How do you reset the ECU on a NB
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How do you reset the ECU on a NB
Hi
Anyone know how to reset the ECU on my NB (10AE)? I assume you just unplug the batttery for quarter of an hour or so but someone must know for sure.
The plan is to run a tank of 98 through next trackday. I know that is a controversial idea but apparently to give the best chance of any gain the timing needs to be reset.
Thanks
Nick
Anyone know how to reset the ECU on my NB (10AE)? I assume you just unplug the batttery for quarter of an hour or so but someone must know for sure.
The plan is to run a tank of 98 through next trackday. I know that is a controversial idea but apparently to give the best chance of any gain the timing needs to be reset.
Thanks
Nick
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How do you reset the ECU on a NB
Hi,
Found this on www.miata.net
1) Disconnect negative battery cable.
2) Depress and hold brake pedal for 30 seconds.
3) Reconnect negative battery cable.
Regards,
Anthony
Found this on www.miata.net
1) Disconnect negative battery cable.
2) Depress and hold brake pedal for 30 seconds.
3) Reconnect negative battery cable.
Regards,
Anthony
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How do you reset the ECU on a NB
I believe it's to drain any residual power being stored in capacitors etc which might keep the ECU memory alive
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I guess as jif said this is the easiest way to drain any remaining power in the supply to the ECU (could just as easily use headlights/horn I suppose) - but this is interesting considering that I would have thought the brake lights wouldn't complete a circuit without a key in the ignition?
Do the brake lights work without a key?
(My Haynes manual is on loan so I can't check - and I'm not by my car...)
Do the brake lights work without a key?
(My Haynes manual is on loan so I can't check - and I'm not by my car...)
(z)
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How do you reset the ECU on a NB
Just checked my 1998 NB. The brake lights do come on without the key in the
ignition.
Don't think I've come a cross a car where the key was required to enable the
brake lights.
ignition.
Don't think I've come a cross a car where the key was required to enable the
brake lights.
Red 2006 NC Tiptronic
FIX A PC
FIX A PC
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How do you reset the ECU on a NB
on 18/09/2007 8:25 a.m. Grant wrote:
same.
Thanks Grant
well that answers that then I just checked my OTM and yes, it is theJust checked my 1998 NB. The brake lights do come on without the key in the
ignition.
Don't think I've come a cross a car where the key was required to enable
the brake lights.
same.
Thanks Grant
(z)
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Re: How do you reset the ECU on a NB
Stop showing off... what the hell is an OTM????zorruno wrote:....I just checked my OTM....
Other Terrific Manual....?
Old Trusty MX5....?
Outdated Terrrible MX5...?
We'll probably have to start a new thread just for more OTM possibilities I'm sure will get posted.
Gazda in the white HOT Mazda
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How do you reset the ECU on a NB
poison said on 09/18/2007 07:03 PM:
IAC, & thanks to Paul Williamson there is a good list here IIRC...
http://www.photec.com/home/Williamson/acronyms.htm
...YW
(Search ref: MX5 Miata Acronyms)
In my case a commodore, but YMMV.... what the hell is an OTM????
IAC, & thanks to Paul Williamson there is a good list here IIRC...
http://www.photec.com/home/Williamson/acronyms.htm
...YW
(Search ref: MX5 Miata Acronyms)
(z)
Just remembered i didn't report back. Frankly I can't tell the difference on the 98 Octane, but given you are only supposed to get an extra BHP or two anyway I suppose you wouldn't expect to. I will keep using it for track days tho- for the very minor extra it costs it seems worth it on the off chance it does make a difference.
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How do you reset the ECU on a NB - Fuel Octane (AGAIN)
Sorry Moderator but I have to comment….
It’s a very common misconception that a higher octane fuel will give more power… sadly it doesn’t. But it does allow you to modify the engine for better performance by changing the ignition and/or valve timing, increasing the boost or compression (all within limits) without pre-ignition and engine damage. People often claim they could ‘feel’ the difference with the higher octane, and to them I suggest they give me a call I and I will sell them some $2000 ‘directional’ speaker cables so they can ‘hear’ the difference too. All just the placebo effect….
A few years ago a company in Italy (I think) invented and trialled a special under seat device that would make any car sound and feel like a Ferrari for the driver. Every single driver said the same car was much faster and handled better. The device never got off the floor as there were too many crashes due to the perceived extra performance and handling. It’s really the same as some people thinking red cars are faster… seriously please…grow up…think about it… clearly the white ones are faster.
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It’s a very common misconception that a higher octane fuel will give more power… sadly it doesn’t. But it does allow you to modify the engine for better performance by changing the ignition and/or valve timing, increasing the boost or compression (all within limits) without pre-ignition and engine damage. People often claim they could ‘feel’ the difference with the higher octane, and to them I suggest they give me a call I and I will sell them some $2000 ‘directional’ speaker cables so they can ‘hear’ the difference too. All just the placebo effect….
A few years ago a company in Italy (I think) invented and trialled a special under seat device that would make any car sound and feel like a Ferrari for the driver. Every single driver said the same car was much faster and handled better. The device never got off the floor as there were too many crashes due to the perceived extra performance and handling. It’s really the same as some people thinking red cars are faster… seriously please…grow up…think about it… clearly the white ones are faster.
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Gazda in the white HOT Mazda
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cars with knock sensors such as the NB WILL definitly see a difference in performance as the ECU is always trying to run the most advanced timing it can get away with until it senses knock, then it backs it off....
tests done on a Gen 3 Holden V8 showed that the car run on 91 made not much more power than a V6 as it was knocking so bad...when run on 98 the power came back......now i always laugh at try hards putting 91 in thier SS commodores.....
Also even though 98 costs around 5% more..we actually get around 7-8% BETTER mileage from it, so it is ABSOLUTLY WORTH EVERY CENT!!!!
tests done on a Gen 3 Holden V8 showed that the car run on 91 made not much more power than a V6 as it was knocking so bad...when run on 98 the power came back......now i always laugh at try hards putting 91 in thier SS commodores.....
Also even though 98 costs around 5% more..we actually get around 7-8% BETTER mileage from it, so it is ABSOLUTLY WORTH EVERY CENT!!!!
RED '90 TURBO.
SCARING PRIUS DRIVERS SINCE 2002
SCARING PRIUS DRIVERS SINCE 2002
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How do you reset the ECU on a NB
Good point about the knock sensor, hadn't thought of that, but now thinking about it.... isn't the knock sensor like a safety valve in principle in that it backs off the timing quite severely in the rare occasion knocking occurs, and surely it shouldn't normally operate under heavy acceleration, otherwise when knocking occurred the power would suddenly die off. The knock sensor I believe is a digital sensor, in that it tells the ECU knock has occurred and to back off the timing NOW, therefore it's highly unlikely to provide accurate modulating control constantly fine trimming the timing for optimum performance. All IMHO as I can't comment further as I don't quite know enough about ECU's, although I'm a controls Engineer.
And the V8's... I used to have one (but sadly not the Gen 3) I was under the impression that these engines are designed for the higher octane, thus using the lower octane will inhibit the performance due to the knock sensor having to work.
Your point 3.... hmmm... no idea. but then I do have to use 98 for other reasons...
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And the V8's... I used to have one (but sadly not the Gen 3) I was under the impression that these engines are designed for the higher octane, thus using the lower octane will inhibit the performance due to the knock sensor having to work.
Your point 3.... hmmm... no idea. but then I do have to use 98 for other reasons...
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Gazda in the white HOT Mazda
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Hi, I have always used premium in our 5 so can not comment on that, but I can say that our subie likes premium over regular every time. It may not make more power but hell it goes like a different car and returns far better mpg figures. All with out useing placebos! The difference is from stodgy to get up and gone. Where I found the biggest difference is on hill work 91 is not appreciated there. Cheers
Would you believe a small Ferrari, then how about a little red Corvette, well what about a classic red mx5.
Re: How do you reset the ECU on a NB
The most common form of knock sensor can be likened to a ceramic microphone, except that the sensed frequency is held very low by means of a weight which inhibits movement. The output signal is constantly available to the ECU as a means of controlling ignition timing.poison wrote:Good point about the knock sensor, hadn't thought of that, but now thinking about it.... isn't the knock sensor like a safety valve in principle in that it backs off the timing quite severely in the rare occasion knocking occurs, and surely it shouldn't normally operate under heavy acceleration, otherwise when knocking occurred the power would suddenly die off. The knock sensor I believe is a digital sensor, in that it tells the ECU knock has occurred and to back off the timing NOW, therefore it's highly unlikely to provide accurate modulating control constantly fine trimming the timing for optimum performance. All IMHO as I can't comment further as I don't quite know enough about ECU's, although I'm a controls Engineer.
And the V8's... I used to have one (but sadly not the Gen 3) I was under the impression that these engines are designed for the higher octane, thus using the lower octane will inhibit the performance due to the knock sensor having to work.
Your point 3.... hmmm... no idea. but then I do have to use 98 for other reasons...
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Trevor.
As a child, on cold mornings I was happy to warm my cold feet in a cow pat, but I detest bull$hit. LOL
As a child, on cold mornings I was happy to warm my cold feet in a cow pat, but I detest bull$hit. LOL
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