ECU Re-set

[MLCrisis]

Hi. I have read the thread on fuel consumption and all sorts of stuff on s-afc's and Apexi RMS's and the like, but I understand from a link on the Skylines Downunder site that you can re-set the factory ECU and it will re-calibrate itself, thus adjusting to any changes in intake and exhaust that you may have made.

To re-set the ECU, it is claimed that you just disconnect the battery, press the brake pedal hard once (whilst facing North on a Wednesday, no doubt!! Did the guy who designed this write games in his spare time?!!*?) and then just hook up the battery again. Start the car and it goes through a whole diagnostic routine, which should adjust mixture and timing advancement for the current arrangement. It will supposedly do all this to achieve again whatever the factory settings are, unless someone is pulling my plonker.

Has anyone had any experience of doing this? Some guys in UnZud seem to think its the Bee Knees and claim to do this regularly to keep everything up to scratch.

My reason for asking is that I have just added the pod filter, cat-back exhaust and BOV and, whilst enjoying the Darth Vader-with-a-cold-noises, I am currently using most of Iraq's future petroleum exports single handed.

Cheers.

P.S. By my standards, this is a short message!!

[Steve]

I found a reset used to help resonsiveness esp if I had been getting stuck in traffic alot and not able to rev the car hard for a while. Only seemed to have an effect on revs above 6000 - if the car seemed to drop in power above 6000, doing a reset had the effect of allowing the car to pull hard to 7000.

I dont think a reset is going to help you economy a heap, as the AF ratios are pretty much set at the factory. As far as I know it just effects the timing a little

Give it a go, it wont hurt anything, as the ecu is reset wheneverthe car is attached to a diagnostics computer anyway.

Just my 0.02c

Steve

[rev210]

for fault fixing in closed loop, good.Sometimes restores rough idle. Does nothing at all to the fuel or ignition map, so no power gains there.

[rev210]

I think I vote this mod the oldest of skyline wives tales.

[crooser]

Someone is pullin' ya plonker... You are supposed to face East!

[MLCrisis]

I did kinda wonder ....... Sounds like its worth a go if the engine is running a bit out of sorts (which it isn't), so it is unlikely to do much in my current circumstances. Worth doing occasionally, perhaps. The next step is definitely going to have to be an Apexi RMS or an s-afc, or similar - just have to decide what I need the most, benefits-wise. Thanks for the thoughts, guys.

[hippy]

i think by pressing the brakes .. all power which was connected in the car gets drained ... so everything the in the memory gets lost ... which is why its reset ... someone correct me if i'm wrong