Q: I brought a 2006 Infiniti g35 coupe. When I start it up it sounds like a race car, when I press the gas it gets louder until I let

asked by on April 28, 2017

When I start up the car it sounds like a motor bike, when I step on the gas it gets louder. I brought the car and the guy said he removed a box to get the sound and more speed. What is this box he's talking about?

My car has 1100000 miles.
My car has an automatic transmission.

The previous owner might have modified the air intake (a box like component holds the intake filter) but the noise you are referring to is probably caused by a defective exhaust and/or aftermarket exhaust parts which result in excessive noise. Of great initial concern is the possibility that the noise is accompanied by an exhaust leak. Unfortunately, when systems are modified that increases the risk of faulty connections. Noise will damage your hearing but leaking carbon monoxide can kill you so do get the source of the noise identified. A mobile mechanic can inspect the vehicle, pinpoint the cause of the noise and give you repair options. If the exhaust was modified and you desire that it be returned to stock, with the accompanying quietude, the mechanic can estimate for you the least cost strategy to accomplish that. The service to request is exhaust noise diagnostic. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

After driving the car for 10-15 miles , if I stop the engine and try to start it will CRANK but wont start

Next time this happens, push the gas pedal all the way to the floor. This puts the car into what is called clear flood mode. This means the Powertrain Control Module (PCM) will not supply injector pulse to the injectors,...

What Causes Cracks and Leaks on the Exhaust Manifold?

The exhaust manifold is designed to route exhaust gases away from the engine and into the rest of the exhaust system. A cracked exhaust manifold not only results in noise, but can also cause engine performance problems. This is because...

Passenger's side headlight not working

If you have already replaced the bulb, the problem may be with the wiring, or with the headlamp control module that your particular vehicle has. You will need to find a VW qualified technician to inspect and get headlamp working...

Related articles

Where Is the O2 Sensor Located?
Oxygen Oxygen sensors O2 sensors will always be located in the exhaust system. Their function is to sense how much oxygen remains in the exhaust that is flowing out of the engine, and report that information to the vehicle’s engine...
What Are the Dangers of a Vehicle With a Bad Exhaust System?
Your Your car’s exhaust plays a vital role in several different things. It affects engine performance. It reduces noise while driving. It also protects you from potentially lethal carbon monoxide fumes. If your car’s exhaust has seen better days, there...
Symptoms of a Bad or Failing Exhaust Clamp
If your exhaust is noisy, loose, or failing an emissions test, you may need to replace an exhaust clamp.