PHANTOR

those who have retuned their ecu's may have a use for passing 8k. I have retuned mine, and I make good power up there.


beep beep beep beep beep

philodox

Just unattach your car battery for 10 minutes, then reconnect.. resets the stored ECU data.. problem solved.

PoorCollegeKid

Even if power drops off (although most dyno charts I've seen have the power rising until the upper rpm) you're still going to be putting down more torque to the wheels after it gets multiplied in the transmission in a lower gear vs a higher one. That's why shifting right at power peak is usually not the way to get the quickest times out of your car.

Does that wipe the "black box" memory with OBDII? I know that they can pull data off of that thing even after nasty wrecks... Maybe a good solution would be to pull the battery cables and then drie around for an hour or so just to make sure that whatever is going to be erased by that procedure as well as the short term memory is gone.

philodox

No, it will not wipe the black box that records road speed, whether the air bags deployed and safety faults parameters things like that...

It will just wipe the vehicles ECU of stored data. Remember the ECU is a learning ECU. Disconnecting the battery will wipe the memory so it will have to 'learn' all over again... the black box you are talking about is a different entity.

PoorCollegeKid

I believe that engine speed is also recorded in the "black box" in addition to the data that you mentioned, which is why I did not think that a simple battery disconnect would wipe evidence of over rev if it occurred recently. I don't know how much information can be stored in the RX8's "black box", but I know that for most cars it's rather small, allowing only the last 15-20 minutes of driving time to be stored.

philodox

correct on all points. i do want to mention that the 'black box' is 100% non-servicable. The dealer is not authorized to touch it. So you need not worry about your dealer finding out how often you peg the tach if you do the ECU memory flush.. i.e. disconnect the battery for 10 minutes or so.

PoorCollegeKid

Ah, thanks for clearing that up.

r0tor

iTrader: (1)

keep in mind drag is proportional to velocity squared and the g-tech doesn't care about drag.... so in other words the hp lost to drag at 9000 rpms at 90mph is significantly more then the drag at 6500 rpms and 65 mph

r0tor

iTrader: (1)

another thing - the rev limiter really does kick on right around 9000 rpms... which corresponds to about 9500 on the tach

Shamblerock

You guys are real paranoid. Mazda would be out of business overnight if they denied repairing a car's engine components if the power train has not been modified. They made the car to work within the boundaries that they have established. Abuse is going to the dealership with bald tires in the back while the front ones are still brand new. They can put some pressure on you but they have to stand by their warranty. That's why they gave you traction control, dsc and abs. If they allow you to turn off DSC in full (by holding the button for 7 seconds), that is a tool they gave you to use. Even in their marketing brochure they talk about turning DSC off so you can "drift". HELLOOOOOOOOOO they are selling a sports car that they know full well will be pushed to its limits regularly and repeatedly. They brag about going to 9,000 and it being the only production car that does. I even have a few videos of their own drivers on Laguna Seca shifting each time well past the beep into the 9500RPM range and flooring the car, power shifting the gears (no let off the gas when shifting) and pounding the car like it needs it becausde it loves the abuse! Sorry my man, I obviously disagree. You bought the car to have fun with it so drive it as you please within the limits they set out for you, but always ensure you are not risking anyone's life in the process! especially yours.

red_rx8_red_int

I agree 100%. The rev limiter is your friend not your enemy. Visit it as often as you can. If Mazda's position is different then they should not offer a rev limiter and should not advertise a 9k redline when the spaced apart red lines start at 8500 rpms. IIRC.

Rotary_Fan

Bryrx804, I have read somewhere else about not hearing the beep that it is connected to the audible beeps of the stereo etc and when beeps are turned off it also turns off the redline beep, may work give it a shot

gt1

I wasn't the original poster but I too cannot hear the beep (I heard the beep on other RX-8's just not mine) although I can hear a high pitched sound (maybe the engine or something else, sounds like a dog whistle ) and I did turn the Audio beep on, windows up, AC off etc...
I think it is time for me to take my 8 in... anyone have a successful resolution for this yet?