Right I disconnected the negative on my battery today for around 1/2 an hour - purely for safety whilst I did some electrical work (wiring in my boost gauge).

I went for a spin around tonight and the car now feels noticably faster, especially in 3rd 40-70.

I dont think its placebo as I did not disconnect the battery hoping for a performance increase just for safety.

Its an 04 fabia vrs, and I've got a dragon tuning box, decat exhaust, ccv bypass and pd160 intake on it.

Can anyone explain - or is it really just all in my head?!

Probably reset the ECU and that has somehow helped, maybe in relation to the tuning box.

I remember reading on another car forum that resetting the ECU helped with something performance or economy wise under certain circumstances, cant remember what though!!

Steve

I've heard that any remap can "lose the tune" so to speak and that a battery disconnect resets it to its best. Same for a regular map IIRC...

Have noted the same on mine, so it's not in your head :

Bas

It will re-set the adaptive learning

It will re-set the adaptive learning

Exactly, if you've been pussy-footing it around, killing the battery for a while will reset the ECU. When it comes to TRAX, I will probably do this with my car so as to reset the ecu for the track time.

Well I havn't reset the ECU since I got it this time last year, and the previous owner was a female vicar so I doubt it was driven hard haha.

Well I havn't reset the ECU since I got it this time last year, and the previous owner was a female vicar so I doubt it was driven hard haha.

It will have adapted fairly soon to your own driving style, so unless you thrash it mercilessly all the time, the ECU will reset itself from it's prior "gentle" setting.

Well I havn't reset the ECU since I got it this time last year, and the previous owner was a female vicar so I doubt it was driven hard haha.

You clearly know different clergy from me. The ones I know mostly drive like they actually do have a hotline to God!!

Hmm...i may disconnect mine tonight..

See if the clutch will forget it slipping. :lol:

by disconnectin the battery you reset the ecu which in turn does a throttle body alignment without using diagnostics. recommended every now and again especially if your car has been remapped

Wish i could do that to mine also but my taxi meter will die and lose its memory so i will have to pay £25 to get it re-calibrated.:thumbdwn:

Wish i could do that to mine also but my taxi meter will die and lose its memory so i will have to pay £25 to get it re-calibrated.:thumbdwn:

Just take it down the wessex way (NSL end) and drive it like you stole it a few times. It will learn that you want get up and go

by disconnectin the battery you reset the ecu which in turn does a throttle body alignment without using diagnostics. recommended every now and again especially if your car has been remapped

Yeah, especially on diesels, which don't have a throttle!

Thanks for the thread mate - gonna try to remember to disconnect the battery every few weeks from now on...

@taxi 219 - can you not wire up one of those plug-in 9v memory saving auto jobbies to the meter only so that it doesn't lose its memory? That way you could disconnect the battery and also it could end up saving you £'s in the future, should you need to disconnect the battery for any real reason..

Bas

Can't you just unplug the ECU?

Just take it down the wessex way (NSL end) and drive it like you stole it a few times. It will learn that you want get up and go

:eek: