Posted 2013-03-20 12:19 AM (#5477) Subject: Strait Pipe??
Posts: 1
I have a 98 Cummins Turbo Diesel. Empty it get about 26-28 mpg, towing about 20-22. My friend wants to put a Strait Pipe on it..says it will get even better mileage. Is this true? And what are some good/bad things about strait pipes?
Posted 2013-03-26 1:38 PM (#5478 - in reply to #5477) Subject: RE: Strait Pipe??
Posts: 15
What you are getting mpg is excellent mpg. Let him straight pipe the mighty cummins and you will regret it. You have your truck to pull with. I don't think you bought it to ride around in.
Posted 2025-03-31 6:54 PM (#9967 - in reply to #5477) Subject: RE: Strait Pipe??
Posts: 2
Possibly, but not always. Removing restrictions in the exhaust system can reduce backpressure, which may improve engine efficiency slightly. However, your Cummins is already a turbocharged diesel, and the factory exhaust isn’t overly restrictive. Any gains would likely be minimal (1-2 MPG at best).
Strait Pipe??
