Author Topic: Whiteman (Read 747 times)

SteveBailey · « **Reply #15 on:** May 18, 2007, 07:29:02 PM »

I have flowmasters on my vette.. I'm quite pleased w/ the sound and HP/TQ.

DiabloTX · « **Reply #16 on:** May 18, 2007, 08:36:38 PM »

On your vintage Corvette I am sure they are very good. However, on LS1 F-body's their are inferior to the other cat-backs.

whiteman · « **Reply #17 on:** May 18, 2007, 08:55:50 PM »

my friend works at G-force said they've seen cars loose hp with flowmaster over the stock catback on LS-1's.

DiabloTX · « **Reply #18 on:** May 18, 2007, 10:34:42 PM »

Speaking of, I just sent a PM to Mike at G Force to see if he can do a mod on a Magnaflow cat-back for me. If he can do it then I will have it done.

SteveBailey · « **Reply #19 on:** May 19, 2007, 12:07:35 AM »

Quote

Originally posted by DiabloTX
On your vintage Corvette I am sure they are very good. However, on LS1 F-body's their are inferior to the other cat-backs.

Maybe, but I'm putting 430 to the pavement(before the sauce) so it needs to breathe a bit more than a stock LS1.

I wasn't clear though, I have flowmasters but no cats so I do not technically have a "cat back".

I looked into them before I did major mods. Corsas and Magnaflows are nice but I prefer the sound of the 2 chamber flowmasters. Really, it's just a personal preference. I would not believe that the difference between them is all that significant. From what I understand, you can't get the most out of any catback until you get a good set of headers and a nice free breathing cat(s)

DiabloTX · « **Reply #20 on:** May 19, 2007, 12:13:45 AM »

Yeah, on other applications the Flowmasters are quite good. That's why you see a majority of trucks and other cars with Flowmasters. For some reason they didn't engineer their LS1 F-body cat-back with a high flow rate in mind.

SteveBailey · « **Reply #21 on:** May 19, 2007, 01:30:05 AM »

Quote

Originally posted by DiabloTX
Yeah, on other applications the Flowmasters are quite good. That's why you see a majority of trucks and other cars with Flowmasters. For some reason they didn't engineer their LS1 F-body cat-back with a high flow rate in mind.

Well, that was silly of them(IMHO), considering all the LS1's out there and the potential they have for mods.

whiteman · « **Reply #22 on:** May 19, 2007, 04:30:41 AM »

Quote

Originally posted by SteveBailey
From what I understand, you can't get the most out of any catback until you get a good set of headers and a nice free breathing cat(s)

i've had a cut out on stock exhaust, hooker headers & hooker off road y-pipe (no cats) with magnaflow, and the same headers with same y-pipe with Borla open plate and the finale combo is off the fing cain. the only way to go, optimal flow especialy on the big end. flow master has earned the name flow disaster.

SteveBailey · « **Reply #23 on:** May 19, 2007, 07:02:46 PM »

Maybe for cat backs, I can't say. The mufflers work nicely for me.
Do you have any flow numbers for the systems? Have you ever actually used Flowmasters and had problems?

whiteman · « **Reply #24 on:** May 19, 2007, 10:37:06 PM »

it sounded good on my truck but felt like a dog(flowmaster). i just didn't want to drop 800 for ona n exhuast for a 8 year old truck. I'll look for the numbers but it's been proven plenty of times it's just a noise maker on a LS1, not even a good one at that.

Bronk · « **Reply #25 on:** May 20, 2007, 05:38:19 AM »

Quote

Originally posted by whiteman
it sounded good on my truck but felt like a dog(flowmaster). i just didn't want to drop 800 for ona n exhuast for a 8 year old truck. I'll look for the numbers but it's been proven plenty of times it's just a noise maker on a LS1, not even a good one at that.

Hmm what make of truck.
Have 50 series FM on my R/T Dakota sounds great and doesn't feel doggish at all.

Bronk

whiteman · « **Reply #26 on:** May 20, 2007, 07:36:09 AM »

Quote

Originally posted by Bronk
Hmm what make of truck.
Have 50 series FM on my R/T Dakota sounds great and doesn't feel doggish at all.

Bronk

it was an 89 chevy 1500 with the 350, that was installed in 97. like i said sound good/great just no performance gain what so ever but that truck has long been gone.

i said the FM catback sucks but meant to say replacement muffler, don't think they make a full cat back. again for LS1's no, for new trucks maybe their ok but i wouldn't waste the money for for an LS1 when there are much better stainless steel systems to choose from. my friends shop won't even sale them unless you just have to have it which they'll just recomend you to a local muffler shop.

Best flowing for an LS1 is actaully the Hooker Arrow Chamber, not expensive but doesn't have the nasty sound the Borla or Corsa does.

Maganflow and Mufflex are also two others that flow great and are decently priced.

The SLP loudmouth is just that loud, not a big fan of that one. And another one my friends shop tries to steer people away from.

Borla is the way to go, It's adjustable, flows, the sounds great and it has a million mile warranty.

This looks like an LS1tech thread

DiabloTX · « **Reply #27 on:** May 20, 2007, 02:14:34 PM »

Quote

Originally posted by whiteman
This looks like an LS1tech thread

Well, sorta. We need a bit more cursing and mind numbingly bad grammar/spelling with a lot more 1337 speak tossed in.

eagl · « **Reply #28 on:** May 20, 2007, 04:39:03 PM »

I'm still thinking about a catback replacement, but I really don't want anything loud and all the ads and testimonials all talk about how great they sound, blah blah. I don't really care how it sounds as long as it is quiet and flows better than stock...

I did just a muffler swap and it's too loud... It's a POS flowmaster muffler that flows better than the stock muffler but it drones at freeway speeds and it's rusting out due to driving on salt for 2 winters so I wouldn't mind a total catback swapout if I can find one that isn't too expensive and which is as quiet as possible.

DiabloTX · « **Reply #29 on:** May 20, 2007, 06:16:24 PM »

Here ya go eagl.

A plethora of sounds.