I am looking to make this car louder as much as i can. I need to know what are the best combinations with the mid pipe either h or x, and then a catback exhaust system. Any help is appreciated! https://web-cars.com/phorum//read.php?3,36518,36518#msg-36518 Thu, 13 Aug 2026 18:55:51 +0000 Phorum 5.2.23 https://web-cars.com/phorum//read.php?3,36518,36697#msg-36697 https://web-cars.com/phorum//read.php?3,36518,36697#msg-36697 exhaust system including xpipe or hpipe can provide more power and can produce great sound that will satisfy your ears. you can also try axleback setup it also work with either header/midpipe combination]]> tam85 Pontiac GTO Forum Sat, 10 Apr 2010 17:32:20 +0000 https://web-cars.com/phorum//read.php?3,36518,36518#msg-36518 https://web-cars.com/phorum//read.php?3,36518,36518#msg-36518 msporter4 Pontiac GTO Forum Thu, 12 Nov 2009 20:01:57 +0000