Question about flowmaster - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 02-02-2004, 05:34 PM   #1
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: May 2003
Location: jacksonville, florida
Posts: 221
Thanks: 0
Thanked 0 Times in 0 Posts
laydbaak is on a distinguished road
Default Question about flowmaster

I took my Bonnie to a shop here that sells and installs flowmasters and the guy told me he could do the job for about $180.00 but advised me not to do it because he says for some reason the flowmasters on the Bonnies do not sound good. He told me he had done 3 Bonnies with the same results and after that he began to advise Bonnie customers he could do the job, but he has tried to steer them away from it. Has anyone else had this happen to them?, and are there some negative feed back to installing Flowmasters on our cars. Also went to gut my airbox Saturday only to find out some one had beaten me to it. Guess I have to change my signature!
laydbaak is offline   Reply With Quote
Old 02-02-2004, 05:37 PM   #2
Senior Member
Certified Car Nut
 
Join Date: Jun 2003
Posts: 15,928
Thanks: 0
Thanked 0 Times in 0 Posts
BonneMeMN is on a distinguished road
Default

You can't really gut a 94 airbox if it'* the same as my 93. You can run ducts to it for a ram air effect.

Want clips of flowmasters on a 1994 Se? I can upload some to my website for you later tonight.
BonneMeMN is offline   Reply With Quote
Old 02-02-2004, 06:09 PM   #3
Senior Member
Posts like a Turbo
 
Join Date: Jan 2004
Location: Springfield, Illinois
Posts: 376
Thanks: 0
Thanked 0 Times in 0 Posts
rhalford15 is on a distinguished road
Default

I had a flowmaster on my 94 se and it was the worst sound i had ever heard my car make. But, to each his own.
rhalford15 is offline   Reply With Quote
Old 02-02-2004, 08:21 PM   #4
Senior Member
Certified GM nut
 
Join Date: Sep 2002
Location: Eden Prairie, MN
Posts: 1,728
Thanks: 0
Thanked 0 Times in 0 Posts
zzzzzeke is on a distinguished road
Default

i love mine and won't trade it for anything!
zzzzzeke is offline   Reply With Quote
Old 02-02-2004, 10:12 PM   #5
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: May 2003
Location: jacksonville, florida
Posts: 221
Thanks: 0
Thanked 0 Times in 0 Posts
laydbaak is on a distinguished road
Default

AAAAhhhhhh!! So that explains why my airbox did not look quite like the pictures I saw in the techinfo thread I used. I think I will leave it as it is. I saw the pictures of the ram jet effect. Good idea, but I don't think I will try it. Thanks. Still waiting for my MSD coils. Ordered last week from Avanced Auto. Checked today and was told MSD says they were back ordered and they were scheduled to be shipped tommorow. Have appointment to get windows tinted in 2 days. I think I will pass on the flowmaster for now and put that cash into the paint job I plan on getting in a couple months. I would like to hear if there are any more people out there that have had negative results with flowmasters. I am trying to decide if I would want to chance putting the money into the installation at a later date. Thanks guys. Oh yeah, please upload those clips to your website and I will take a listen to them.
laydbaak is offline   Reply With Quote
Old 02-02-2004, 10:42 PM   #6
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

The demand for MSD coils is higher now that Chevy is running the 3800 in the W bodies. MSD has gone on backorder already (twice last year that I know of).

The Flowmaster will vary in sound from Bonneville to Bonneville. Probably more dependent on whether or not you have a resonator, and what type of Cat you're running. My exhaust guy didn't mention the difference in sound when selecting my muffler, but rather flow rates and end performance. The Magnaflow bench flows and dyno'* about 2% higher. Neglible difference.

I know Jim'* Magnaflow sounded different than others I've heard. It may be due to the outlet configuration (he had 2 parallels? Or one with dual tips?). The point is that there are alot of other factors that will affect the sound a particular muffler makes.
willwren is offline   Reply With Quote
Old 02-02-2004, 11:35 PM   #7
Senior Member
Posts like a Northstar
 
Join Date: Aug 2003
Location: Buffalo Grove, IL
Posts: 666
Thanks: 0
Thanked 0 Times in 0 Posts
Glasuan is on a distinguished road
Default

I have heard that flowmasters are the loudest out of all the choices. Other than that, everything Will said is right to the point.
Glasuan is offline   Reply With Quote
Old 02-03-2004, 12:24 AM   #8
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Flowmaster is supposed to be the loudest in general (not always, depending on other variables), and Magnaflow in the middle. Dynomax is supposed to be the quietest, but the most restrictive of the three, with a raspy note.
willwren is offline   Reply With Quote
Old 02-03-2004, 12:46 AM   #9
Senior Member
Certified GM nut
 
Join Date: Feb 2003
Location: Georgia
Posts: 2,095
Thanks: 0
Thanked 0 Times in 0 Posts
DrJay is on a distinguished road
Default

Actually I read an article some time back saying that Flowmaster is a little misleading by their name. The article said flat out that most flowmasters actually flow less than their equivalent competition. Trying to refind the article I stumbled across this:
http://www.svtoa.org/articles_006.htm

Which shows, with numbers, what the previous article (unrelated webpage) had said.
DrJay is offline   Reply With Quote
Old 02-03-2004, 12:56 AM   #10
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

I'd heard that myself, and my exhaust guy backed it up (with numbers off the top of his head). That'* why I went Magnaflow. That page says the Flowmaster is pretty much crap. I'd like to see a comparison with the Magnaflow to see where it falls. Magnaflow, Dynomax, and Flowmaster.....that would be a good comparison for our preferences.

Thanks, Doc.
willwren is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
zzzzzeke's flowmaster muffler zzzzzeke Your Ride: GM Pictures & Videos 19 06-22-2003 08:44 PM
what does a flowmaster 80 on a bonny sound like? Nytro67 Performance, Brainstorming & Tuning 6 05-10-2003 11:43 PM
Flowmaster BonneAlien Performance, Brainstorming & Tuning 19 03-05-2003 10:19 PM
flowmaster exhaust ? 94bonnese Performance, Brainstorming & Tuning 1 03-04-2003 07:29 PM
Flowmaster Muffler ridic2002 Performance, Brainstorming & Tuning 3 09-06-2002 11:13 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:51 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.