Replaced a Dying Battery and Now Car Seems a lot more Responsive? Normal?

madaz

Possibly a newbie question but I recent replaced the stock battery with an Optima Red Top and my 370z now seems a lot more responsive to my shifts (I have a 6MT Touring no Sports Package). Before the shifts seemed a lot slower and now they're much quicker especially from 1st to 2nd and also 2nd to 3rd there is a noticeable change as well.

I decided to change the battery because I pretty much needed to jump start the car every 2-3 weeks if I didn't drive it enough.

Can't say I'm complaining but just wondering why a simple change in battery seems to have yielded these results. Is this normal and supposed to happen when you change the battery?

Thanks!

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My 2009 Nissan 370Z Touring w/ Nav Pearl White 6MT
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SouthArk370Z

If I had to guess, I'd say the ECM was being reset by loss of power and never got to complete the auto-tuning routines. Now that power is maintained to the ECM, the engine is running better.

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darkphantom

Removing the negative battery terminal supposedly resets the ECU and it feels more responsive early on. I think over time as it adapts, it will behave a certain way.

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madaz

Thanks for the response guys. Makes perfect sense.

So would the car gradually become less responsive as the battery life decreases or could you just take out the battery and put it back in again to "reset" the ECU to regain the responsiveness again?

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My 2009 Nissan 370Z Touring w/ Nav Pearl White 6MT
Tints 17% Front, 5% Back | Plastidipped Emblems | JDM Rear Fog Light Installed

littlejuanito

If the above statement is correct, is it ok to reset ECU every so often to maintain engine responsiveness at all times?

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