Let see those high flow Y-pipe mergers
Thread Starter
TECH Senior Member
iTrader: (35)
Joined: Nov 2007
Posts: 9,705
Likes: 12
From: C. V., Kalifornia
Well I finally got every thing installed, but the Moroso Spiral Flow (3.5" in/out)is killing me with the drone from about 1400-2000 rpm so it will most likely will be replaced soon with a Borla XR-1 #40086(15" case length).So here's some photos.
Last edited by 99Bluz28; Aug 10, 2011 at 07:33 PM.
How loud is that dumped single exhaust? My '98 currently has duals with on ORX and dynomax bullits.... Just a lil too loud for a DD. I was planning on going with a catback and an electric cutout, but this seems like another possibility.
Thread Starter
TECH Senior Member
iTrader: (35)
Joined: Nov 2007
Posts: 9,705
Likes: 12
From: C. V., Kalifornia
, but Monday I'll be swapping out the Spiral flow for a Borla XR-1 muffler. 
I would of stuck with a Magnaflow bullet muffler with this new set-up, but they don't offer a 3.5" in/out 5" diameter case muffler, so I thought I'd try a Spiral flow since I've heard good things about them.
I'll repost early this next week about the Borla XR-1 muffler.
Here's the XR-1
Last edited by 99Bluz28; Nov 4, 2012 at 03:22 PM.
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
99bluz28, I was wondering if you have some videos of the sound of your exhaust with the borla on there.
I want to get some tsp headers then do my own y pipe here soon, and have been looking at getting the vibrant with a 3in to a 4 out. Try to take it about 10 inches out the back to let the gases stablize and then reduce back down for my lm1...see how much rasp it reduces. If anything the borla was my fall back, but figured I already have the lm1 so why not try it.
Another question I had was do you know the angles of the y pipe, I want to get it figured out, or a close guestumation before I go to summit to pick some pipes up.
thanks
I want to get some tsp headers then do my own y pipe here soon, and have been looking at getting the vibrant with a 3in to a 4 out. Try to take it about 10 inches out the back to let the gases stablize and then reduce back down for my lm1...see how much rasp it reduces. If anything the borla was my fall back, but figured I already have the lm1 so why not try it.
Another question I had was do you know the angles of the y pipe, I want to get it figured out, or a close guestumation before I go to summit to pick some pipes up.
thanks
Thread Starter
TECH Senior Member
iTrader: (35)
Joined: Nov 2007
Posts: 9,705
Likes: 12
From: C. V., Kalifornia
Sorry, I never did get around to making a sound clip with just the Borla XR1 dumped, and anyway Borla doesn't even have a 5" diameter 4" in/out bullet muffler you could run. As far as the angle of the mandrel bends you could contact TSP or start a new thread asking, "What degree are the pipe bends that go into the new TSP y-merger?". I could guess from looking at a photo, but then you won't really know for sure if it's the correct degree of bends. IMO, It looks to me like you'll need two, 45*bends.
Last edited by 99Bluz28; Jun 28, 2012 at 11:44 PM.
