Infiniti built two of the most tunable modern V6 platforms on the road: the twin-turbo VR30DDTT in the Q50 and Q60 Red Sport, and the naturally aspirated VQ family found in the G35, G37, and earlier Q50 and Q60 models. APA Custom Shop in Queen Creek treats both the same way we treat every car that rolls through the door — honest diagnostics first, clean work second, and power built to last. Whether your Infiniti needs routine service done right, a check engine light chased down, or a full stage path from tune to bolt-ons to forced induction, we quote the exact build for your car and your goals. There is no upsell script here, just a shop full of people who care about doing it correctly.
What We Build on VR30 and VQ Infinitis
The VR30 responds hard to tuning because so much power is left on the table from the factory, and the VQ rewards a well-planned bolt-on and tune combination with sharper response and a better top end. We work on both as daily drivers, weekend cars, and track builds, and we start every project by understanding how you actually use the car before we recommend a single part.
Everything is done in house, so your Infiniti stays with the same crew from diagnosis through the final dyno pull. That means less finger pointing and a build that is tuned as a complete package rather than a pile of unrelated parts.
- ECU tuning and remote tuning, with current options confirmed for your specific platform
- Bolt-on installs including intakes, downpipes or high-flow components, and full exhaust
- Long-tube headers and exhaust work on applicable platforms
- Supercharger and turbo upgrade installs, plus engine builds and swaps when the goal calls for it
- Suspension, brakes, and alignments so the chassis keeps up with the power
- Diagnostics, maintenance, and repair for stock and modified Infinitis alike
The Stage Path: Tune, Bolt-Ons, Then Forced Induction
We think in stages because it protects your money and your engine. Step one is almost always a proper tune, since it unlocks what the platform already has and lets us log real data before adding parts. From there we move to breathing and supporting modifications, and only then to bigger forced induction goals like upgraded turbos on the VR30 or a boost setup on a VQ.
This order matters. Building the stages in sequence means each part is installed against a known baseline, the tune grows with the car, and we catch anything unusual on the dyno before it becomes a roadside problem. When you call, we lay out a stage path that fits your budget now and leaves room for where you want to end up.
Why Tuning Ties the Whole Build Together
Bolt-ons without a matching calibration leave power and drivability on the table, and on a factory-turbo car like the VR30 they can also mask problems the stock tune was never written to handle. A custom tune on our Dynojet dyno lets us watch air-fuel, timing, and boost under real load, then dial the car in for how it lives in Arizona heat rather than a generic file made for someone else's car.
Tuning is also where honest diagnostics pay off. If something is not right, we see it in the data before you feel it on the street, and we tell you straight. Ask us about current tuning options for your platform when you call, since the right approach depends on your exact year and model.
Service and Diagnostics Done Right for a Modified Car
A modified Infiniti still needs maintenance, and a lot of shops get nervous the moment they see aftermarket parts. We do not. We service, diagnose, and repair these cars every day, so your fluids, wear items, and gremlins get handled by people who understand how the modifications interact with the rest of the platform. If you bought the car already modified or tuned elsewhere, bring it in and we will assess where it actually stands.
You will likely meet a few of the crew along the way. Sean is one of the gearheads behind the builds and tuning who would rather explain the plan than talk over your head. Tiffany usually keeps the front of the house running and the communication straight so you always know where your car sits. Jared is one of the hands turning wrenches and fabricating when a build needs something custom. We are owner-run and we stand behind the work. Call (602) 762-4916 to talk through your Infiniti and get a quote on the exact build.