Xr-1 or Cats???
Xr-1 or Cats??? Just installed Pacesetter's and ORY. I have Borla catback. At idle the car sounds great, however, under acceleration I think it sounds awful. What would be the best way to smooth out the sound, an XR-1 in the I-Pipe or cats in the Y? Also, which would flow better? Any other suggestions would be appreciated as well.
XR-1s where the cats are supposed to go would work best (for flow and making it quiet). If you run cats, get the Metal Matrix type as they flow the most.
__________________
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Originally Posted by Patrick G
XR-1s where the cats are supposed to go would work best (for flow and making it quiet). If you run cats, get the Metal Matrix type as they flow the most.
Originally Posted by Tim @ EADPerformance
Getting XR-1 to fit where cats go would be almost impossible. Now a Dynomax bullet or some sort of spiral flow will fit but you will still lose ground clearance. Best bet would to run a XR-1 in the I-Pipe without losing power. It should cut down 85% to 90% of the rasp. If you want to get rid of all the rasp, run high flow cats, but you will lose a few hp, although the new metallic cats seem to be losing less than 5hp on the dyno.
On The Tree
Joined: Apr 2005
Posts: 131
Likes: 0
From: San Antonio, TX
Originally Posted by AdamSS
I have Xr1 and ORy and it's still too loud. It really sucks at around 2000 rpms....the rasp is unbearable !!!!
In the future I'm gonna have a catted Y-pipe, and XR1 muffler
In the future I'm gonna have a catted Y-pipe, and XR1 muffler
, but now you say this!A lil more info would be helpful
.TIA
Jon
LOL - I'd say it's identical...
I've had both and it's just as annoying.
Note that:
1st setup: Stock headers, cats, Loudmouth
2nd setup: MAC Headers, NO CATS, XR1 welded into Loudmouth's resonator.
In both setups, I HAVE annoying rasp at 2000 rpms. Believe me, the only way to get rid of that stupid rasp is to have cats....
I've had both and it's just as annoying.
Note that:
1st setup: Stock headers, cats, Loudmouth
2nd setup: MAC Headers, NO CATS, XR1 welded into Loudmouth's resonator.
In both setups, I HAVE annoying rasp at 2000 rpms. Believe me, the only way to get rid of that stupid rasp is to have cats....
Trending Topics
Here.... a couple vids that I posted. That will give you an idea on how it sounds....
1st vid is initial startup with F10 cam, and 2nd is the cruise around the block.... It's untuned !
http://video.ls1tech.com/Player.aspx...F-C26374406F40
http://video.ls1tech.com/Player.aspx...B-7C8E47DCCA10
1st vid is initial startup with F10 cam, and 2nd is the cruise around the block.... It's untuned !
http://video.ls1tech.com/Player.aspx...F-C26374406F40
http://video.ls1tech.com/Player.aspx...B-7C8E47DCCA10
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 Having only the XR-1 or any bullet muffler is going to have rasp since it is straight through. But compare it to the rasp you have with open headers, and you will see how dramatic of a difference they can make. Since you are just trying eliminate some rasp from another existing muffler, the XR-1/bullet style mufflers do an excellent job of getting rid of the rasp.
If you want to hear what just a XR-1 in the i-pipe sounds like with no other mufflers, search for BorlaMouth exhaust, and Dynomouth for the same thing but with a dynomax bullet muffler.
Originally Posted by arctic2kss
LawmanSS:
Do you have anything behind the XR-1, I am planning on keeping my Borla catback, which can be left open of course.
Do you have anything behind the XR-1, I am planning on keeping my Borla catback, which can be left open of course.
In terms of flow, the XR-1 and dynomax are virtually the same since they are both straight through. The XR-1 has a 5 inch casing opposed to the dynomax's 3.5 inch casing which gives the XR-1 a lot more packing. The XR-1 will give more reduction in rasp, and will give you slightly more noticeable reduction in sound.
On The Tree
Joined: Apr 2005
Posts: 131
Likes: 0
From: San Antonio, TX
Originally Posted by half-n-half
TIA
JON
On The Tree
Joined: Apr 2005
Posts: 131
Likes: 0
From: San Antonio, TX
Originally Posted by kerryt1
How does the dynomax compare to the XR-1 in sound and flow capability?? Is it worth the extra $90 for the XR-1?
TIA
JON