padilla08

i haven't read anything about this before, but here goes..

i have a jdm 6 speed manual 8. of course, it has the speed limiter at 187 km/h. the SLD from HKS is waaay too pricey just to have that thing removed. plus, the cobb isn't really an option right now, because it stopped production and i haven't read anywhere that the removal of the speed limiter on the jdm 8 works. i mean it wasn't personally testified. just mazdamaniac saying that cobb says it would.

ANYWAY,

can't i just get a us version, second hand ECU for the a 6 speed manual and swap it out with mine? will that take the speed limiter off? thanks!

dannobre

iTrader: (3)

The donor ECU won't work unless it is re-programmed with as built data for your car....

You will have to pay the dealer a lot of cash and end up with the same result

An aftermarket ECU flash is your only hope....RE-A or something like that

padilla08

awww.. that sucks. i knew it was too god to be true. lol.

thanks, anyway! especially for the quick reply.

cheers!

ebb

iTrader: (7)

A racing beat flash of a 2004 ecu will work. I was using one in a 2005 car with no key or security stuff at all. I want to sell it since I don't use it now after switching to a standalone ecu.

padilla08

"Flash Process and Procedure
This flash service is performed on YOUR PCM unit. Each RX-8 PCM unit has been programmed for each specific chassis and is intended to communicate with the security “immobilization” system. For this reason we do not offer a PCM “trade-in” service, we MUST flash the PCM unit that came equipped with your car. (The immobilization information for the 2005-08 RX-8 is retained during the Racing Beat flash and is not overwritten.)"

from http://www.racingbeat.com/Mazda-Perf...rtNumber=11308

so it says there that it's not possible.

9krpmrx8

iTrader: (46)

^ Weird. Besides MM still has the Cobb available for the JDM 8's. And why do you want the speed limiter removed anyway?

ebb

iTrader: (7)

It is possible if the ecu is from a 2004, in that case it will work on a 2004-2008. I have done it. In the 2004 ecu the security is completely disabled, you turn the key, the car starts and runs. 2005 and up ecu's cannot disable the security. Read the last sentence in the paragraph above the one you quoted.

zoom44

and you get the "race" flash

MazdaManiac

iTrader: (3)

OP - What year is your '8?
Are you actually certain that it is a JDM model? Since you don't list your actual location, I can't tell.
Many people in the Asian market actually end up with European or Australian RX-8s.

In any event, the AccessPORT is still available and it removes the speed limiter on all models that have one.
At the moment, the only JDM model that is intrinsically supported is the 2004 HiPower.

padilla08

I'm pretty positive that it's JDM. As for the year, i've been trying to figure it out for the longest time, but i can't seem to find the VIN number. It's not on the dash, nor on the side of the door. maybe because it's converted to LHD? Maybe someone can help me out. This is all i could find.

http://flic.kr/p/8JYs6F

and theeen, Mazdamaniac, i thought that Cobb discontinued production for NA cars? If so, how much is a Cobb and will you still include free tuning for 6 months?

thanks a lot!

By the way, I'm from the Philippines and my car's a 6 speed manual.

9krpmrx8

iTrader: (46)

^ Weird. No VIN plate in the window? No sticker in the door jam? Did you look in the engine bay? if you are looking at the firewall, it should be engraved like this:

http://www.flickr.com/photos/9krpmrx8/5081580106/
IMG00034-20101014-1112 by 9krpmrx8, on Flickr

MazdaManiac

iTrader: (3)

Is there a sticker on one of the rear doors, just below the striker plate for the front doors.
It will have the VIN and the date of manufacture (as well as the vehicle weight ratings).

Cobb did discontinue the AccessPORT for NA apps.
However, I was able to negotiate a deal with Cobb that allowed me to become the sole, exclusive world-wide distributor of the AccessPORT for the RX-8 and continue to make them available.

padilla08

yeah, i've seen that, but check mine out. lol. i'm going crazy trying to look for my freakin VIN.



nothing on the window, nothing on the doors except for a sticker with the specs of the OEM tires and some japanese characters. i even checked the trunk, still nothing.

oh, that's awesome! i just wish that my car's and 04 so that i'll be able to use the cobb on mine. lol

XDragon8

Thread revival time

I have an 05 with MT that is basically stock with a CAT delete midpipe in AUS. I also have an 07 MT non runner parts car.

Can i use ECU from parts my car at all? Is it possible to tune the newer ECU so i can use it? I would like to keep a standard tune on original ecu and run on the newer ECU if possible.

I have read heaps about MazdaEdit, is this still a good option now? Although i have a spare laptop to throw at this i dont pretend to be a tuner!

Also any other electronics that will or wont work easily from the 07 car?

Alrhough this is the tuning forum can anyone tell me any other parts that are NOT interchangeable from 07 into an 05 car?
Thanks in advance for info.

Loki

iTrader: (1)

Changing ECUs requires reprogramming the antitheft imobilizer. If you can do that, you can swap to your heart's content, but typically only Mazda can do that.

Are both cars the same engine? hi power or low power versions? You can't swap between versions.

XDragon8

Thanks Loki. Yes both engines are high power and 6 speed. Both cars look identical except colour.

Would it be a case of taking the RX8 (plus spare ECU in hand) to dealer to do this? Any idea on costs involved? Could a decent rotary workshop do this at all? Or Mazda first stop then onto workshop to add a tune?

Can the original ECU be copied across to the newer ECU at all? I'm not so much after specific maps and the like just yet, rather just making it work for now then go from there at engine rebuild time. Your thoughts appreciated along with any others. Aware of time differences.

TeamRX8

iTrader: (25)

I’m thinking that 05 and 07 cannot be interchanged. I don’t know that for a fact, but I know that pcm changes occurred in 2006 that carried through to 2008. So 2006-2008 maybe, but not likely with 2005 or 2004. Even between 2004-2005 there were do many changes. So I’m thinking, and it could actually some down the month/year of production, but at a min I would expect 2004 as it’s own unique pcm, 2005 as it’s own unique pcm, 2006-2008 as it’s own unique pcm, and 2009-2011 as it’s own unique pcm for USDM models.

XDragon8

Thanks Team. Its a bit depressing that i am unlikely to be able to use my spare ECU/ PCM!
What are your thoughts on getting a dealer or aftermaket tuner to flash the 07 ECU for use in my 05 car? Or just give the idea away?

TeamRX8

iTrader: (25)

I’m not saying it can’t be done, because again I’m not 100% sure how interchangeable the various model year pcms may or may not be, and it just may depend on who you’re dealing with there.

I suspect a 2007 pcm would need to be married by a dealer or whoever may have the hardware to do that using the 2007 pcm mapping, but whether the person your dealing with is willing to do that (not sure how AU is on legality of it for street use) or how it may play out in a 2005 chassis is unknown.

I suppose you could reach out to someone there with the capability of marrying the modules for advice. You can’t get anywhere with any other pcm without marrying the modules to it first, even if it’s the exact 2005 version for your chassis.

Maybe a 2007 pcm would accept 2005 mapping, but I’m not sure and would be hesitant to suggest that given that Mazda offers various model year versions. Otherwise it would be more economical for Mazda to have as few versions as possible.

TeamRX8

iTrader: (25)

I should add that this is all relative to USDM too, because that’s my experience. You might reach out to Ash8 on what the various and appropriate pcm versions are for AUDM.

XDragon8

Thanks Team.

Appreciate your information. I will definiteley look into this further and see what dealer has to say. If it can be done without costing the earth, I hope to get an ECU that will run on my car. Then down the road a bit have this one tuned then run this ecu. Keeping my orininal in case it is required for a rainy day.

Brettus

iTrader: (2)

I have done a fair bit of ecu swapping . In general if it has the same 4 digit part no on the box (N3K2 etc) it will work otherwise there is only a very slim chance it will . It then comes down to if there is an imobiliser or not , if there is you need to take it into the dealer to get it coded.
Highly unlikely you will get an 07 to work in an 04.

XDragon8

Thanks Brettus. A bit of a reality check for me! I'll still look into it but now I am nowhere near as hopeful. Makes a lot of sense though that it is unlikely to work given all the input.

SpindoktorNZ

******DISCLAIMER****((( I ACCEPT NO RESPONSIBILITY AND THIS IS PURELY A METHOD I USE TO CHEAPLY BYPASS TOP END SPEED LIMITATIONS AND IT IS DONE ENTIRELY AT YOUR OWN RISK)))) top end speed limiter removal,, the cheap way. S1 RX-8 top end limit can be removed really easily, albeit a slightly hillbilly mod to make it possible and only works with manuals as the auto transmissions dont like the method and go weird. All i did to bypass this on my 04 S1 RX-8 was to simply add a single switch for my dash. I do recommend having a gps speed reader or something installed if you want to know your exact speed because my method doesnt disllay your actual speed. Due to using it very little (dont typically need to exceed 187kph) was to install a kill switch to my speed sensor that feeds the pcm/dash. Once the switch is turned on it effectively kills the speed reading into the car and your speedo will read 0 on the dash however since the car is manual it then has no idea of how fast its actually going and will allow you to run thru to max rpm in any gear you like as the fuel delivery is red via throttle position and as far as my car is concerned it thinks im flooring my accelerator in neutral and lets it rev to its limit. I have well exceeded 187 kph altho i must add that should you turn the speed signal back on while exceeding 187kph it will shut the engine off until it is back below the 186kph limit. Its very simple to find the speed pulse wire and a simple breaker switch is all that is required. Note that you may get the check engine light show up due to the speed sensor failure when the switch is activated however it will correct itself once the speedo is reconnected. Essentually the car wont limit you to a top end speed if it has no idea how fast its going. As stated doing this mod is at your own risk but i can vouch for the fact that it works very well on my 5sp model. Unsure but cannot see any reason it wouldnt be the same for a 6sp manual. Remember to interupt the signal before it reaches the ecu not afterwards. A simple google of the ecu schematic will show you which wire feeds the speed signal INTO the pcm . Interupting the outbound speed signal from the ecu will be of no benefit as the car will be aware of its speed.
please dont spam me with hater messages im simply giving instructions on how i did it without the need for anything but a switch (i have since used a max energy hypersport controller to adjust the limit properly so i could retain a speed reading and also because the max energy controller allows rpm limit adjustment for which i dont know any simple bypass method) the max energy controller was only 400usd so was a very cheap option to remove or adjust both limiting parameters and also allows return to stock at the touch of a button and also can set both lower for moments when an inexperienced driver may be driving or service work being carried out... god knows theres nothing worse than booking a service and then watching your car scream past your work while some grease monkey hammers your toy. For service work i set the top end to 101kph and rev limit to 6000rpm

dannobre

iTrader: (3)

Once again as was mentioned in the other post....

The dash runs off CAN. If you disconnect the CAN imput into the dash you are loosing the tach and the speedo and all other dash functionality

I would not recommend trying this...