Visconti Tuning retunes G37 with EcuTek
 

Hey guys

Recently worked on a G37 and the customer out up a review with good info in another forum, thought I repost here and share

Let me know if you have any questions!

Car: 2009 G37xS Sedan 7AT Mods:

Ark grip catback exhaust, Fast Intentions RHFC's, R2C SRI

Uprev tune:
My first impression of the Uprev tune was that it a nice improvement over stock. I had my tune done immediately after installing my RHFC's and felt the difference in power immediately, especially in the mid-range. There was also noticeably less throttle lag. The Uprev tune came with 3 different maps. Tune, valet, and security. You have the ability to switch maps on the fly but be careful, there were a couple instances where I couldnt switch out of the valet map with out pulling over and restarting the car. During everyday driving the transmission felt noticeably harsher. In stop and go traffic traffic the downshifts were harsher and the car sometimes seemingly had a hard time choosing what gear to be in. Lastly there's there's A/F ratio and HP/Torque gains which will be shown in dyno sheets later.

EcuTek Tune:
My first impression of the EcuTek tune was holy crap. During the first test drive I was in shock of how much more alive the car felt. The throttle response was great and the shifts with the paddles happen almost instantly. Huge improvement over Uprev in those departments. Like the uprev tune, you feel really feel the power in the mid range but it pulls right through the upper band too. During everyday driving the EcuTek tune feels just like stock. The shifts in stop and go traffic are smooth and I didnt experience and jerky downshifts like I did with the Uprev tune. The EcuTek tune only came with one map so I wont have that added piece of mind should I ever valet the car. New updates are expected in the next month or so hopefully something is in the works.

Now for the Dyno Results All these pulls we're made on the same mustang dyno, on the same day.

EcuTek Vs Stock Vs UpRev

http://i1244.photobucket.com/albums/...ockVsUpRev.png


UpRev Pulls

http://i1244.photobucket.com/albums/...mack/Uprev.jpg

EcuTek Pulls (The Tune currently on my car)

http://i1244.photobucket.com/albums/...cuTekDynos.png

Hopes this helps anyone who was wondering about the benefits of one tune vs the other. I am by no means an expert this is just my personal, first hand unbiased experience with each of these tunes. The car simply drives better and is more responsive with the EcuTek tune.


http://i1244.photobucket.com/albums/...smack/dyno.jpg

Sent from my iPhone using Tapatalk

Nice. Good to see some solid nice gains. Afr seemed to clean up nicely.

Do you happen to know when his Uprev tune was done?

Thanks.

In the past a few have thought the majority of my gains were with the fueling.

You can see in the dynosheet comparing the three tunes that I'm not leaning the car out or at least most of the gains aren't coming from that.

John

Yes, it was done by another Shop in New York about a month go.

I'll shoot you a PM.

John

And was the throttle table adjusted on the Uprev tune? Was the line pressure for the 7at substantially different between the two?

Not throwing rocks, just trying to see things apples-to-apples.

Hmm...seems ill be keeping my osiris tuner, simply cuz i run manual, there are few things i would like to change but, none that ecu tek offers and i do not want only one map, currently i have 4 gas eco, rain, valet, and race. I would like to see the difference between boosted capabilities where i hear ecu tek has an upper hand.

It's different tuners so it'll never be apples to apples..

I let the customer drive the car with the stock tune on it for 2 days, and he said that he noticed the shifting wasnt as good and the car had less throttle response.

Customer also said that with the EcuTek tune the shifts were firm when he wanted it to be firm, he has a G37 so he's not on this forum

John

For right now the UpRev might be better for you, stick with it!

Obviously. That doesn't mean we don't want to make it as close as possible. Most Uprev tuners seem to neglect the throttle tables. They throw on their base map, tweak it a little and send you out the door.

I gotcha , bring on the questions, I'm here to answer.

Just sometimes it feels like you guys give me a much harder time than other vendors when I'm one of the few that continues to post data. :tiphat:

That's the first I've seen of a back to back comparison between a car tuned on Uprev and Ecutek, so that should go a long way.

I think Ecutek's put their vendors in a bad spot. They tell you that certain features are coming, and then nothing happens for six months.

Feel free to blame me, I told them many times GTR was more important to finish than doing the 370Z stuff.. that along with all the other craziness going on.

For the majority (NON FI) the features are just icing on the cake that they'll get when it comes out.

What we have now works very well, and offers some consistency

John

John@Visconti you mentioned consistency, so would Ecutek provide more of a consistent tune than UPrev? Care to explain.

I have a question. Will the flex fuel option offered for the GTR ever be available on the Z? I want to convert to e85 but would like to have the flexibility to switch back without having to worry about mixing... and has EcuTek been used on a turbo Z yet?

Yes, EcuTek would..

EcuTek takes COMPLETE Control of ignition timing.

Here's a datalog from a stock car with the stock flash vs my EcuTek flash.

With EcuTek installed on the car we can datalog both what the car is running for ignition timing and what it would be running is EcuTek wasn't highjacking ignition timing (see second graph)

http://i190.photobucket.com/albums/z...ps3253f538.png

What you can take away from this is how inconsistent the factory timing control is on these cars.

Nothing has changed mechanically on the car yet the factory ecu runs a different timing curve almost every time I pull the car.

For those NA guys this might not be a big deal because it's not going to blow up your motor, but on forced induction guys that extra 2 degrees of timing the ecu *might* add could be a problem.

With the EcuTek's RaceRom ignition control we are able to bypass the OEM timing logic which is in calculated burn time with real ignition maps that do what we want all while keeping Knock Control

Here's a screen shot what a factory ignition map looks like modified (took screenshot from uprev manual) & what a EcuTek ignition map looks like

http://i190.photobucket.com/albums/z...pse79feb2d.png

Now take a look at a screenshot from UpRev tuning manual for the Nissan. I highlighted the important part. They're basically saying what's true, running the OEM timing control logic the car simply does what it wants. Letting the ECU do what it wants does not delivery consistent results.


http://i190.photobucket.com/albums/z...ps17e17a10.png