Update: Its been over 3 weeks since the install and I have to say that I don't "feel" any difference in power.........but like I have preached many times in the past, I would not "feel" 5-8rwhp from 6-7krpms.

 

Guys,

The reason you feel a "difference" after the ECU reset, is because it sets your transmissions settings back to factory settings. Your car becomes a grandma car after a week or two of normal driving.

I also reset my ECU, but it's only because I want my transmission to respond better. That's it.

No need to reset after every mod. The ECU reset won't do anything for your mods.

 

Guys I have to say that a ECU reset can indeed affect the power curve of the engine.
I've proven it on the dyno multiple times. It won't always do it... different cars will react differently. But I've seen that it can make a difference.

For example:
On EK's automatic a ECU reset made absolutely no difference at all on the dyno.
On my 6mt it fattens up the torque curve and HP above 4K. I've dynoed it multiple times.

Results will depend on how you drive, the gas being used and your cars state of tune. It doesn't always make a difference but the potential is there. You won't know untill you try.

 

Great info here. About 90% of the board thinks ECU resets do nothing ever let alone adjust the AF ratio. I stopped arguing with proofless know it alls in 2003 re this issue.

 

That's because they don't know how the ECU works.