This review is for a 2009 G37 Sedan with the 7 speed automatic transmission.
The car has 100k miles so this may be useful for high mileage vehicles.

The goal of tuning was to make the car feel more alive and gain midrange power for drivablity.

Mods:
Takeda Attack Long Tube intake
Beluga Racing resonated test pipes (2.5")
Agency Power resonated Y-pipe (Dual 2.5" to 3" Collector)
Custom mid pipe with dual Vibrant resonators (3" to dual 2.5")
GReddy Supreme SP Mufflers (2.5")

Tune provider:
OrangeVirus Tuning

OrangeVirus Tuning is a company based out of San Diego, California that does tuning for the Japanese manufacturers. I heard about OrangeVirus Tuning through the Mazda6 Forums and their presence there. I was in the middle of tuning my Mazda before it got totaled in a flood, so I never really got to to see the product, but I enjoyed the customer service so I returned once I bought my G.

First off, I did a remote street tune which involves sending a base file, data logging, etc. Because of this, there were some obstacles.

The first issue was that my ECU was initially unsupported by EcuTek. This isn't a big deal, all that needs to happen is you create a dump file with the ProECU Software and have your tuner send it to EcuTek to create a beta file to flash and begin tuning. And so began the second issue.

To the fault of no one but EcuTek, the file that was sent appeared to me to be for a manual transmission, but according to EcuTek was and "engine load calculation issue". This took over a month for them to figure out because OVT had to play middle man and OVT had to wait for responses from EcuTek to send to me yada yada yada... UUUGGH, but I digress. My tuner at OVT was very straight forward with any questions and concerns I had during this process.

BUT once EcuTek got themselves together and got me a working file things were finally up to speed. Turn around time for files have been pretty consistently 1-2 business days.

Opinions Time! All I can say is holy !@#$! This car really wakes up with a tune!

Before there was hesitation with throttle and shifting. If you really wanted to move somewhere you'd need a lower gear and this meant waiting for the car to decide.

As for the shifts, they are crisp and it seems like the car really knows what gear it is going to need for a given load.

And for the engine, the throttle response is instant and now I have mid range I feel was just never there. Passing on the highway is effortless, it doesn't even need to downshift most times. Unless I really want to pass someone.

I don'n have exact numbers but the car is definitely making more power. Before the tune with just mods I ran a 1/4 mile, 13.4s @ 104mph. After I ran a 12.9s @ 106mph.


OrangeVirus Tuning is a great option for remote tuning if you want something different from what is already known.

As for EcuTek tunes. Do this. It completely changes how the car feels and makes more power.

 

That quarter is amazing for those mods! To clarify, the only difference in your 13.4 and the 12.9 was the tune?

 

Yes! I was running extremely lean, especially up above ~5000RPM before the tune.

Between proper AFR and quicker shifts, it was much better.

It was also a relatively cool day, around 70F. My best run, the 13.4, was last year early September and it was pretty warm. That probably helped.

 

Dang man, that's a really good 1/4 mile. How pumped were you?

 

Mega pumped. I had to make sure I was in the right car lol. I know under 13 isn't super uncommon for 7AT G's but I was stoked.

 

Does the trans shift harder or just faster after the tune?

 

Well, when I was explaining what I am looking for in this tune, I told him I wanted fast, smooth shifts because 2 of my work days start over by overlapping with rush hour. I was tired of the trans jerking me hunting for gears and picking the wrong one etc.

The shifts definitely keep you pushed to your seat, but doesn't snap you every time. Downshifts however blip harder, especially in sport mode.

It can definitely be done though. My first file would snap you back, but I felt it was inaccurate. Likely because that was his starting point for a G or something.

 

Kinda find it funny that I commented on your exhaust vid and this one and realized you're coming form the Mazda community as well. Former 3 owner myself .

Out of curiosity....why leave Mazda? Did it have anything to do with them going Toyota on us (absolutely no performance line).

 

toyota Supra ....

 

I loved my Mazda6s because it had decent power and looked good, had nice options, etc. But basically yeah, there is nothing with power now.

 

Shoot, I would've left for anything putting out 150 HP...The 3 was good looking, comfortable, cheap to maintain, easy to work on but good lord was it painfully slow.

 

I came from a mazdaspeed3. OVT was NOT a reputable tuner there. They actually messed up quite a few speeds. Glad they did you right however

 

Oh wow, really? I did not know that. OVT was pretty well liked on the mazda6 forums. I think they separated from whoever they were with prior because they moved to San Diego last year and made a bunch of changes to the website.

 

I am in process getting custom ecutek tune done via OV, also setting up pre tune dyno run and after. Will let you guys know the results.

 

Small update, finished tuning my car using EcuTek with help from guys at OrangeVirus. All data logging was done from driving on street and not dyno. Car pulls pretty good from low RPM range.

Puts you into seat once your RPM hits 5k+ I've yet to dyno, so far my tight work schedule and tight appointment windows at local dyno jet shop wont let me.
Once I do I will post results.

My tune is based on got 93 octane pump gas, I didnt want any additional maps.

Whats nice is I can stay on same gear without downshifting and the car pulls very good.
Once it downshifts it goes bat **** crazy

Wanted to thank OV for a great tune if they ever read this post.