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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» How to Remove the Nissan 370Z ECU

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Originally Posted by FPenvy (Post 3101822) 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.

Originally Posted by vividracing (Post 3101850) Thank you for your input.

Originally Posted by FPenvy (Post 3101854) 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:

Originally Posted by reldas (Post 3101326) 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.

Originally Posted by bleunetizen (Post 3101959) 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.

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.

Originally Posted by bleunetizen (Post 3102129) 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!

Originally Posted by vividracing (Post 3102136) 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!

Originally Posted by Juice14 (Post 3103802) Even if the dyno was done in 3rd gear and it showed gains then that's a positive thing. However the amount of HP that it gained is irrelevant, IMO we should look at it in percentage %. Vivid should try and reset the ECU and do this tune in 5th gear at least to show us in the forum, Even if the final number is lower, people are more interested in the % gains. At least I am.

Originally Posted by ANMVQ (Post 3106436) Here's a question why to you remove the ECU to Flash it? Why not with the tuner in the car on the rollers.

Originally Posted by ANMVQ (Post 3106436) Here's a question why to you remove the ECU to Flash it? Why not with the tuner in the car on the rollers.

Originally Posted by vividracing (Post 3107575) This ECU cannot be flashed through the OBDII Port. Such is the case with various vehicles.

Originally Posted by Chuck33079 (Post 3108105) I'm confused by this statement. Uprev has been able to flash the ecu through the obd port for years. Did I read this wrong?

Originally Posted by redline10000 (Post 3108093) Does the flash offer any features like map switching, launch control or other stuff offered by other 370z ecu programs?

Originally Posted by vividracing (Post 3108805) Our tune does not offer any of those features.

Originally Posted by Chuck33079 (Post 3108856) So, given that the software has fewer features than Uprev and requires the ecu to be removed, is it at least cheaper than Uprev? Otherwise, what's the point?

Originally Posted by vividracing (Post 3108905) The point is to develop parts for the 370Z. At no point in this thread am I trying to compete with Uprev's product or other companies who focus solely on Nissan/Infiniti brand. We offer tunes for many different vehicles and this was our first run at the 370Z platform. I posted this thread to inform the members of what we have going on at our shop and how it pertains to the vehicle they love. Our tune produced gains over the factory tune IMO that's a win. We offer a complete catback exhaust for this car that sounds and performs great. We will have the test car back again and develop our own cold air intake for the car. In the meantime I am here to lend support for members who want to buy parts. If they want VR Tune, Agency Power or any of the other brands I sell, my purpose is to promote those brands. I will offer up honesty, a fair price and great customer service to those who choose to do business with me.

Originally Posted by jooonnn (Post 3119308) Could i get pricing on this? So this also remaps throttle as well? Sent from my iPhone using Tapatalk