The Z1 370Z has arrived.
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Something I've noticed from the dynos is that the power levels off around 6K. More should be had by using a larger diameter exhaust to improve the higher rpm scavenging and shorter "ram" style intakes. Tuning for 93 octane will also help, whenever someone gets a flash for this.
My 370z is fully broken in now and I do notice power not surging as strong in the uppers. It makes good power, but each subsequent rpm isn't gaining like the previous.
My 370z is fully broken in now and I do notice power not surging as strong in the uppers. It makes good power, but each subsequent rpm isn't gaining like the previous.
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Something I've noticed from the dynos is that the power levels off around 6K. More should be had by using a larger diameter exhaust to improve the higher rpm scavenging and shorter "ram" style intakes. Tuning for 93 octane will also help, whenever someone gets a flash for this.
My 370z is fully broken in now and I do notice power not surging as strong in the uppers. It makes good power, but each subsequent rpm isn't gaining like the previous.
My 370z is fully broken in now and I do notice power not surging as strong in the uppers. It makes good power, but each subsequent rpm isn't gaining like the previous.
The only drawback to doing it with larger exhaust will be the loss of power at lower RPM's and the potential for even more torque loss. I would rather deal with a flat pull at the upper range than give up power throughout the band. We're still waiting to pull it on the dyno with the 07 Nismo intakes installed. There is certainly more power to be had with tuning on this car, we're working with Uprev now on getting a solution to that.
Last edited by in.the.dark; Jan 22, 2009 at 09:44 AM.
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Well before jumping into the headfirst into the often misinterpreted, misguided and misquoted realm of exhaust tuning, I'd say that it is a balance game and that I wouldn't rule out there being a good chance for solid gains pretty much throughout in a diameter and design that will sufficiently allow scaveging in the upper rpms while not decreasing the velocity of exhaust at lower engine speeds.
Considering my personal background in motorsports and years of work as a Dynatech racing headers dealer I have a pretty good idea of what I'm talking about in regards to exhaust diameter and the trade offs between high RPM gains and low RPM scavenging.
That wasn't directed at you, but rather at the collective wisdom of the internet forum types that think "backpressure = torque" and don't understand the trade-offs associated with exhaust tuning. I'm sorry if it sounded like it was pointed at you, I was trying to avoid people that just spout dogmatic mantras on boards. I'd love to get your thoughts on the stock header design.
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That wasn't directed at you, but rather at the collective wisdom of the internet forum types that think "backpressure = torque" and don't understand the trade-offs associated with exhaust tuning. I'm sorry if it sounded like it was pointed at you, I was trying to avoid people that just spout dogmatic mantras on boards. I'd love to get your thoughts on the stock header design.
Anyways, lol.
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From: Carrollton, GA
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Interesting result. Peak torque increased by 5 ft/lbs but peak horsepower was down. The overall curve had a slight bump upwards but really strange to see the peak number decrease. Then again we were using a 350Z HR Nismo intake and not a true 370Z design. Wondering if the 370Z intake will have an increase in piping diameter over the HR.......not really what we were expecting to see. But interesting none the less.
Seen this car in person today it is sick. Thanks for the run around bryan I really appreciate it. Guys you have to see this thing in person it looks way better. Pictures really dont do justice lol.
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From: Carrollton, GA
Did John give you a ride? I stayed hidden in my office all day, lol, it's too damn cold in parts room.


