Magnaflow and Slp LM
Thread Starter
TECH Addict
Joined: Apr 2009
Posts: 2,354
Likes: 2
Magnaflow and Slp LM Is it just me or does magnaflow sound alot deeper than lm. I have magnaflow cat back on my ls1, and my buddy has loud mouth. At idle they sound alike but when he jumps on the throttle his sounds kind of raspy, where are my car sounds much deeper although not as loud. What do you think.
Thread Starter
TECH Addict
Joined: Apr 2009
Posts: 2,354
Likes: 2
my magnaflow is so quiet i think i love the tone and deepness... just which i could turn the volume up... i need to cut off my cats or get a cutout to hold me off till i get longtubes... would anyone suggest cutting off the cats and putting straight pipes in? my buddy has a shop and said he would do it for free lol sorry for
lol
lol Thread Starter
TECH Addict
Joined: Apr 2009
Posts: 2,354
Likes: 2
my magnaflow is so quiet i think i love the tone and deepness... just which i could turn the volume up... i need to cut off my cats or get a cutout to hold me off till i get longtubes... would anyone suggest cutting off the cats and putting straight pipes in? my buddy has a shop and said he would do it for free lol sorry for lol
lol Magnaflow sounds good to me other than a little raspyness and the lm is just plain loud and raspy without a defined tone. If you want a nice deep tone without rasp go with the slp powerflo.
Trending Topics
Thread Starter
TECH Addict
Joined: Apr 2009
Posts: 2,354
Likes: 2
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Teching In
Joined: Feb 2010
Posts: 25
Likes: 0
From: Gloucester area Va
I would say its pretty loud I can hear it for a long time if someone else drives it.Makes the car sound more powerful than it is.Sounds like a monster of a car coming when its floored.My rasp is very minimal I would guess being stock.If I turned more rpms I would look at the Borlamouth set up I have heard about.Oh yea I heard one at a road course with the loudmouth,headers,and ory.Have to say it sounded like T total ****.It rasped pretty much through the whole rpm range.Sounded like a honda on steriods to me.I felt bad for his instructor.
Thread Starter
TECH Addict
Joined: Apr 2009
Posts: 2,354
Likes: 2
LT's (especially ORY) will change the exhaust sound tremendously. My LM1 was super awesome stock, but LT's and ORY made it awful, a 3600stall converter made it unbearable. I went with a magnaflow bullet and I just ordered a magnaflow catback. I'll tell you how I like it when I install it in a few days.
I never though I would be one of these old men on here that complain about their car being too loud....but it was. Do a classy exhaust with a cutout, you'll be happy you did.
LM1 is a great exhaust, flows really well. The LM2 muffler is a good choice to quiet it down without spending a fortune.
I never though I would be one of these old men on here that complain about their car being too loud....but it was. Do a classy exhaust with a cutout, you'll be happy you did.
LM1 is a great exhaust, flows really well. The LM2 muffler is a good choice to quiet it down without spending a fortune.
I've had:
LT's, ORY, Magnaflow
LT's, ORY, LM2
and LT's, ORY, Borlamouth
My favorite out of the 3 is definitely the Borlamouth. It's still kinda raspy, but NOTHING like the LM systems. It gives it that cleaner Borla sound with the loudness of a LM2 system. My LM2 was REAL deep under 2 grand, then after 2 grand til about 3,500 it was just straight rasp then it hit about 4 and it was SCREAMING! Magnaflow was clean and deep all through the powerband. I never had ANY rasp with it. Really quiet at idle though. The Borlamouth is deep until 2 grand, starts to get a little rasp until about 3 grand then at full throttle is screams like the LM2.
LT's, ORY, Magnaflow
LT's, ORY, LM2
and LT's, ORY, Borlamouth
My favorite out of the 3 is definitely the Borlamouth. It's still kinda raspy, but NOTHING like the LM systems. It gives it that cleaner Borla sound with the loudness of a LM2 system. My LM2 was REAL deep under 2 grand, then after 2 grand til about 3,500 it was just straight rasp then it hit about 4 and it was SCREAMING! Magnaflow was clean and deep all through the powerband. I never had ANY rasp with it. Really quiet at idle though. The Borlamouth is deep until 2 grand, starts to get a little rasp until about 3 grand then at full throttle is screams like the LM2.
I have LT's, ORY, LM1 with a cam. It's definitly loud and i can be heard quite easily 
haha. I love loud cars, i'm actually changing to headers with a bullet a little off collector dumped so should stay just as loud. My friends back home have LT's, ORY, and magnaflow catback, sounds awesome. They also have cutouts so can be REAL nice but when closed still sounds pretty mean.
haha. I love loud cars, i'm actually changing to headers with a bullet a little off collector dumped so should stay just as loud. My friends back home have LT's, ORY, and magnaflow catback, sounds awesome. They also have cutouts so can be REAL nice but when closed still sounds pretty mean. 
Teching In
Joined: Jul 2008
Posts: 18
Likes: 0
Ok, so I have a lm1 and was going to get rid of it and get a magnaflow as I was putting on lts. Well now the lts are on with a carted y and it's nowhere near as bad as anyone on this board made it out to be. In fact it sounds bad ***.
