changed car battery on my ES5A and then power loss

Hi Bros,
I changed my battery on Monday (23 Oct) and after that, my car suddenly got less power (worse low end) and like lau hong (using straight thru muffler). Called tuner on whether my SMT6 piggyback got reset or what. He told me settings in my SMT6 won't reset and maybe my ECU kena reset and so need to let the car relearn again. Now si bei sian. Anyone kena this b4?

Hi bro, thanks for letting us discuss your situation.

Let me add in my piece here.

I feel that when they change battery they DID do a connect. that's why my headunit's setting is ok. But they must have done something to reset or teach the ecu somehting. either a routine flash procedure or idle the vehicle too long.

i noticed that idling the vehicle for a prolong period of time retard the vehicle. esp so for auto.

And I've heard rumours that sometimes the mechs do use your head unit to blast music while they work on other cars or have lunch.

piggy back mappings do not get override that way.

one more possiblity is the new batt is diff from the old batt so causes a diff in feeling. - butt feel maybe

Another possible area is the engine oil. nothing to do with your battery here. i noticed that Shell Helix is indeed a F***up oil. somewhat like u need to run it for a week or so to "smoothen it".

I'm not using it anymore.

My very last svs with KM was at Jurong. and uses OWS racing NA. when i drove off, I do not have this "power lost" feel anymore as when I left the car there for a whole afternoon. in fact the car felt even more fun to drivde after a week or so.

( aside: engine oil does need to run in, and once it runs in, the its true feel can be experienced)

fishy huh

Rookie wrote:

Hi bro, thanks for letting us discuss your situation.

Let me add in my piece here.

I feel that when they change battery they DID do a connect. that's why my headunit's setting is ok. But they must have done something to reset or teach the ecu somehting. either a routine flash procedure or idle the vehicle too long.

i noticed that idling the vehicle for a prolong period of time retard the vehicle. esp so for auto.

And I've heard rumours that sometimes the mechs do use your head unit to blast music while they work on other cars or have lunch.

piggy back mappings do not get override that way.

one more possiblity is the new batt is diff from the old batt so causes a diff in feeling. - butt feel maybe

Another possible area is the engine oil. nothing to do with your battery here. i noticed that Shell Helix is indeed a F***up oil. somewhat like u need to run it for a week or so to "smoothen it".

I'm not using it anymore.

My very last svs with KM was at Jurong. and uses OWS racing NA. when i drove off, I do not have this "power lost" feel anymore as when I left the car there for a whole afternoon. in fact the car felt even more fun to drivde after a week or so.

( aside: engine oil does need to run in, and once it runs in, the its true feel can be experienced)

fishy huh

========================
Thanks for your reply bro.
I was there (in Jurong) when they changed the battery, took about 10 mins. Didn't do anything else. After I drove off, I felt the difference immediately. I was there not to service the car but to change the battery only.... si bei sian now...

probabaly will need to let the car charge the batt a bit before it goes back to it's original feel huh?

but one thing 's for sure. this brand o f batt is not good!

Rookie wrote:

probabaly will need to let the car charge the batt a bit before it goes back to it's original feel huh?

but one thing 's for sure. this brand o f batt is not good!

which brand brother

Foxbat wrote:

Rookie wrote:

probabaly will need to let the car charge the batt a bit before it goes back to it's original feel huh?

but one thing 's for sure. this brand o f batt is not good!

which brand brother

Amaron, the green one.

HUH! surprise! i tot it was the black no-brand one u are still given. Was thinking of using Ameron next. But know that it's made in India

Must check around a bit liao. thanks bro.

LeukicMan wrote:

Foxbat wrote:

Rookie wrote:

probabaly will need to let the car charge the batt a bit before it goes back to it's original feel huh?

but one thing 's for sure. this brand o f batt is not good!

which brand brother

Amaron, the green one.

Hi LeukicMan,

I juz change my battery 2 weeks ago, doing my 60k maintenance... also amaron brand... but din experience lose of power.

They use another battery as back-up so that the voltage still goes thru...when they replace mine.

ahren wrote:

LeukicMan wrote:

Foxbat wrote:

Rookie wrote:

probabaly will need to let the car charge the batt a bit before it goes back to it's original feel huh?

but one thing 's for sure. this brand o f batt is not good!

which brand brother

Amaron, the green one.

Hi LeukicMan,

I juz change my battery 2 weeks ago, doing my 60k maintenance... also amaron brand... but din experience lose of power.

They use another battery as back-up so that the voltage still goes thru...when they replace mine.

thanks for your advice but kind of late now. They didn't use another battery as back-up lah, that's why..... si bei sian lah.....

LeukicMan wrote:

ahren wrote:

LeukicMan wrote:

Foxbat wrote:

Rookie wrote:

probabaly will need to let the car charge the batt a bit before it goes back to it's original feel huh?

but one thing 's for sure. this brand o f batt is not good!

which brand brother

Amaron, the green one.

Hi LeukicMan,

I juz change my battery 2 weeks ago, doing my 60k maintenance... also amaron brand... but din experience lose of power.

They use another battery as back-up so that the voltage still goes thru...when they replace mine.

thanks for your advice but kind of late now. They didn't use another battery as back-up lah, that's why..... si bei sian lah.....

mine has the same prob as yours. but my Head unit setting wasn't lost .... what could be the reason

my power resumed yesterday (happy like bird). According to Bro Vic, most probably the ecu kena reset during battery change and so will take a few days to relearn again. Whew....

Was about to tell you that....

george wrote:

Was about to tell you that....

me too