Hi,
I am going to start tuning soon with my Cobb Accessport and software. I would like to know if anyone has any tunes that they have been already built up.

13b M/T 6 port. Currently stock porting with all of the suggested upgrades. AEM CAI, Ignition Upgrade to LS, BHR Midpipe with no Cat, HKS Hi-Power Single Exit Exhaust, Coilovers, Adjustable Sway Bar Links. Will be swapping to half bridge port motor soon.

Any help or advice is always appreciated!!!

Thanks
Michael

 

Someone elses tune for their car, in their climate, with whatever engine health and fuel quality they have, with whatever health their ignition coils are in or what heat range spark plugs they are using... yeah should work seamlessly on your car. [/sarcasm]

Advice: get your car tuned correctly rather than grabbing some tune done by who knows with whatever questionable quality and experience. Also good luck getting help/support with hardware/software from a company that no longer supports it. At this point in the Rx8's life, the cobb is a bit of a waste. Also even with all of those mods... theres hardly any power to be gained on a naturally aspirated 8 with standard bolt ons on a PORTED motor, with even less noticeable gains on a stock/non-ported motor. Better off selling the Cobb and buying a rotary compression tester and a case of premix, and use the tester to check your engine health every 4-6 months and monitor it over time/use.

 

Yeah, I already know all of that information and am aware that the Cobb Accessport is no longer being supported. Atmospheric Air Density, elevation, engine health, all factor it to tuning. Doesn't hurt to see and review data from other people that like to share and pass along the knowledge...

 

By the way, I am already premixing and have a Sohn adapter setup installed...
I am not a newbie when it comes to Rotaries.
Own a GSL-SE, GSL with a 12a Bridgeport, S5 Turbo Motor waiting to be installed with a Haltech running 8 fuel injectors..

 

years ago when i got my cobb and tuning service from jeff (mazda maniac) it came with his "base tune" which iirc was basically the stock tune with the fan turn on temps lowered and the omp turned up. after sending him logs he would review the data and make changes from there. even after several changes to my tune doing it remotely it was much better having him tune it on a dyno in person

 

Good knowing you arent new to rotaries, so you understand the care required for these engines as well as what to look out for and what not to do. There is something worth noting however,

Due to characteristics of the Rx8/Renesis specifically, it doesnt exactly benefit from modifications and tunes the same way older rotary engines did. Speaking for the engine core itself, you could almost consider it a somewhat aggressive factory port design compared to older engine port designs with higher compression rotors and a side port exhaust without overlap.. Outside from the core itself, Mazda did a fairly good job with the manifold runner and intake design.

The best aftermarket intakes available for this platform may offer 5whp at best with tuning. The largest increase in power comes with removing the catalytic, and even then youre talking 20whp max with tuning. Anything and everything after that may as well be considered style points or reliability upgrades with no notable benefits where power is concerned even with tuning. If you add all the other kind of mods out there like catback exhaust, header manifold, ignition coils, porting the motor, etc etc etc on top of having a intake and catless exhaust, youd be looking at maybe 35whp after tuning on a healthy engine.

If you are familiar with how to tune a rotary, you may as well begin with taking a base map and lowering fan on temps and raising the speed for fans off as well as increasing the OMP rates by maybe approximately 15% across the board to a max of 60 (I believe that is the max setting for the OMP if memory serves me correctly).

Full disclosure, I'm still learning on the tuning of a Renesis, so I cant and wont advise what to do beyond that. I may be familiar with what gains you may expect based on many other users experience as well as gains I myself have experienced with modifications/upgrades and other people revising tunes on a N/A platform and I have used a Cobb before (Last time I used a Cobb was 2015 before selling it), hence where my input is stemming from. I am starting to learn the software MazdaEdit as that is what I have and had my tuner adjust things on my car using

 

Thank you for sharing your experiences and knowledge. All information can help my learning curve when playing with the Renesis Motor.

Using the Cobb currently, because that is what I have available. Will upgrade to Mazdaedit, Versatuner, Adaptronic or Fueltech when the opportunity presents itself.

I am definitely not expecting to put out the numbers we all know the 13BT S5 and 13B-REW can produce. But am definitely trying to wake up and access any untapped potential power that may be available with the moderate performance modifications. Until I can swap my motor setups.

Plan to rebuild my spare 13b-MSP using 13b 9.0 Rotors and rotating assembly from a Turbo motor to handle boost better in the future.

 

Should you want to go that route, realize that you will also need to have the sides of the rotors machined to also have the additional oil (scraper) ring found on the Renesis engines that is not present on all non-renesis rotors. Depending on your whp goals, might be cheaper and easier to go with machined renesis rotors for REW apex seals. Im turbocharged and have unmodified renesis rotors with all OEM mazda seals and I'm sitting at 10psi 295whp as per my last dyno session. Running E30 fuel currently, and I'm in the process of additional upgrades and modifications to reliability hit 13psi with good IAT's and fingers crossed get somewhere around 330-340whp at that 13 psi.

 

it is still supported for tuning; in addition to having a functioning Cobb device you’ll need to pay a $150 - $200 fee to take an online tuning class and then you will gain access to the software and base tunes for your vehicle, and then you’ll need to tune it. The info is on the forum and it looks like your search skills are in need of exercise ...

if you want someone else to tune it you can try to track down MazdaManiac further learning how to search.

good luck
.

 

Thanks for the info.
I actually have searched and done the research on the Club site and many other resources. I am aware of MazdaManiac and will reach out to him when needed.

Actually trying to get more posts to unlock my account, so I can create posts on the Wanted ads for additional parts needed. Hopefully this will happen sooner than later.

Currently can only create posts in the New Member Forum.

 

the potential problem you have though is if the handheld device goes bad or fails while the software is married to the PCM then you’re totally hosed. Because there’s no support for repairing the device that I’m aware of. The same would be true if the PCM bricks. You’d likely just be better off going to the Versatune system instead since they’re actively supporting it.

.