and noticed nothing different. If the car was stronger I couldn't notice it.

I'd be curious to know if anyone else had the same thing happen as you.

 

Here's my thought. After driving many, many miles without an ECU reset, the ECU starts to clock in input from the knock sensor. I wonder if a given number of knocks puts the ECU into the "this guy must have crappy gas where he lives" ignition map. It has to be ignition, because nothing changed with air/fuel. I totally wish I would've been logging timing advance so that I know for sure.

But it would be interesting to know if a few knock events puts the ECU into a map with less timing advance, which would also produce bad fuel economy and lower egt's. Could be a fail-safe that Honda put in, so that if some idiot is constantly putting 89 into the S2K that it won't grenade itself over time.

 

that would be my guess too. That the ECU detects that something is not "normal," and will basically try to force your car to run safer...resetting the ECU should clear those CEL's and codes, and perhaps allow your engine to run more like you want?

Now, you get rid of the bad stuff, but you also lose any good adjustments made by your ecu right?

 

Yeah, but on days when you run some octane boost or high octane gas, you might want to reset.