2.5 vs 3 inch exhaust pipe. If you run too large of an exhaust you get lower exhaust gas pulse and slower scavenging of exhaust gasses resulting in. I had Flow master 40s before. A 3 down pipe to 25 exhaust shows a greater difference to the exhaust manifold back pressure than a 25 down pipe and a 3 exhaust. For the tailpipes only no real benefit of 3 pipes over 25. Are replaced up to the midpipe at this size to 3 you are slowing the speed of the exhaust gasses while it is already being cooled on the way out.
3 might be a pain to run over the axle just for clearance and usually the transition from 25 to 3 after the axle can look awkward if visible. You should add a 3 exhaust and re dyno to see how much you pick up. Side note when I had my 3 exhaust it seemed to drone less than the 25. But never tried 3 inch. Generally it has to do with horsepower levels. 3 should be louder than 25 if all parts are the same. Youre sitting around with your typical streetstrip V-8 and wondering should I get 25-inch-diameter exhaust pipes and mufflers or should I go 3-inch. I would recommend this set-up to anyone.
The muffs you use can limit the delivery truck sound but thats a bandaid. I dont wonder if a straight-through 25 will provide better flow then a 3 system just because of that problem. What i want to know really is every1s opinion on whether to go the 3 or 25. Pipe Diameter for Single Exhaust System.
A 3 down pipe to 25 exhaust shows a greater difference to the exhaust manifold back pressure than a 25 down pipe and a 3 exhaust. Sent from my iPhone using Tapatalk. Go with a 3 X pipeDynomax Ultraflos and 25 tailpipes. Transitioning from 3 down to 25 either after the crossover or after the mufflers if no crossover minimizes power loss.