How much does an exhaust muffler improve fuel economy?
Obviously, boosting fuel economy by 2 mpg is going to help pay off a new exhaust system pretty quickly. Bottom Line: Adding an after-market performance muffler or exhaust system will improve engine efficiency from 2-10%.
How does a bad ECM affect fuel economy?
Poor Fuel Economy. A faulty ECM disallows your engine from knowing how much fuel to burn in the combustion process. Typically, the vehicle consumes more fuel than it should in this situation. You’ll end up paying more for gas than you would with a functioning ECM. The ECM plays a vital role in engine performance.
How does electronic fuel injection work on a GMC?
Modern vehicles have a distributor that can respond to ECM control such that spark timing may be adjusted based upon the output of the MAP. When the MAP senses an increase in manifold vacuum at high rpm, the ECM electronically advances the spark. Similarly a reduction of manifold vacuum under heavy load causes the ECM to retard the spark.
Can a clogged muffler affect gas mileage?
However, as a general rule, adding an exhaust system isn’t going to effect your gas mileage dramatically unless there’s something wrong. A clogged muffler is about all you have to worry about (and that’s unlikely), but otherwise the very worst system won’t effect you more than 1mpg or so (and vice versa).
How does an exhaust system affect fuel economy?
So, not only do you notice big increases in MPGs, but you also enjoy more power and a deep, throaty growl. Stock exhaust systems typically feature narrow pipes and tight bends, constricting the flow of gases coming out of the engine.
What makes a stock exhaust system so good?
Stock exhaust systems typically feature narrow pipes and tight bends, constricting the flow of gases coming out of the engine. This can back up and choke the engine in its own exhaust.
Which is the best exhaust system for optimized fuel economy?
And, here at AutoAnything, we have all the information you need to find the best exhaust for fuel economy. Whenever you modify your vehicle, you want to make sure you choose high-quality performance parts. And, in order to do that, you need to choose from the brand names you can trust, like Flowmaster or Magnaflow.