The Technosquare ECU turned out to be a highly effective mod. The Technosqaure Nissan 370Z ECU reflash makes more power on the 6-speed car over the automatic transmission version The power continues to climb to 8000 rpm and adds a huge useable area to the power curve. The most impressive part of the ECU flash is the extension of the factory rev limit from 7700 to 8000 rpm. Once again we asked Technosquare not to custom tune the ECU to the particular combination that the Killer Bee was running but to use their off the shelf ECU reflash to represent results similar to what a mail order customer might get. Technosquare changed the fuel, timing, cam control and rev limit maps to get there gains.
Technosquare's Tadashi Nagata reflashes the Killer Bee Nisan 370Z's ECU What happens is that with a piggyback device, the factory ECU often will undo the changes the piggyback makes. A reflash is advantageous over things like piggyback computers because a piggyback fights the closed loop learning control of the stock computer. You can simply send your factory ECU to Technosqaure and they can reprogram it with their performance enhancing program. Technosquare can program a 370Z ECU in the same manor that Nissan would do from the factory. The Technosquare 370Z ECU reflash is a reprogramming of the engine control parameters of the factory ECU. The first part that we tested was the Technosquare ECU reflash. The VQ37VHR engine exhibited the typical wide flat torque curve and nice linear power curve that the VQ37VHR is becoming renowned for. We will be evaluating more parts on the Killer Bee in the near future so stay tuned! In stock trim the Killer Bee slung out 262 whp at 7000 rpm and 210 lb/ft of torque at 4600 rpm.
370z ecu flashing manual#
The Killer Bee is a sports package 6-speed manual transmission 370 that was returned to stock for our evaluation.
We monitored the air fuel ratio on every run to make sure that the tested part was affecting performance, not what the part did to the tune.įor our test mule, we used the Killer Bee, the yellow 370Z that was our May feature car. We started every dyno pull at the same water temperature and allowed the car to normalize after every pull by letting it run on the rollers with no load after each pull with the dyno’s large fan running until the water temp stabilized. We thoroughly warmed up the engine and the drivetrain by driving the car on the dyno at speed for about 10 minutes to warm the engine, transmission and differential oil (this car is equipped with Technosquare’s oil cooler kit) as well. We did all of our testing during one day. We strove for accuracy and repeatability in our testing. One major difference between the AutoDyn 30 and the Dynojet is that it gives lower, more conservative power results than the Dynojet, so don’t be surprised if you see bigger number for 370Zs parts from other people, magazines and companies, the important thing to see here is the difference in power from run to run on the same dyno, not from dyno to dyno. The eddy current power absorber makes also the AutoDyn 30 better for tuning. The AutoDyn 30’s principal advantage over the Dynojet is that it can load the engine more than a Dynojet to give more accurate results and to give the engine and drivetrain loads more closely mimicking what they actually see when they are being driven. This is a very different method of measuring power from the common Dynojet dyno which is purely an inertial dyno. As we have explained in previous tests, the AutoDyn 30 is a dyno that uses both inertial and static loading with weighted wheel rollers and an eddy current power absorber. For this round of testing we used the Superflow AutoDyn 30 chassis dyno at Technosquare Inc. We have completed our comprehensive dyno test of two of Stillens hottest performance parts for the 370Z, their all stainless exhaust system and high flow cat combo combined with Technosquare’s tuned ECU. Nissan 370Z 6-Speed Manual Transmission Performance parts Dyno Test, We Test Stillen’s Exhaust System and High Flow Cats With Technosquare’s ECU Reflash