02 Impala pop noise after accelerating?

Question

When i let off the gas at 25-30 mph i hear a pop noise. Any ideas

Answer 1

That means it's time for a tuneup,your spark plugs are bad and having  the timing chain or belt change it will improve power in your engine, remember your car might have alot of miles, all belts get worn and plugs too

Answer 2

my answer is try to tune-up your car....