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Having the exhaust done this week... Questions. 5.7L

3K views 16 replies 7 participants last post by  LS1GTO 
#1 ·
I'm having the exhaust done on my 05 wk 5.7L this week. I'm looking to help slightly increase fuel economy(along side intake and all) and get more performance and a better sound. I don't want it to be obnoxious or anything, just a nice rumble at idle.. deep growl around town and on the highway... but roar under heavy acceleration.

I'm a big Magnaflow fan so of course the brand is not in question at all. I found a video clip of the 11226 Magnaflow(14" body/20"overall) with factory resonator and it seemed to be almost exactly what I want. However, I saw on another thread someone had the next size larger(18"body/24"overall) and complained it was too loud. Isn't it the longer the muffler the quieter?

What's your guys input? Here is the clips of the one I heard and loved.

http://www.youtube.com/watch?v=fAfobfksKlE&feature=related
http://www.youtube.com/watch?v=57CiQP5uLq8&feature=related
 
#2 ·
Re: tiHaving the exhaust done this week... Questions. 5.7L

Hard to tell from those videos. Sounds stock to me, so I don't think it would be too loud. Need to hear it at idle vs wot. They could have given it a bit more gas in the drive-by.

If I were to do it, I would get rid of resonator.

Also, don't expect to see any mpg/hp gains from this.
 
#4 ·
Re: tiHaving the exhaust done this week... Questions. 5.7L

I am also thinking of either getting a MBRP or a Magnaflow (Just the Muffler) I just can't decide! I made a 5.7L Exhaust thread to see all the different kinds of mufflers that sound good.

In this video though it doesn't sound much different. I can hear the tone, but I'd expected a little more out of it.
 
#5 ·
Re: tiHaving the exhaust done this week... Questions. 5.7L

I had the new muffler put on tonight. It sounds a lot louder in the video then in person because i had the camera so close to the exhaust. It's quiet when I want and loud when I want and that's what I was looking for. noticed a 1.5mpg gain on the highway coming back from Reidsville too. If I didn't drive the exact same route both directions and the same speed with no differences in traffic, resetting the average gauge both ways I'd say no way but that's the facts. I've had compliments galore on it since I got it on.

http://s30.photobucket.com/albums/c3...t=DSCN1409.mp4
 
#6 ·
Re: tiHaving the exhaust done this week... Questions. 5.7L

I had the new muffler put on tonight. It sounds a lot louder in the video then in person because i had the camera so close to the exhaust. It's quiet when I want and loud when I want and that's what I was looking for. noticed a 1.5mpg gain on the highway coming back from Reidsville too. If I didn't drive the exact same route both directions and the same speed with no differences in traffic, resetting the average gauge both ways I'd say no way but that's the facts. I've had compliments galore on it since I got it on.

http://s30.photobucket.com/albums/c3...t=DSCN1409.mp4
how bout u rehost your video.....
 
#9 ·
Re: tiHaving the exhaust done this week... Questions. 5.7L

yes I did keep it on. I wouldn't to keep it fairly tame. I love it. loud when i want. quiet when i want. I do wish it was a bit louder at idle but it sounds much better then stock. had a nice low deep idle now but slightly quiet.
 
#14 · (Edited)
Re: tiHaving the exhaust done this week... Questions. 5.7L

Can we get a video of it like away from being up close? Like from a Far Distance and an in cabin video if that's not too much to ask for! Which Magnaflow did you go with?
I'll make some better videos this weekend. The girlfriends camera I got her is a much better one then the one at work i did that one with. I use slr's so no video for me... lol

Eurotrash,

Man that sounds great what does it sound like in the interior any drone sound. What magnaflow mufler part number did you get? I got resonator off my 5.7 with the stock muffler.

Chris
Thanks. it doesn't really have any drone at all. when(more like if) the mds kicks in there is a faint drone but nothing annoying. I was going to use the 11226 but he only stocked 2 1/4 inlet outlet mufflers so I think he put on the 11225? He told me all magnaflows are the same interior diameter just the inlets and outlets are different. He stretched it that extra 1/4 and welded it in.I was skeptical but this shop has amazing reviews not only by other customers but by friends and family that use them on their cars so I said ok. I love the sound and performance. Not a single complaint. well....the girlfriend says its annoying talking to me on the phone through the uconnect now.... funny thing is though when she notices it I don't so wonder if it's just the uconnects sensitivity?
 
#12 ·
Re: tiHaving the exhaust done this week... Questions. 5.7L

Eurotrash,

Man that sounds great what does it sound like in the interior any drone sound. What magnaflow mufler part number did you get? I got resonator off my 5.7 with the stock muffler.

Chris
 
#13 ·
Re: tiHaving the exhaust done this week... Questions. 5.7L

I can't help with the Magnaflow stuff, as I went with the Gibson. I wanted a full 3" system, which narrowed it down to Gibson and MBRP. The MBRP doesn't have a resonator so it drones. The Gibson is perfect for me. It's not obnoxious at all, it has a nice subtle rumble and doesn't drone at all.
 
#16 ·
Man that sounds great. Thanks for the videos.

ChrisWK
 
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