By Mike Bonnani
When evaluating the exhaust system on the Nissan 370Z we were amazed how restrictive it was. The tubing diameter is tiny for an engine with the output of the VHR37. To help address this issue we decided to start uncorking the exhaust system by evaluating a set of high flow Catalytic Converters and Downpipes from Berk Technology.
From our sister site 370Z.com
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By Mike Kojima
We used a new six speed sports model Nissan 370Z with a few hundred miles on the odometer as our test subject. Before the installation of the JWT Dual POP, we baselined the car on Technosquare’s AutoDyn 30 Superflow chassis dyno. The Superflow dyno is unique in that it uses both an inertial weighted roller and an eddy current load cell to provide the working load against the engine.
Technosquare changes the factory fuel, timing, rev limit and VVEL/VTC cam control maps to get a respectable gain of 11 whp and 10 lb/ft of torque. The gains are pretty much across the board, starting at 2700 rpm and continuing until the rev limiter stops the fun. The gains are large and consistent through the entire rev range, greatly increasing the area under the power curve.
Since we have actually started to work on and modify the Nissan 370Z we have come to realize that high oil temperatures have the potential to become a problem on these cars. We have recorded oil temperatures of 260 degrees plus on 370Z’s on the dyno, in brisk driving and simply in heavy traffic. Several times we had to stop dyno testing or slow down while driving to allow oil temperatures to drop.
By Sarah Forst
We strove for accuracy and repeatability in our testing. We did all of our testing during one day. We used standard SAE correction. We thoroughly warmed up the VQ37VHR 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.
Froum our sister site 370Z.com
By Mike Kojima and Aaron LaBeau
A Vacation at last I think… as I sign up for a trip to Tokyo in the middle of January. I have flown to Japan with the folks at Turbo magazine and Nitto tires many times over the years and this disastrous year, I need a break from the hectic pace of being a number one stunna.
It seems like the B15 Sentra SE-R Spec-V just doesn’t get any respect. Unlike previous models of SE-R poAwered by the SR20DE engine whose owners seem to love them and drive them until their shells decay into loose piles of metallic oxides, the owners of the new generation of SE-R seem to be eager to get rid of them, trading them in for the WRX, EVO, Si or SRT as soon as their incomes grow enough to afford the payments of these more expensive cars.
I have more cars than I can store easily on my property or the motoIQ headquarters. It’s also a well known fact that most of them don’t run at any particular time because, I only have so much bandwidth and more importantly money to work on numerous projects. The fact that our house is in a pretty decent part of the OC and looks like a rednecks doublewide pisses off my wife to no end. My neighbors probably don’t like me very much either.
So when Scion was launched as the brand of Generation Y, after looking at the cars specs, I sighed a yawn seeing that they were probably designed for cool kids and those who emulate them that were more into clothes, hair product and music than cars or at least the performance part of it. I immediately dismissed the brand as something I was not interested in and never paid attention to it again.
MotoIQ Staff Report
If you are into cars, it’s inevitable that your nice shiny new ride will accumulate its share of ugly and annoying dents and dings no matter how careful you are when parking. Even the stored garage queen is not immune to this sort of damage. Some of you have kids, some have crowded garages full of stuff that falls over. Some of you have spouses or SO’s that think your obsession with cars is dumb and park the car any old where when you are not around.
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