header installation complete, questions about mufflers
Thread Starter
Staging Lane
Joined: Feb 2013
Posts: 56
Likes: 0
header installation complete, questions about mufflers I finished my Hooker 1 3/4" long tube header install along with my catted texas speed y-pipe. The car is really loud and raspy now. The muffler that is currently on the car is an SLP loud mouth 2. When I had the muffler off the car, I could see through it and it was completely hollow. Nothing inside at all, just smooth pipe. I am not sure if its supposed to be this way, or if a previous owner possibly gutted out the muffler. The stock manifolds/cats/y-pipe was pretty raspy. Adding the long tube headers and TSP y-pipe just took the rasp to another level.
What I was wondering is if there is a muffler out there that could quiet things down a bit without sacrificing too much flow or performance. Thank you.
What I was wondering is if there is a muffler out there that could quiet things down a bit without sacrificing too much flow or performance. Thank you.
12 Second Club
Joined: Jun 2012
Posts: 1,548
Likes: 1
I finished my Hooker 1 3/4" long tube header install along with my catted texas speed y-pipe. The car is really loud and raspy now. The muffler that is currently on the car is an SLP loud mouth 2. When I had the muffler off the car, I could see through it and it was completely hollow. Nothing inside at all, just smooth pipe. I am not sure if its supposed to be this way, or if a previous owner possibly gutted out the muffler. The stock manifolds/cats/y-pipe was pretty raspy. Adding the long tube headers and TSP y-pipe just took the rasp to another level.
What I was wondering is if there is a muffler out there that could quiet things down a bit without sacrificing too much flow or performance. Thank you.
What I was wondering is if there is a muffler out there that could quiet things down a bit without sacrificing too much flow or performance. Thank you.
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Keep in mind that the Borla XR-1 is a 5" dia. muffler. If you want it to tuck up as well as either of the 4" dia. mufflers(no clearance issues) I recommend you clearance the I-pipe area of the tunnel. If you decide to just mount the XR-1 lower to avoid clearancing, and your car is lowered then you will probably scrape the muffler on occasion if the car is lowered 1" or more. The same applies to the Magnaflow #12867 which is the same Dia.. Furthermore, if you currently or will be running a 3.5" dia. driveshaft you will run into clearance issues with a 5" dia. muffler in the I-pipe if the muffler is tucked up good, so in this case you will have to keep the muffler mounted down lower.
FYI, i'm running the BBK LT headers and ORY-pipe which will allow you to keep the I -pipe up high like with the factory exhaust.
Here's the magnaflow #12867 mounted off the y-pipe exit with the tunnel clearanced so the muffler could be tucked up tight. Car is lowered about 1.75" in this photo.
FYI, i'm running the BBK LT headers and ORY-pipe which will allow you to keep the I -pipe up high like with the factory exhaust.
Here's the magnaflow #12867 mounted off the y-pipe exit with the tunnel clearanced so the muffler could be tucked up tight. Car is lowered about 1.75" in this photo.
Last edited by 99Bluz28; May 31, 2014 at 02:33 PM.
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Staging Lane
Joined: Feb 2013
Posts: 56
Likes: 0
Keep in mind that the Borla XR-1 is a 5" dia. muffler. If you want it to tuck up as well as either of the 4" dia. mufflers(no clearance issues) I recommend you clearance the I-pipe area of the tunnel. If you decide to just mount the XR-1 lower to avoid clearancing, and your car is lowered then you will probably scrape the muffler on occasion if the car is lowered 1" or more. The same applies to the Magnaflow #12867 which is the same Dia.. Furthermore, if you currently or will be running a 3.5" dia. driveshaft you will run into clearance issues with a 5" dia. muffler in the I-pipe if the muffler is tucked up good, so in this case you will have to keep the muffler mounted down lower.
FYI, i'm running the BBK LT headers and ORY-pipe which will allow you to keep the I -pipe up high like with the factory exhaust.
Here's the magnaflow #12867 mounted off the y-pipe exit with the tunnel clearanced so the muffler could be tucked up tight. Car is lowered about 1.75" in this photo.
FYI, i'm running the BBK LT headers and ORY-pipe which will allow you to keep the I -pipe up high like with the factory exhaust.
Here's the magnaflow #12867 mounted off the y-pipe exit with the tunnel clearanced so the muffler could be tucked up tight. Car is lowered about 1.75" in this photo.
At stock height you shouldn't need to be concerned with scraping the muffler case(regardless if the I-pipe tunnel area is massaged for clearance ), but I'd still make a extra effort to mount muffler up close to the tunnel/body and make sure it far enough away from the drive shaft to avoid any contact at full suspension droop, and compression. Mounting a 5" dia. muffler in the I-pipe area isn't really a problem as long as take into account the reduction in clearance with the larger dia.. FYI, I'm not trying to steer/scare you away from using a 5" dia. muffler, just trying to help you avoid ever having any clearance issues.
BTW, the Borla XR-1(or Magnaflow #12867)should work very well for you.
BTW, the Borla XR-1(or Magnaflow #12867)should work very well for you.
Launching!
Joined: Dec 2012
Posts: 206
Likes: 10
From: California Central Valley
99Bluz28 is right. You won't have to worry about scraping one of those at stock height. But you should still try to tuck it up as far as possible in case you ever do want to lower it down the road sometime.