Q: Engine making a kind of choppy noise

asked by on

I got my car straight piped a while back and it never really gave me trouble till recently, it doesn't always happen only when I push my car and accelerate to quickly it'll start to make the noise, when I drive normally it doesn't happen. Their is no smoke or steam coming from my car, it's completely operable. Just makes the noise.

My car has 75000 miles.
My car has a manual transmission.

Hi there. One of the negative drawbacks of replacing OEM exhaust systems is the noise you’re hearing. This noise is typically caused by small backfires inside the combustion chamber due to the fact that most people don’t tune the engine to match the new exhaust design. You can take your car to a BMW specialist who will most likely adjust the fuel and ignition timing to fine-tune your vehicle or you can contact a professional mechanic to inspect the vehicle’s exhaust system for any other mechanical problems that may cause damage to your vehicle.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Engine making a kind of choppy noise

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

Q: My 1997 328i bmw has a leak is over heating and wont idle properly sometimes it wont even start now.

Hi there. In most cases, when an engine overheats, it creates a lot of heat and possibly steam to develop under the hood of the vehicle. This can, and often does, damage electrical harnesses, connections and other sensors; that must...

Q: air vents not blowing air plus heater does not get hot

Hi there. It is possible that the blower actuator is the source of this problem, however, before recommending replacement it is possible that a different issue is causing your problems; such as a stuck vent control arm or even a...

Q: I have Toyota Vitz 2001 model 2ZN engine. When I start engine in the morning I see white smoke from the exhaust. What do I have to do?

Hi there. White smoke that comes out of the exhaust system is caused by engine coolant burning in the combustion chamber. This is caused by the head gasket, a cracked head, or a cracked block making coolant go from the...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.