New VersaTuner performance tune
 

We published a new tune for Series II RX-8 today. It was developed on a 2010 RX-8 R3 with a K&N panel filter, high flow cat, and a catback exhaust. The before and after are from stock tune to the VersaTuner tune. The car was unchanged other than the tune.

https://www.rx8club.com/attachment.p...1&d=1505275865

Interesting

The difference between an rx8 with issues and a tuned rx8 with issues .

Uncorrected Dyno Dynamics numbers. Real world numbers are probably higher. Also, pull done in 5th gear.

Pull was in 5th gear and only hit 120mph? I hit 118 in 4th on my 09 R3. And I dyno stock at 181whp to 192. (Depending on the dyno which the 181-183 range is most common results)

I think you should definitely be checking for issues be it compression, plugged injectors, or bad sparks... Something isn't right on your rx8

It's not my car and not my dyno. It was a remote tuning session. I'm not sure the dyno is calibrated correctly for the car.

+1

that seems really low, why didnt they do a 4th gear pull?

not really interesting in buying the performance tune if my engine looses more horsepower..

You understand that it's a before/after plot, right? The absolute numbers are less important than the relative numbers.

That about 10% increase then.

Could be a good baseline tune if I were to consider one in the future.

Are the coils the stock coils?

yes but having a shitty baseline doesn't seem like a great start.

I'm just gonna keep on keeping my S2 stock then because all of this is a waste of time.

:yelrotflm

I'm pretty sure they were stock as I didn't touch dwell.

Took a dive here guys. I bought the VersaTuner program with their cable they offer. Flashed in the tune they are speaking of in this thread and took the car out for a test.

On start up during the cold run cycle there was immediately a more noticeable "chuckle" when giving short throttle blips. After warming up there is 20 miles of parameter learning for the ECU of which you have to drive your car gently (harder than you know when the anticipation of the new tune is right there under the hood)

Now during the flash I chose to put in launch control, and no lift shifting. While both of these do work the launch control is a bit weak. When you hit the set rpm and it cuts the fuel it does it for too long causing a slow return on the rpm,. I'm talking 3700 set rpm and when it tachs it drops to 3100-3200 before climbing back up,. A full second to second and a half per taching. The no lift shifting is "OK" it holds rpm better but at too high of a setting approx 8800. Which means your still slamming gears and not anywhere near rev matching the shifts.

Alright now all the negatives are out of the way of which all I elected to flash myself and not part of the actual tune itself.

The tune itself is great for what you are paying for. I have all straight pipes so no exhaust restrictions, and new higher flow intake, which works well with this tune,. The valves openings are pushed back a touch rpm raised by 300, new AFR, dwells and oil injection is unchanged. This has yeilded a smoother power curve, much smoother! The power climbs clear up to 9100 or so by feel. And the overall power does feel increased but I wouldnt say much over 10whp but its is more responsive.!

All said and done I would definitely buy this again, and recommend to other owners. The tool allows you to do so much to and for your car. Data logging is built into the program as well with unlimited reflashes you can play and experiment at will( and at your own risk)

Why was the pull done in 5th isn't it 1:1 ratio for a dyno which would be 4th in an RX8

I wasn't running the dyno. I was remote tuning. I was focused on power increase between runs.

Must have been done on one of those Greek dynos.

But in a 6MT, 5th gear is 1.00. 4th is 1.17 for an S2 6MT.

Any chance you'll be doing something like this for S1 cars?

So, I'm an RX8 noob. All my tuning experience was with Subarus and LS1 powered cars.

I don't expect much of a power gain in tuning the renesis but I would like to be able to take my laptop with me and tweek the car and try to get some cleaner afr's and maybe smooth out the power curve. How capable is this system? Compared to EFi live for instance?

How about compared to the old Turbo XS system that used to go in the WRX's? Cobb Accessport?

Screenshots?

Can it be expanded with an EGT or wideband?

The front O2 sensor is a wideband sensor. If you want to add more sensors, you'll need the hardware to do it. Versatuner just allows you to reprogram the factory PCM.

I realize that but have noticed in the past that the factory widebands are not able to read as quickly or accurately as some aftermarket units. In the past Ive upgraded the widebands and been able to integrate them into the factory system with a tuner, That's what I was hoping for here.

And if you are turbo the factory wide band range is not sufficient.

Any chance you are running another sale soon?

Nothing planned at this time.

ok thanks

Any plans on a catless map for the s2? Does that even make much of a difference vs a high flow cat from a tuning standpoint?

Not much difference at near stock power levels. More tunes are on the way this summer.

Would Versatune be able to delete the TPMS and airbag lights for folks with aftermarket steering wheels and multiple sets of wheels?

I assume it can also handle a cat delete.

We can only mask ECU related codes. We do not access the other modules. TPMS and airbag are not managed by the ECU, so we can not mask TPMS or airbag codes.

Isn't there a Daikei Boss hub that can take care of the Airbag light for our cars?

I've learned to live with TPMS light.

Great! Do you plan on changing the radiator fan setting to come on at lower temps in future tunes? From what I understand that would be a great benefit to these cars, and is one of the main reasons I was planning on getting tuning software this summer.

You can do that yourself very easily. You can download VersaTuner prebuilt tune and edit the fan temp signals and then flash the new tune that has their tune and your temp settings. It's very easy to find the setting for that just by scrolling through their values and can be changed in 2 minutes or less. Flashing took me about 10 minutes from when I plugged into my obd2 til I unplugged

Is there a way you can show a list of available tunes on the program currently

The tune selection is limited at this time. We are working on expanding it. You can see the full specs and available tunes here: https://www.versatuner.com/features/mazda-rx-8-gen2

Steve,

just bought the series II package and I'm pretty excited. Can a rev match option be added? My heel toe shifts are usually trash :( Giant loaves of bread for feet. Im confident that this would make a great selling feature for your product I the future.

You sir ...are dreaming !

There was a thread a while ago that involves moving the aluminum cover on the gas pedal a bit to the left to improve heel-toe.

Cars with auto rev matching from the factory usually has a way to turn it on or off on the fly. It's not something I want to have all the time.

Well Disney princesses have taught me that it' ok to dream!

maybe I'm way over simplifying the process but hear me out: Both brake and clutch pedal have switches to signal that they are depressed. Could we just tell the ECU that when the clutch is depressed WHILE the brake pedal is applied at least 50%, apply .25 second of full throttle? If the 50% brake application is too specific(maybe the brake switc, is only an on/off switch) just make it so that the throttle function only happens when DSC is switched off.

The stock ECU can't be reprogrammed using reflash software ... you can only edit existing maps .

Dang

Although this is taken from Steve's introduction:

• Add custom functionality that is not available from the factory like launch control and no-lift-shift

It does allow launch control and no lift shifting. But so far I haven't found a rev match feature.
it seems it could be possible though I doubt it would be easy.

I do wonder how that was achieved given the constraints on the stock ECU and the hardware available . I suspect it doesn't work very well ?

I'll let you know in a week or two. Depends on how long it takes to get here.

The launch control works fairly well though it doesn't hold the rpm the best. When I reached the launch rpm it cuts the fuel and it ends up dropping about 250-300rpm before picking back up again. Slow tach rate... So yes it works but could be better if they used an ignition cut and maintained the set rpm closer.

The no lift shifting can't be set to any choice rpm it is either on or not you choose at the time of flashing. If you put it on and use it then when you hit the clutch it will cut fuel til it reaches 8800 rpm the holds there and actually holds it right on it well. But this still is so high it results in over rev and a clutch dump. Would say it's only useful in a drag race situation where the lunge of power from dumping the clutch into the next gear can shave time off your run.

We use the stock rev limiter code which is fuel cut. It's possible that we may find the hysteresis value for the rev limiter which may allow you to tune the limiter for a smoother cut.

Custom code is totally possible with OBD-II flashing. We use custom code for LC / NLS.

I have looked into auto-blip, but have not found (if it even exists) in the ECU where it calculates the current gear. We can add the code to do it, but it's a major work effort considering the gazillion RX-8 ECU calibrations.

Is there no way to use the stock rev limiter coding but switch out the value of killing fuel to killing spark instead to provide a more steady abrupt limit... It would provide a much more consistent launch instead of one time getting a slight tire spin and sooid launch then the next time getting wheel hop and little more than a rough ride.

I think the issue is more the hysteresis value and cut timer than fuel cut vs. spark.

Sorry, all I heard was, "we can add the code to do it" 😀

I stand corrected .
I have Mazdaedit and the rpm limit hysteresis is defined (200) on those maps so it can't be too hard to find.
There are maps to define the gears in there as well but I have never managed to figure out how they work.