Racebox
Performance Tuning Shop located in Houston, Texas. We specialize in the VR30, B58, S58 and more!
05/22/2026
Heat is one of the biggest enemies of the VR30, and when you compare the factory heat exchanger to an upgraded one, it’s easy to see why this is such an important mod. And, with summer right around the corner, swapping the OEM setup for something like this is crucial! Mishimoto’s heat exhanger is easily one of the best performance upgrades you can do.
A common questions we get is: “Do I need a retune after upgrading the heat exchanger?” Short answer: no.
As charge air temps rise, the ECU starts pulling timing to protect the engine. Upgrading the cooling system helps delay heat soak and keeps temps under control for longer, meaning the car can maintain its performance for longer in the heat with fewer corrections. Once you start turning the boost up, you generate even more heat, which makes cooling upgrades even more important for tuned cars in the summer. Even on a bone stock car untuned, this is an excellent upgrade!
If you’re planning to push your VR30, a heat exchanger should be high on the mod list. I mean seriously… look how tiny the factory one is 😆
Want to keep your VR30 alive and well this summer? Be sure to hit us up to get your cooling system ready for the heat! Parts, installations, and tuning all available under our roof
📲: (832)786-9038
📩: [email protected]
05/13/2026
406whp and 453wtq on stock downpipes with only 2 mods 🫡
This 2024 6M/T Nissan Z came in with just a Stillen catback exhaust and Z1 intakes, and left the dyno making an additional +59whp & +95wtq after a custom 93 octane tune 😮💨
Strong numbers on a simple setup, and it only gets better when you’re banging gears in the manual 🔥
Is your Z stock or heavily modified? Either way, we can take your build further. Parts, installs, and tuning are one call or email away 😉
📲 (832) 786-9038
📩 [email protected]
05/06/2026
NEW Stock Engine VR30 Record 🔥 885whp/707wtq
gtr just put down an impressive 885whp and 707wtq on his stock engine VR30, resetting the previous record held by us during a remote tuning session .
, the quickest VR30 in the world, previously held this record at 825whp/674wtq and is still running the same stock engine.
Want to take your Infiniti or Nissan to the next level? Contact us to get started! Parts, installation, & tuning all available under ONE roof ✅
Mod list:
- turbo kit w/ Garrett G25-550
- 3.5” FDP + Dumps
- Port injection kit with 1300cc injectors
- Level10 Built transmission
Tuned by Racebox on 🔒
The Racebox Q&A 🫡
You guys asked some GOOD questions on our story… so we sat down and answered all of them 😏
We cover everything from performance upgrades and tuning to the behind-the-scenes of what we do and how we approach each build.
No music or filler, just real answers from people who actually work on these cars and tune them under the same roof ✅
Full video is live on YouTube! Link in bio 🎥
If you’re ready to take your build to the next level, hit us up!
📩 [email protected]
📲 832-786-9038
04/27/2026
Port injection for the VR30 made simple 🫡 YouTube link in bio
With all the hype around PI, we put together a full breakdown showing you exactly what you need to run port injection the right way plus the benefits vs upgraded DI
We cover everything from unboxing and installing the complete PI kit, to real dyno results on VRX80B turbos 👀
Ready to unlock your VR30’s full potential? Let’s get your setup dialed in the right way—contact us today
📩 [email protected]
📲 832-786-9038
🎥 Full video live now
Link in bio
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Opening Hours
| Monday | 9am - 6pm |
| Tuesday | 9am - 6pm |
| Wednesday | 9am - 5pm |
| Thursday | 9am - 6pm |
| Friday | 9am - 6pm |
| Saturday | 12pm - 3pm |