Nissan 370Z Forum - Nissan 370z ecu tune by vrtuned

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Nissan 370z ecu tune by vrtuned

Vivid Racing’s VRTuned ECU flash product has just conquered the Nissan 370Z with this great increase done on our Mustang Dyno. The 3.7L 6speed manual transmission convertible was already equipped with a Stillen catback exhaust and K&N short ram Typhoon intakes. We first did a baseline of the car to test the difference with the ECU flash. The car was run in about 65F temperature on 91 octane doing a 3rd gear pull. Typical drivetrain loss for a rear wheel drive only car is about 10%. This 2010 370Z came stock with 337bhp which means the intake and exhaust added about 30 horsepower or this car and calibration was a bit stronger than normal. Only 22000 miles, all we really care about is what the difference is between our after tests and baselines. So our baseline test gave us 333rwhp and 273 ft/lbs of torque.

The ECU tune for the Nissan 370Z requires the ECU to be removed from the vehicle. The ECU is located behind the glove box, once the ECU is pulled, we separate the aluminum case of the Hitachi ECU and have to read and write the ECU in boot mode with pins connected to the programming pads. Once complete and the new program is flashed to the ECU, we then did the after test. One thing to note is with this ECU flash we can raise the rev limiter on manual transmission cars and also do a decat or raise the 02 limits for catless exhaust systems. Tested within hours of our baseline, the car then made 347rwhp and 282 ft/lbs of torque. The torque gain was pretty consistent throughout the full RPM test pull where the horsepower gains started to show at about 4500 rpm to redline. In addition to the performance gains, the throttle is much more responsive and the car revs out quicker.

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http://www.vividracing.com/blog/wp-c...-370z-dyno.jpg

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1) this is new software?
2) how come this is done in 3rd gear?

Your dyno must read really high to get 333rwhp and 273 ft/lbs of torque before a tune. Also a 3rd gear pull that kinda shows a bit of inexperience, 370z should do 4th gear pulls. i know its a mustang dyno but that just seems off to me.

Was just going to ask why it was done in the wrong gear ? Customer wanted to see a inflated number? Closer to 314WHP and 250WTRQ especially on a mustang.

Thank you for the comments and feedback! :tup:

Firstly, let me clear up why we run in 3rd gear. In all reality, a dyno is a tuning tool. 10 different dynos on 10 different days will read 10 different numbers. We certainly understand folks using them to compare the power of their cars to others, however the primary use of a dyno is to confirm the delta. The gains. That's all we use ours for. We choose to dyno in 3rd gear for safety reasons. Every car that runs on our rollers is in 3rd. In many of the European cars, you have to be as 6th or 7th gear to be at a 1:1 ratio. The last thing we want is to have a car on our dyno doing 170+ MPH when all we really need to do is a quick 3rd gear pull to confirm the baseline and then the gains.

With that said, there are three things on this dyno sheet that should be examined. The gain of 14whp, the gain of 9wtq, and the improvement in the overall powerband while using the terrible 91 octane found here in AZ.

Any further questions, comments, or concerns, feel free to fire away. Happy to assist.

-Todd

347whp/282wtq?

ummmmmmm........ :bs:

I love you guys, but those mods don't equal that much power :bowrofl:

anyone can tweek the dyno to make whatever numbers they want plus the 3rd gear thing as well.

Quote:

Originally Posted by FPenvy (Post 3101822)

Thank you for your input.

Quote:

Originally Posted by vividracing (Post 3101850)

Thank you for your input.

i'm not trying to sound rude and thank you for the professional response to my comment.

but I would honestly love to see that car ran in 4th or 5th to see what the numbers change to. I totally get your safety reasons but there's thousands dynos in the country that do this everyday with no issue.

that number is just a bit much is all i'm saying.

good luck with the ECU sales :tiphat:

While I could not care less about the numbers to compare, 10% gain over the entire range is a realistic and respectable figure.

Do you have true control over the ignition timing of the VHR motors?

It would be great if you could post a ignition timing log vs RPM, I am currently using Uprev but its ignition timing is limited by something hidden in the ecu that Uprev are yet to figure out. If your ecu can really adjust the ignition timing to a point where it can cause the motor to knock, then I am switching.

Quote:

Originally Posted by FPenvy (Post 3101854)

Again, thanks for your input, we will continue to test our products the same way we've always tested them.

Quote:

Originally Posted by reldas (Post 3101326)

Your reply shows a bit of inexperience...

5th gear is 1:1

Quote:

Originally Posted by bleunetizen (Post 3101959)

The tune adjusts fuel and timing, torque limiter, vmax etc. This is a bench flash so we focus on the horsepower and torque gains.

Quote:

Originally Posted by vividracing (Post 3102006)

The tune adjusts fuel and timing, torque limiter, vmax etc. This is a bench flash so we focus on the horsepower and torque gains.

Yep, thats what ecu tune is all about.. my Q is, do you have total control over the ignition timing? ie, can you advance the timing so much that it goes beyond the sweet spot and start losing power and create knocks? I am asking because I know there is more power to be found in NA tune if Uprev can figure out on how to advance the ignition timing more that what it can currently do.

Amuse announced a few year or so ago that they found a new way of controlling the ignition timing/knock control and found more HP from the tune.. and they call their full exhaust + ecu combo a 400hp (flywheel) package!

Quote:

Originally Posted by bleunetizen (Post 3102129)

Our tunes for NA cars are extremely mild, true, you can advance the timing more but when testing on a customer's car our intention is never to push the limits.
I guess the philosophy there is to squeeze a little more out of the engine without any risks. I may not have all the answers to your questions, I will do my best to find out. Remember, I'm just a salesman here!