Xylander
Well-Known Member
- First Name
- Guy
- Joined
- Sep 12, 2025
- Threads
- 1
- Messages
- 117
- Reaction score
- 173
- Location
- Tallahassee, FL
- Car(s)
- 2024 Nissan NISMO Z
- Thread starter
- #1
Hi all, new owner of a 2024 Nismo Z here. I'm new to the Z world, but not new to performance cars. I bought this car well under MSRP after pestering the dealership for well over a year, and they finally accepted my offer. It's been 500 miles, great driving car... and the warranty is about to be null and void 
Right now, the car is in the shop in pieces. Normally when I start building cars, I sort the mechanical portion first, then do the rest of the car piecemeal. I'm going in reverse this time and sorting the interior first, and the mechanical mods will come next. That's because I'm doing an entire rework of the Z's sound system.
I'm working with Yamaha Music in Japan to design and install a bleeding edge ultra high fidelity sound system utilizing a digital/fiber 14-speaker Focal arrangement. The trunk is getting a pair of Focal 10" subs in custom fabricated fiberglass enclosures mounted in the rear corners of the trunk space. All the factory Bose junk will be promptly tossed in the trash and replaced with Focal units in the factory mounting spots, with an additional pair of Focals mounted behind the seats and micro tweeters under the headliner. This will be tied into a computer tuned digital controller that allows for fine tuning of the speakers' frequency settings. When done, only the subs in the back will be visible. Everything else will look OEM or will be hidden completely from view.
Once all that is installed, we'll be installing sensors to test for vibration and harmonic resonance over a 6-8 hour testing session while the engineers in Japan tune the sound system remotely via live connection to the laptop plugged into the test environment. Part of this process will be to identify mounting locations for sound deadening material and occlusion/deflectors to elevate the sound quality. It'll also be generally sound deadened to eliminate road noise. The end result should be a Z that's remarkably quiet that will experience zero rattles or unwanted interference or noise at any volume level/range. I won't go into the overall cost, because it's obscene. If you're a Donut media fan, I'll just say that this stereo conversion is going to be just about the same cost as they spent on their entire "Hi Z" build.
This work will be completed in about 60 man hours by the end of next week. My winter club race season is starting, so I won't be doing much to the Z until early spring 2026, but I've already ordered the parts for the power upgrade. I'll post more details on this as I start work on that, but in general, bigger turbos, downpipes, catback exhaust, trans rebuild/mod, driveshaft, rear axles, wheels/tires, and a total fuel system replacement will bring this Z up to a planned 700-800whp range on 93 octane (parts list subject to change depending on how things test out). I don't do E85. Quality E85 is almost nonexistent within 100 miles of me in NW FL, that and I actually do know how to build an engine, and it's just easier to build the thing right for 93 than have to order pails of E85 every month.
I'm not going to do a lick of work at all to the exterior of the car. Just a simple, unassuming 2024 Nismo Z with 800hp. I could build it bigger, but...
This car is my daily grocery getter.
I'll post pics and build details as things progress. I'm not a YTer or anything, just an old guy over here building a stupid high end car for myself on a relatively affordable platform. The primary goal of this build is to create the ultimate GT car for a daily use Z, no expense spared. It won't be a 1,000hp car or anything, but it'll be just an obscene, unassuming car built to a bulletproof spec with no corners cut on safety or control. The goal is therefore to bring smiles to faces, no matter what it's doing. Balls fast, check. Handles great, check. Sounds great, check. Then, you turn the stereo on and, I'll consider the build a success if it blows someone's mind out their forehead.
I've built many race cars, performance cars, and so-on... but I've not built a fully tilted street car that's built primarily for maximum enjoyment instead of maximum performance. So, here goes...
Right now, the car is in the shop in pieces. Normally when I start building cars, I sort the mechanical portion first, then do the rest of the car piecemeal. I'm going in reverse this time and sorting the interior first, and the mechanical mods will come next. That's because I'm doing an entire rework of the Z's sound system.
I'm working with Yamaha Music in Japan to design and install a bleeding edge ultra high fidelity sound system utilizing a digital/fiber 14-speaker Focal arrangement. The trunk is getting a pair of Focal 10" subs in custom fabricated fiberglass enclosures mounted in the rear corners of the trunk space. All the factory Bose junk will be promptly tossed in the trash and replaced with Focal units in the factory mounting spots, with an additional pair of Focals mounted behind the seats and micro tweeters under the headliner. This will be tied into a computer tuned digital controller that allows for fine tuning of the speakers' frequency settings. When done, only the subs in the back will be visible. Everything else will look OEM or will be hidden completely from view.
Once all that is installed, we'll be installing sensors to test for vibration and harmonic resonance over a 6-8 hour testing session while the engineers in Japan tune the sound system remotely via live connection to the laptop plugged into the test environment. Part of this process will be to identify mounting locations for sound deadening material and occlusion/deflectors to elevate the sound quality. It'll also be generally sound deadened to eliminate road noise. The end result should be a Z that's remarkably quiet that will experience zero rattles or unwanted interference or noise at any volume level/range. I won't go into the overall cost, because it's obscene. If you're a Donut media fan, I'll just say that this stereo conversion is going to be just about the same cost as they spent on their entire "Hi Z" build.
This work will be completed in about 60 man hours by the end of next week. My winter club race season is starting, so I won't be doing much to the Z until early spring 2026, but I've already ordered the parts for the power upgrade. I'll post more details on this as I start work on that, but in general, bigger turbos, downpipes, catback exhaust, trans rebuild/mod, driveshaft, rear axles, wheels/tires, and a total fuel system replacement will bring this Z up to a planned 700-800whp range on 93 octane (parts list subject to change depending on how things test out). I don't do E85. Quality E85 is almost nonexistent within 100 miles of me in NW FL, that and I actually do know how to build an engine, and it's just easier to build the thing right for 93 than have to order pails of E85 every month.
I'm not going to do a lick of work at all to the exterior of the car. Just a simple, unassuming 2024 Nismo Z with 800hp. I could build it bigger, but...
This car is my daily grocery getter.
I'll post pics and build details as things progress. I'm not a YTer or anything, just an old guy over here building a stupid high end car for myself on a relatively affordable platform. The primary goal of this build is to create the ultimate GT car for a daily use Z, no expense spared. It won't be a 1,000hp car or anything, but it'll be just an obscene, unassuming car built to a bulletproof spec with no corners cut on safety or control. The goal is therefore to bring smiles to faces, no matter what it's doing. Balls fast, check. Handles great, check. Sounds great, check. Then, you turn the stereo on and, I'll consider the build a success if it blows someone's mind out their forehead.
I've built many race cars, performance cars, and so-on... but I've not built a fully tilted street car that's built primarily for maximum enjoyment instead of maximum performance. So, here goes...
