Just currious what exhaust pipe diameter is recomended to not loose bottom end power. I know a straight through muffler with stock 2.25 exhaust pipe is popular and I have read that some 2.5" cat backs loose bottom end and some alledgedly gain bottom end. I would like to hear from people that have experience with a straight through muffler and these size pipes. I primarily drive at 3000 RPM or less so bottom end power is important. I previously had an 06 Tundra and the recomendation was to keep the stock pipe and just swap the muffler. The exhaust pipe was
2 3/8". I was thinking of maybe cutting up a factory Tundra exhaust and puting a straight through muffler. Thanks in advance for all opinions and information. My truck is an 03 Tacoma TRD 4x4 with the 3.4L.