Racebox

Racebox Performance Tuning Shop located in Houston, Texas. We specialize in the VR30, B58, S58 and more!
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Welcoming our newest addition to the fleet the only way Hussain knows how 😈You’re probably wondering why Hussain is THIS...
07/10/2026

Welcoming our newest addition to the fleet the only way Hussain knows how 😈

You’re probably wondering why Hussain is THIS excited about an SUV… but once you know there’s a VR35 under the hood, his excitement makes perfect sense.

After purchasing it with only 7 miles on the clock, we got straight to work… We already have the ability to unlock & tune the new VR35, and ultimately we purchased this vehicle to get a jumpstart on the new era of Nissan and Infiniti in anticipation of the upcoming redesigned Q50. We’ve got a full YouTube video dropping on this one, so make sure to subscribe to our channel!

780whp + a 6-speed manual = the ultimate driving experience 😮‍💨It’s hard to believe this G80 M3 was bone stock just a fe...
07/10/2026

780whp + a 6-speed manual = the ultimate driving experience 😮‍💨

It’s hard to believe this G80 M3 was bone stock just a few months ago. If this car looks familiar, it’s because the customer keeps coming back every time for more power. 🤣

During his first visit, we installed his RK Autowerks single turbo kit and tuned it on 93. Stock clutch was limiting us but this time, he’s back with all the parts needed to let this thing rip on the dyno 🔥

We upgraded the transmission with a PTB twin-disk clutch, added 950cc port injectors on the stock intake manifold, LPFP, and a Motiv Reflex+ to bring it all together. After recalibrating the setup on full E85, this car is leaving with 3 maps that gives Danial the ability to turn boost up and down while retaining full Flexfuel capabilities in each!

Sure, we could’ve chased a bigger dyno number for social media. Instead, we put together a set-up that is a blast to drive while keeping torque realistic for normal street tires on a RWD car.

E85 Results:
- Map 1: 684whp / 575wtq
- Map 2: 750whp / 621wtq
-Map 3: 780whp / 641wtq

Mod List:
- Single Turbo Kit
- G35-1050
- Reflex+ (boost control, flex fuel & port injection)
- stage 2.5 LPFP
- PI Kit w/ 950cc Injectors
- Upgraded Clutch

Tuned by ♾️ via .tuning

Ready to take your X58 to the next level? We offer parts, installation, and custom tuning all under one roof at Racebox. Contact us today to get started!

📲 (832) 786-9038
📩 [email protected]

With July 4th coming up, we will be CLOSED this Friday! 🇺🇸🦅🧨Wishing you all a wonderful Independence Day, & please be sa...
07/03/2026

With July 4th coming up, we will be CLOSED this Friday! 🇺🇸🦅🧨

Wishing you all a wonderful Independence Day, & please be safe!

We will return to regular business hours the following Monday! Thank you to everyone who supports us ♾️💚

06/30/2026

no media guys were harmed in the making of this reel 😀

Custom tuned by ♾️ + dialing in launch control! 😈

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With July 4th right around the corner, we are celebrating the only way we know how: by removing restrictions 🇺🇸🦅This bon...
06/29/2026

With July 4th right around the corner, we are celebrating the only way we know how: by removing restrictions 🇺🇸🦅

This bone stock G80 M3 stopped by the shop to get the basics knocked out! We installed a set of front mount intakes to help it inhale, and catless downpipes for the exhale, giving the stock turbos the airflow they need to breathe freely. After that, we unlocked the DME and flashed the MHD stage 2 93 OTS tune. Simple flash and done! 🫡

Ready to unlock what your S58/B58’s potential? Contact us to get started. We offer DME unlocks, parts, installation, and tuning all under one roof 🔥

📩 [email protected]
📲 832‑786‑9038

806whp/752wtq BMW M340i 😈This big turbo B58 was already tuned by us on the stock transmission where we limited the power...
06/23/2026

806whp/752wtq BMW M340i 😈

This big turbo B58 was already tuned by us on the stock transmission where we limited the power to 768whp & 622wtq until now… 😯

This time, he’s back with a built transmission and a split‑feed fuel system. With both of these upgrades installed, we were able to put down even more power this dyno tuning session. 💪

Results on full E85 below:

Map 1: 577whp / 535wtq
Map 2: 673whp / 633wtq
Map 3: 740whp / 701wtq
Map 4: 806whp / 752wtq

Custom tuned by Racebox ♾️ via .tuning

Full mod list:

- turbo kit
- PTE 7275
- Stage 2 transmission
- upgraded LPFP + split feed
- ID1050 PI injectors
- 🇨🇳 Intake manifold
- catch can

Ready to unlock what your B58 is actually capable of? Contact us to get started! We offer parts, installation, & tuning all under one roof 🔥

📩 [email protected]
📲 (832) 786‑9038

06/20/2026

XDrive has left the chat 🤣 Who said stance cars can’t be fast?

Don’t let the show‑car look fool you 🫣 Under the hood is a built engine and a single‑turbo kit from that we installed 🔥 Way more detail on this build coming soon!

If you’re looking to wake up your S58, look no further! We don’t just tune badass BMW — we offer parts and installation too. Contact us today to start your build 🫡

📲 (832)786‑9038
📩 [email protected]

Most of y’all already know Mo’s Q50, and now it’s running even stronger with a stage 2 built engine. 😯While the VPF G30...
06/16/2026

Most of y’all already know Mo’s Q50, and now it’s running even stronger with a stage 2 built engine. 😯

While the VPF G30-1050 mid‑mount turbo setup made great power on the stock motor, we turned it up to take advantage of the new built engine. The setup can make more, but the goal was to create a fun & reliable RWD car, and 808 to the wheels is more than what he’ll ever need on the street. 🤣

Dyno Results:

Map 1 (9psi)- 579whp / 436wtq
Map 2 (12psi)- 684whp / 497wtq
Map 3 (15psi) - 733whp / 560wtq
Map 4 (19psi) - 808whp / 589wtq 🔥

Mod list:

- stage 2 engine
- Mona Lisa mid-mount turbo kit w/ G30-1050
- AMS dual 525 LPFP w/ custom return system
- ID1300X injectors
- Z1 fuel rails + flex fuel kit
- JK41 6MT swap + Zspeed triple disk clutch
- Custom 3.5’ tomei titanium single exit

Looking to take your Q50 or Q60 to the next level? Whether you’re interested in a tune, bolt-ons, or even a full turbo upgrade, we can help with everything from parts and installation to custom tuning. Contact us today to get started!

📲 (832) 786-9038
📩 [email protected]

06/12/2026

765whp out of a VR30 never sounded so good 😮‍💨

stopped by the shop to install a titanium single exit and the sound did not disappoint 🔥

Already equipped with VRX80B turbos, this Q50 was making 765whp before it rolled into the shop. The titanium exhaust was just the cherry on top 😩

We don’t just tune over 4,000 VR30s, we build them too.

Need parts, installation, or custom tuning for your VR30?

📞 (832) 786-9038
📧 [email protected]

Address

Houston, TX

Opening Hours

Monday 9am - 6pm
Tuesday 9am - 6pm
Wednesday 9am - 5pm
Thursday 9am - 6pm
Friday 9am - 6pm
Saturday 12pm - 3pm

Telephone

+18327869038

Website

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