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Increase in power /short lived.

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Old 10-02-2003, 11:07 PM
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Talking Increase in power /short lived.

Driving my car i suddenly felt what seemed a surge in power the rx8 seemed to have been on steroids and felt faster thru all the gears , i wanted this feeling to last forever, however after approximately 20 minutes the magical surge left , the rx8 is still running stonger and the exhaust is definetely louder but the steroid feeling is gone , at4200 km the surge came on and id swear the volume on the radio suddenly dropped,normaly i have radio on the 4 setting this time i had to put the radio up to 7 to get the same volume strange???

Has anyone else had a similar experience .??? I have read that the ECU resets itself around 5000km but mine seems to have changed at 4200km .

Driving the car during this reset period was awesome but now that the surge has gone its still great .

Any feaseble explanation most welcome .
Old 10-02-2003, 11:15 PM
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Re: Increase in power /short lived.

Originally posted by Lock & Load
Driving my car i suddenly felt what seemed a surge in power the rx8 seemed to have been on steroids and felt faster thru all the gears , i wanted this feeling to last forever, however after approximately 20 minutes the magical surge left , the rx8 is still running stonger and the exhaust is definetely louder but the steroid feeling is gone , at4200 km the surge came on and id swear the volume on the radio suddenly dropped,normaly i have radio on the 4 setting this time i had to put the radio up to 7 to get the same volume strange???

Has anyone else had a similar experience .??? I have read that the ECU resets itself around 5000km but mine seems to have changed at 4200km .

Driving the car during this reset period was awesome but now that the surge has gone its still great .

Any feaseble explanation most welcome .
This may sound stupid, but were you somewhere where the air could have been cooler and more dense for that time?

I haven't had that particular experience, but I'm well behind in the clicks on clock stakes.
Old 10-02-2003, 11:18 PM
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There are all sorts of reasons for feeling more power, cooler air temps being a main one. But NONE of these have anything to do with radio volume!

Perhaps a sudden powerful arctic breeze?

-pete
Old 10-03-2003, 12:26 AM
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Originally posted by rpm_pwr
There are all sorts of reasons for feeling more power, cooler air temps being a main one. But NONE of these have anything to do with radio volume!
Not necessarily true - what song was on when the car felt faster? My RX-8 really gets an adrenaline rush when it hears Maniac by Michael Sembello (from the movie Flashdance ). Oh, and also Dangerzone by Kenny Loggins.

:D
Old 10-03-2003, 01:10 AM
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Have spoken to mazda technical department and told them of my experience they as usual could not give explanation ,but said that they would look in to it.

I have noticed that on cool nights and specially windy cooler nights car does go beeter but nothing like i experienced earlier, different altogether .

My car felt at least 20/30kw more powerfull by the seat of my pants barometer and it had the surge right through the gears.


B nez i know certain songs get the adredalin going but not in this case , and the radio loosing its volume was the strangest feeling .

The car was given a shot of power that i havent felt since.

Were i felt the power there are a number of overhead power lines maybe they gave the car the extra boost ?
I wish i could replicate the feeling it was awesome.
Old 10-03-2003, 01:50 AM
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Careful Lock & Load, I think you have finally discovered the location of the fabled Brismuda Triangle :D
Old 10-03-2003, 01:53 AM
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Seriously, if it can do that once - it can do it again. I went and spoke to a tech at the local Mazda Service a few minutes ago, he's finding out what he can about clever ECU things that aren't too public. Hope he can find some stuff to tell me, I'll blab it here if he does.
Old 10-03-2003, 01:56 AM
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Yeh, I've kinda had this experience too. It was a couple of weeks ago when I had about 4800km on the clock. I went for two short drives on this particular day, and the car felt like it had a real surge of power. It was enough for me to think at the time "maybe it thinks it has hit 5000km already!"

I suspect that it might have been the first cold day after a string of hot weather.

Now that I am over the 5000km hurdle, it's difficult to say whether or not any additional power has been unlocked. The only way to know I think would be to drive a car with <5000km on the clock and then get straight in a car that has >5000km and see if you can feel a difference. That would be a cool experiment for some guys to try at the next drive day.....
Old 10-03-2003, 05:15 AM
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Thumbs up

kev

The more i think about it it has to be the ECU re managing itself to a different setting , the weather was average of 24 degrees daytime , as the wife doesnt like to let me out at night as i tend to prowl and speed to much .

Curious to see if the mazda technician comes up with a valid reason for the power surge , if you can replicate it you wont be needing a turbo or supercharger.

DWG i am glad you also had a similar experience in your car.
Old 10-03-2003, 05:36 AM
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I'll tell you what, I have had my car feel like it was about to run out from underneath me a few times. Each time, I had slipped the clutch a fair amount in 1st (driving slow in traffic), and didn't floor it. Threw my head back as the car tried to take off. With traffic in front of me, I couldn't run with it, but it damn made me want to. Perhaps this is similar to what you experienced, and I'll bet it has something to with the whole open vs. closed loop thing, the load seen by the ECU, and other conditions being just right.
Old 10-03-2003, 06:35 AM
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I think this seems to indicate that there's some fairly wild horsepower available if the right tinkering is done with the ECU.

Funny, I'm a bit twiddler from way back - but I've never been too interested in engine management systems (it was all carbs and mechanical distributors in my tweaking days). For me, that all just changed :D

It's pretty obvious from the forum noise that the renesis is mechanically capable of greater things and it's the electronics that's holding it back . . . . time to play - where to start?!?
Old 10-03-2003, 07:13 AM
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Talking

KEV
There seems to be plenty of engine management aftermarket egineers out there we just have to wait until one of them re writte the obviously conservative system of the mazda ecu .

companies like UNICHIP ,MOTEC ,WOLF , MICROTECH, are constantly pushing the boundaries and rewritting engine management systems , however most dont specialize in rotaries .

FAST FOURS MAGAZINES put out a technical handbook which covers ENGINE MANAGEMENT SYSTEMS. very interesting worth reading.
Old 10-03-2003, 09:42 AM
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Originally posted by Lock &amp; Load
KEV
There seems to be plenty of engine management aftermarket egineers out there we just have to wait until one of them re writte the obviously conservative system of the mazda ecu .

companies like UNICHIP ,MOTEC ,WOLF , MICROTECH, are constantly pushing the boundaries and rewritting engine management systems , however most dont specialize in rotaries .

FAST FOURS MAGAZINES put out a technical handbook which covers ENGINE MANAGEMENT SYSTEMS. very interesting worth reading.
Thanks,

I'll go and lay my maulers on it.

cheers,

Kev.
Old 11-03-2003, 07:33 AM
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On the note about the sound / volume of your muzak changing.. I thought the environment system automatically changed the volume up and down based on the noise levels inside the car? Or is it perhaps the sound system that comes with the Aussie "leather pack" ( is it just me or did some dick in Mazda marketing take the **** of aussies on that one? )?

I swear my sound system ( stock ) does this all the time, when I fang out on the open road the volume slowly climbs as the rev's sing away and as I pull up to lights the volume seriously goes down?

is it just me or should it do that? It could be all the years working in computer rooms and data centres of course ( and all that speed in my late teens might not have helped much ).

As for your "seat of my pants 'ometer" - it's a good measure, I've been learning to gauage danger based on the adrenachrome levels in the blood and the sphincter factor my "butt 'ometer" is registering.

On another performance point - tires this time - I'm assuming that everyone's RX8 comes with the OEM Bridgestone Potenza 040 Z rated rubber. I've noticed that after a little road work, the rubber seems to be a lot softer, it's lost all if any hardness it had when it was new, and now I'm feeling a little softer deep into corners, and I've found myself backing off earlier now some five weeks since I got the car, where as I felt really solid the first two or three weeks?

Am interesting in what anyone else has felt about their tires as they get older?

As for muzak effecting the zoom zoom - I'm glad to say that I've been applying some serious amounts of field research to this very topic, and I've found that there is infact one song that will 110% increase your power without fail.

Track #10 on the CSI theme music it turns out is the Fat Boy Slim remix of Timo Maas's "To get down" - cranked all the way past eleven it's very neatly over driven low frequency ***** ***** will guarantee you an extra 20 kw on any day - trust me * grin *

Happy to provide copies on CD media by post for any who are keen to join my current field tests of my general theory of Muzak theory of Performance relativity * larf *.

I've also just today proven in field tests that John Mayers "Your body is a wonderland" at volumes greater than 5 on stock leather pack sound systems will invariably result in power loss of up to 100 kw causing a steady low powered cruise effect kicking in!!

Be warned too that John Mayer's live acustic version of "Why Georgia" can result in erratic bursts of acceleration and random high G sharp cornering - I haven't been able to nail down just why, but there you go - don't say I didn't warn you * grin *

I wonder if it might be fun to publish a muzak to power convesion table for public consumption * hmm *

Cheers,

++Dez;
Old 11-03-2003, 09:17 AM
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Heck, any reasonable justification for scientific RX8 driving is fine by me. Count me in on the objectivity tests. :D
Old 11-03-2003, 09:35 AM
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Originally posted by Dez
...I thought the environment system automatically changed the volume up and down based on the noise levels inside the car? Or is it perhaps the sound system that comes with the Aussie "leather pack" ( is it just me or did some dick in Mazda marketing take the **** of aussies on that one? )?

I swear my sound system ( stock ) does this all the time, when I fang out on the open road the volume slowly climbs as the rev's sing away and as I pull up to lights the volume seriously goes down?

is it just me or should it do that?
Yep, your sound system is supposed to do that. But isn't that what you said in the first paragraph? Not quite sure what the question is?
Old 11-03-2003, 03:42 PM
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Originally posted by Dez
[B]On the note about the sound / volume of your muzak changing.. I thought the environment system automatically changed the volume up and down based on the noise levels inside the car? Or is it perhaps the sound system that comes with the Aussie "leather pack" ( is it just me or did some dick in Mazda marketing take the **** of aussies on that one? )?
This is the Autopilot feature in the Bose that you're experiencing. I think I read you've got leather seats... hence my assumption. I've got the standard system (cloth pack) which ties the audio to RPM rather than in cabin noise levels... although I find it doesn't work too well above 8000... I don't seem to hear the stereo at all when I'm revving that hard

As for your "seat of my pants 'ometer" - it's a good measure, I've been learning to gauage danger based on the adrenachrome levels in the blood and the sphincter factor my "butt 'ometer" is registering.
"Rectum Dez, Rectum"
Dez replies... "Rectum sco?! Dang near killed him!"

As for muzak effecting the zoom zoom - I'm glad to say that I've been applying some serious amounts of field research to this very topic, and I've found that there is infact one song that will 110% increase your power without fail.
Actually I find Tool's Forty Six and Two adds about 100nm of torque. Pearl Jam's Rearviewmirror definitely adds some power as it results in my rear view mirror being full but the view out my windscreen being empty.
Old 11-03-2003, 04:14 PM
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Only have 400 in the Odometer I am still waiting to rev it up man!!!
Old 09-21-2005, 05:39 AM
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Actually I find Tool's Forty Six and Two adds about 100nm of torque. Pearl Jam's Rearviewmirror definitely adds some power as it results in my rear view mirror being full but the view out my windscreen being empty.[/QUOTE]


I have to agree with that.

Sad thing is the officer doesn't accept this as an excuse. Even the I couldn't hear the engine reving because my music was so loud.
Old 09-21-2005, 06:15 AM
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Holey cow...a 2 and a 1/2 year old thread...put on the padding man, your gonna get your ears boxed!!! ;-)

Andrew
Old 09-21-2005, 06:47 AM
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Originally Posted by 4 years to Supercharge
Actually I find Tool's Forty Six and Two adds about 100nm of torque. Pearl Jam's Rearviewmirror definitely adds some power as it results in my rear view mirror being full but the view out my windscreen being empty.

I have to agree with that.

Sad thing is the officer doesn't accept this as an excuse. Even the I couldn't hear the engine reving because my music was so loud.
I totally agree... two of my favourite tracks to play in the RX-8 :D

As a result, I'll leave ear bashing to others :p
Old 09-21-2005, 07:18 AM
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Ouch

Didn't notice that.

Was searching for ECU info and got sidetracked.
Old 09-21-2005, 07:35 AM
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No harm done to me, I enjoyed your selection of power boosting music. I was just warning you about the people who seem to have an issue with people bring back to life discussions that have been had before or are to old.

Andrew
Old 09-23-2005, 06:00 AM
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There isn't an issue at all. It is nice to reminis. Oh the good old days when we only had 400km on the clock!.

Cheers,
Hymee.
Old 09-23-2005, 11:02 AM
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Again, i agree, but tell the local repost and dredge police that ;-)

Andrew


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