The Nissan Q50 with the VR30DDTT engine is a favorite among budget-minded performance enthusiasts. This 3.0-liter twin-turbo V6 has plenty of headroom for safe, reliable power gains, and you don’t need to spend thousands to feel a real difference. Two of the most popular bang-for-buck upgrades are the Injen cold air intake (CAI) and a resonator delete. For roughly $900 combined, these mods can add up to 20 wheel horsepower and drastically improve the driving experience. In this guide, we’ll break down exactly what each mod does, how to install them, dyno-verified results, and what to expect when running both together.

Why the VR30DDTT Responds So Well to Bolt-Ons

The VR30DDTT was designed with forced induction from the factory, meaning the engine already has robust internals and a capable fuel system. However, the stock intake and exhaust systems are restrictive to keep noise down and meet emissions standards. By improving airflow into and out of the engine, you allow the turbos to spool faster and maintain boost more efficiently. This is why even simple mods like a cold air intake and a resonator delete deliver noticeable gains without needing a tune – though a tune later can unlock even more power.

For reference, the stock Q50 3.0t (non-Red Sport) makes approximately 300 horsepower at the crank. Red Sport models are factory-rated at 400 hp. With these two mods, a non-Red Sport can easily sit around 340-350 crank horsepower, closing the gap significantly for a fraction of the cost of a Red Sport upgrade.

Injen Cold Air Intake: $600 for Up to 15-20 WHP

The Injen cold air intake (part number SP1535BLK for the dual intake setup) is one of the most proven intakes for the VR30 platform. It replaces the stock air boxes with high-flow, oiled cotton filters and smooth mandrel-bent aluminum tubes. The intake draws air from a sealed area behind the headlight, away from engine heat, which lowers intake air temperatures (IAT). Cooler, denser air means more oxygen for combustion – and more power.

Dyno-Proven Gains

Injen claims an increase of 15-20 horsepower at the wheels on a stock Q50, and independent dyno runs from community members like Q50Forum show similar figures. On a Mustang dyno, a bone-stock 2016 Q50 3.0t picked up 17 whp and 14 lb-ft of torque after installing the Injen intake. That’s a significant gain for a simple bolt-on.

What It Does to Sound

Alongside power, the Injen intake transforms the VR30’s acoustics. You get much louder turbo spool, blow-off valve sounds, and a deeper intake roar when you step on the gas. For many owners, the sound alone is worth the investment.

Installation Notes

Expect to spend about 1-2 hours in the driveway with a socket set and screwdrivers. The kit is designed to fit the Q50 (2016+) and Q60 (2017+). You’ll remove the stock air boxes, install the new heat shields, route the intake tubes, and secure the MAF sensors. No permanent modifications are needed, so you can revert to stock if desired.

Resonator Delete: $300 for Exhaust Flow and Sound

The factory exhaust system on the Q50 includes a large resonator in the mid-pipe designed to cancel drone and lower overall volume. While effective, it also creates a restriction and adds weight. A resonator delete removes that section and replaces it with a straight piece of pipe (or a smaller, high-flow resonator). This frees up exhaust flow, reduces backpressure, and lets the engine breathe more freely.

Gains from a Resonator Delete Alone

On its own, a resonator delete typically nets 5-8 horsepower at the wheels, though the real benefit is felt in throttle response and torque delivery. Combined with the intake, the gains compound because the engine can both pull in more air and push out more exhaust gases.

Sound Profile After the Delete

The exhaust note becomes deeper and more aggressive, especially under hard acceleration. There is a slight increase in cabin drone at highway cruising speeds, but most owners find it tolerable – and the trade-off for the performance-oriented tone is worth it. If you want a more subtle sound, you can replace the resonator with a smaller, aftermarket unit instead of a full straight pipe.

Where to Get It Done

Many exhaust shops will perform a resonator delete for $200-$350, depending on labor rates and whether you supply your own pipe. Alternatively, you can buy a pre-fabricated mid-pipe replacement from brands like Fast Intentions or AMR Performance that has a resonator delete built in – these run about $400-$500 but offer a more polished fit.

Combined Gains: Why $900 Gets You 20 HP

When you install both the Injen cold air intake and perform a resonator delete, the cumulative effect is a solid 20 horsepower at the wheels – and sometimes more on a generous dyno. But the experience goes beyond the number: the car feels noticeably quicker from a stop, turbo lag is reduced, and the exhaust note pairs beautifully with the intake sound.

Here’s a typical dyno breakdown from a Q50 3.0t (non-Red Sport) running 93 octane:

  • Stock baseline: 290 whp, 310 lb-ft
  • With Injen CAI only: 307 whp, 324 lb-ft
  • With CAI + resonator delete: 310 whp, 328 lb-ft

While the resonator delete alone adds only about 3-5 whp on this car, it flattens the torque curve and allows the engine to rev more freely. The intake provides the bulk of the peak gain, but both contribute to a more responsive powertrain.

Installation Tips for Do-It-Yourselfers

Both mods are beginner-friendly with basic mechanic skills. Here’s what you’ll need for the job:

  • Socket set (10mm, 12mm, 14mm)
  • Flathead and Phillips screwdriver
  • Jack and jack stands (for the resonator delete, you’ll need to get under the car)
  • Cutting tool (if doing a custom delete) or bolt-on mid-pipe
  • Torque wrench for final tightening

Step-by-Step: Injen CAI

  1. Disconnect the negative battery terminal to reset the ECU (optional, but recommended).
  2. Remove the engine cover by pulling upward.
  3. Unclip the MAF sensor connectors from the stock intake tubes.
  4. Loosen the clamps on the stock air boxes and pull them out.
  5. Install the Injen heat shields and intake tubes per the included instructions.
  6. Reattach the MAF sensors and ensure all clamps are tight.
  7. Reinstall the engine cover (you may need to trim it slightly for clearance).
  8. Reconnect the battery and start the engine – check for any check engine lights.

Step-by-Step: Resonator Delete

  1. Raise the rear of the car securely on jack stands.
  2. Locate the resonator – it sits in the mid-pipe behind the catalytic converters.
  3. Use a cutting tool to carefully remove the section containing the resonator.
  4. Measure and cut a straight pipe of the same diameter to replace the removed section.
  5. Weld or clamp the new pipe in place. If you’re not comfortable welding, most shops will do this quickly.
  6. Lower the car and start the engine – check for exhaust leaks.

Pro tip: If you buy a pre-made replacement mid-pipe, the installation is as simple as removing the stock pipe and bolting on the new one – no cutting necessary.

Tuning: The Next Step to Unlock More Power

With the intake and resonator delete in place, the VR30DDTT is ready for a custom tune. The factory ECU runs conservative air/fuel ratios and timing, leaving a lot of performance on the table. A tune from reputable brands like ECUtek or JB4 can increase boost pressure and optimize the fuel map, yielding another 30-50 horsepower over the bolt-on baseline. That would bring a non-Red Sport Q50 to around 340 whp – a massive jump from stock. However, even without a tune, the intake and resonator delete are excellent standalone upgrades.

Potential Drawbacks and Considerations

No mod is perfect. Here are a few points to keep in mind:

  • Emissions: A resonator delete will not cause you to fail an emissions test in most states because it doesn’t remove catalytic converters. However, some areas have noise ordinances, and a deleted resonator may attract attention.
  • Drone: Expect some cabin drone at 2000-2500 rpm during light throttle. It’s not overwhelming, but if you prioritize silence, you may want a resonated test pipe instead.
  • Heat Soak: While the Injen intake reduces IAT compared to stock, it is still a metal tube that can heat-soak in stop-and-go traffic. Consider wrapping the tubes with heat-reflective tape or upgrading to a heat shield for maximum consistency.
  • Warranty: Both modifications can void your factory warranty if a dealer attributes a failure to the parts. Many owners keep the stock parts and reinstall them before dealer visits.

Frequently Asked Questions

Will these mods work on a 2016-2018 Q50?

Yes – the Injen intake fits all 2016+ Q50 and Q60 models with the VR30DDTT. The resonator delete applies to all Q50s regardless of year.

Do I need a tune to get 20 hp?

No. The 20 horsepower gain is achievable without a tune, just from the improved airflow. However, a tune will unlock additional power and smooth out the power delivery.

Can I do the resonator delete myself?

Yes, if you have basic welding skills or buy a bolt-on mid-pipe. Otherwise, a shop can do it for around $150-$200 labor.

Will the intake void my warranty?

Not automatically, but if a warranty claim involves engine failure, Nissan could deny coverage if they prove the intake caused or contributed to the issue. Most dealers are reasonable with bolt-ons.

Conclusion

For under $1,000, the Injen cold air intake and resonator delete transform the Nissan Q50 VR30DDTT from a mild-mannered daily driver into a snarlier, punchier performer. The 20 horsepower increase is real and repeatable, and the improved sound makes every drive more engaging. Whether you’re building a track toy or just want a faster commute, these two mods offer the best performance-per-dollar ratio for the platform. Start with the intake, then add the resonator delete – your VR30 will thank you.