Floorman279

iTrader: (11)

Ditching the duals and going 3" y to 4" dump. Flowmaster is the cheapest and was at one time real popular......only negatives are length and aluminized stainless.....and many say it performs great......thoughts?

01ssreda4

iTrader: (96)

Yep, its legit, had one for a long time. Only reason I dont now is because they didnt make a 3.5>4.

Floorman279

iTrader: (11)

Dos it actually have scavenging benefits? I understand how Xs scavenge but can picture how these do

01ssreda4

iTrader: (96)

Im not an engineer but its one of the more favored ones and I believe there is some dyno data somewhere to back it up.

RevGTO

iTrader: (12)

Looking at the FM versus others, the merge transition on the FM is more gradual. Others neck down more quickly and sharply. The FM appears like it would flow better.

I have had them on both my 2.5>3" and 3>3.5" Y-pipes and have been pleased. The only downside is that is a heavy piece compared to the other stainless versions.

ss454327

iTrader: (10)

The Y merge will have more scavenging than an X pipe.

455GTO

iTrader: (18)

I'm running the following exhaust setup:

Speed Engineering 1 7/8 LT's
3" to 4" Flowmaster merge
4" cutout

It made a substantial difference in both sound and top end performance. I went with 4" as I'm spraying 300+

Floorman279

iTrader: (11)

Glad to hear ppl liking the y.....will post back on monday after install.....never heard a 3 to 4

wph351

iTrader: (3)

Just received my 3" to 3.5" FM today. It passes the eyeball test. They come together nicely, very gradual. It is a bit long as previously noted.

Floorman279

iTrader: (11)

Got the bullet and flowmaster merge on.....extremely happy with improved sound over my non x or h pipe duals......one question, do all u dumps guys have mre vibrations?

Full-Force

iTrader: (11)

its gonna drone if its dumped. Do you have a turndown on it? If not, put one on it and angle it outwards at 45*. Makes all the difference in the world

Get us some pics

Floorman279

iTrader: (11)

For ground clearance it's straight down.....so looks like they took.a 90 degree for inch and cut it.....I'll get a pic later.......is vibration similar to drone?

Full-Force

iTrader: (11)

Maybe. That turndown being straight down is gonna cause all kinds of drone and buzzing inside the car. It will sound the best straight down because it will be deep and bassy but pointing that turndown out at 45* makes all the difference in the world.

farmington

iTrader: (14)

got a new 3-3.5 Flowmaster Merge I no longer need. anybody make me a decent offer and its yours.

landstuhltaylor

iTrader: (6)

When I first installed the latest iteration of my dumped Y it was pointed directly out the side of the car. I only drove it one day like that, but there were a lot of vibrations transmitted to the cabin. Rotating the dump to a 45 degree fixed all of that. It's really not too obnoxiously loud either. Gets old driving out to Nebraska and back, but for weekend trips around town it's perfectly fine.