RX-8 Flash Tuning WITHOUT Cobb (All models/years)
 

I've recently acquired the ability to reflash any stock RX-8 computer to tune it at will thanks to Mother Russia. It does not require any functionally useless Cobb and no monopoly bullshit to one Mazdamaniac. I always just referred RX-8 owners to Mazdamaniac because it just wasn't worth it. I'm going to be playing with this over the winter as the stock RX-8 computer is actually quite complicated. Gonna be tuning a ported RX-8 in a few weeks to get my feet wet so we will see how this goes. Look forward to results but so far playing with the it, I think it will be quite positive.

Comparing it to the Cobb, it has a lot more maps available and full DTC control so we can choose what DTC's to disable and configure others so the check engine light will still come on under certain desirable conditions. 2005 has 500+ maps, 2006 has 600+ maps! I need to get a bigger collection of stock flashes from different years to compare.

Having time on your hands is very useful :). I'll post some results as I play with the RX-8's.

On a side note, I also have the ability to tune all modern Mazda vehicles but I won't get into that just yet. Rotary only for now hehe :)

thewird

*Thumbs up*

If you flashed an rx8 ecu would it run a rx7?

If you flashed an rx8 ecu would it throw codes if it had things like emissions missing?

Do you mean if you put an FD motor in? It could but it would have to be converted to a MAF and the RX8 trigger wheel, basically take the electronics from the RX-8 and it would be limited to 35Rish power. Although that could be changed with bigger MAF's and complicated rescaling.

You can disable whatever codes you want.

thewird

CX7? For better Fuel mileage? Let me know!

Yes! That is actually how I found it LOL. My dad just bought one and was complaining about fuel economy and my searching led me to this. I could both improve the fuel economy and give it more power as well. I'm assuming you have the 2.3 turbo model. What year?

thewird

Great now I have one stop tuning.
Good going Marco's

I was just wondering if there were any benefits to running the rx8 ecu over the pfc, but it sounds like it would be a lot of work for no gain.

That would be awesome, the thing is TERRIBLE on fuel, it's a 07 with the 2.3 Turbo.

The Subaru guys do something very similar with all the reverse enginnering. It's to a point where they figured out how to convert the stock maf ecu to be speed density. Would be an option for turbo rx8s but there probably isn't enough memory for any boost control.

The only problem I see with computer flashing these days is that cars with OBD II connections will be emission tested via the ports. My emissions and alignment bud has had the the machine for about 2 months now (They all need training :P) and showed me that when an ecu is tampered with, it fails new emmisson standards starting next year and get reported to the ministry.
Just make sure y'all got a spare to throw back in before testings!!!

Tune my speed6??!! It's horrible on gas and could always use more power. PM me your cost please.

Wouldn't make sense unless your putting it in an RX-8.

There is no need for a MAP system. I don't think it will ever happen. The full standalone's do a good job at that.

Yah, can get about ~30-40 km extra per tank depending on driving style, in addition to more power and better response. I did an extreme amount of research already for this particular engine so most of the legwork is already done. Just as a warning though, the turbo's seem to go @ 100,000+ km (smoke etc.). Check this out...

http://imageshack.us/a/img252/3699/500km.jpg

How exactly would analyzers know the ECU has been tampered with? The stock map is read, values that are needed are modified, and then the map is loaded back onto ECU. The ECU still functions the same except it has new targets for its maps. It would be the same if the Manufacturer came out with an updated map and reflashed the vehicle. Worst case, I could always offer a to reflash the OE tune back for emissions purposes but I don't think it will be required.

Guys calm down lol. Just because I can, doesn't mean I want to atm. I'll look at cars on a case by case basis as time allows. I would need the car for a few days to make sure are changes are in a positive direction without issue. I'm not sure how much I would charge for something like this, depends how much overall work it is. PM me if your seriously interested.

thewird

Mazdaedit.....nice!

From my understanding the new E-tests rely on readiness codes checked by the ECU to pass E-tests these days.

If your car has a shit 02 sensor, it will not pass the 02 sensor readiness test and fail the new E-test. It will not show you why it failed. You must take your car to a dealer or competent shop to scan and check for faults to determine what did not pass the readiness test.

So from my understanding, Mazdaedit can disable these readiness codes if you wish. I would assume if the readiness code is disabled, the E-test will not pick up on it and pass the car.

I have no first hand experience with Mazdaedit yet, so we'll see.....

BTW I work for an independant Porsche/BMW/VW shop and am all too familiar with readiness codes, we use factory software for diagnosis and use the readiness codes to diagnose faulty emissions related CEL's all the time. So yes I kinda do know what I'm talking about lol.

Yup, I prefer to call it RussiaEdit. The guy is so hard to talk to, I think he google translates everything lol.

Is the readiness code a single code that the tester looks for or is it based on if their are DTC's that have been triggered recently?

From my understanding of the software, it lists all the DTC's and you can disable the one's you don't want or modify the tuning parameters for it not to trigger the DTC instead. It's all terribly under-labeled so they're will be a lot of guesswork and trial and error to figure it out. I'll get they're eventually :)

thewird

MAP is generally easier and cheaper than upgrading the maf or going to a blow thru. Also, why would you go stand alone when the stock ecu can have speed density, antilag, flat foot shifting AND "pass"emissions when disabled. And yes, I actually went to an emissions station with no cats and the codes disabled and passed no problem when the plugged into the ecu. I'd rather pay $130 for a cable than $2000 for a stand alone that won't pass emissions.

None the less, outstanding work on this and definitely keep it up :)

I agree MAP is easier to tune but I don't think its needed. Although I had your opinion a few years back and had closed eyes to the usefulness of MAF tuning. In the end all roads lead to the same result, its just how you go about it. If someone comes out with an a non-monopolized solution to a MAP implementation, I'm all for it though.

thewird

pfft

My daily crap box gets me 20-21km per L of gas. I bet the car above has a tank bigger than 25L :lol:

Now if my car wasn't so damn ugly :scratch:

Yup seems about right 500-520 the light comes on... It has 105k turbo is ok, it's the Wifes car, so don't need more power. However the Passenger side engine mount likes to also go at 100k, 220 dealer cost, 68 at OnlineMazdaParts.com

It has a 80 liter tank and it needs premium, honestly my old TII got better mileage, I could pull off 600 before the light came on. It was right out at that point, so maybe not better, but Similar, with almost double the power. No direct injection, no emissions, it's crazy they can't produce something fun, useful, and fuel efficient.

I got over 600 km on a tank of gas (Petro-Canada Ultra 94) with highway driving on my Pirelli P Zero Rossos inflated at 36 psi. I'm feeling pretty good about that – I got into the boost a few times getting on to the highway and passing slow traffic. The low fuel light hadn't come on yet, either, before I filled it up again.

80L and only 500km, I might be able to get that out of my FD lol

It's actually a 69 liter tank.

thewird

:nod:
You need a true road trip (DGRR) 600 km to a tank with lots of boosting and leaving cheapo IAN in my dust. Tooling around locally lucky to get 450-75 but never buy a FD for it's gas mileage and it's still a lot better that my RX-8, go figure! If I drive my 8 hard 300-50 to 65L.:scratch:

When I had the US 5th gear in my FD, I could get 600+ km to a tank highway driving on my ported motor :)

thewird

FML, Pettit Racing flashed ECU's have a changed security code so I can't tune them. Gotta figure out how to flash it back to stock without sending it back to Pettit Racing or the dealer.

thewird