Ive tried 9 different exhaust setups and drove them for a week or so each. Although im no expert when it comes to exhaust ive learned from my error.
First, dont expect to get anything from your exhaust upgrade without removing them cats. Justins mids are the way to go. :rock:
X pipes if you want it loud H if your going to have it deep and mellow. But your talking about magna races huh?
Magnaflow race mufflers with or without resonators sounded like shit and only got worse. People cringed when i fled a parking lot and i tried to keep the rpms low as to not be embarassed. But i only had them without cats. I hit the nail on the head when i went catless mids, x pipe, exhaust cutouts behind that, and you can run any muffler you want behind that. Because you will never want to put the caps on. the only time my exhaust is capped and running my 4 mufflers is on long road trips that i plan on having conversations on the way.
My times are within hundredths of a second in the eighth either way, but the truck seams a little more torquey down low with caps in and free flowing mufflers :dontknow: But with caps off the truck seams faster when you can hear it! :rock: