Does your exhaust go BLUB, BLUB, BLUB when you let up on the gas?

TROYXTROY · 05-30-2001, 11:05 PM

When I'm driving and I let up on the gas, I get this deep blub, blub, blub sound. It's pretty loud and definitely annoying. Is this normal with an aftermarket exhaust or do I have a problem with my car?
Thanks
-Troy

------------------
1995 GT Convertible, 5 Speed
Novi 2000 showing 10# of boost, Pro-M 77mm Mass Air Meter, 30# Injectors, 255lph Walbro Intank Fuel Pump, Bassani Equal Length Headers, X-Pipe & Cat-Back, Steeda G-Trac Stage 3 Suspension, Kenny Brown Extreme Sub System, Pro 5.0 Shifter, Cobra R Rims, FRPP King Cobra Clutch, Steeda Adjustable Clutch Quadrant & Cable

blueneonman1 · 05-31-2001, 12:54 AM

Hehehe, I like that sound. Ever since I hollowed my cats out, I get that same thing. One thing I think is cool and love to do on the road is drop it in 2nd going 55-60mph and BANG!!! A loud backfire happens

joe4speed · 05-31-2001, 01:47 AM

a little backfire on deceleration is a good thing!

------------------
Joe!
1988 GT, 167,000 miles!!! 13.58@105mph Check out my listing! Click here! Or my website:
www.joe4speed.com
1999 Ninja ZX-6R 10.32@135mph!
1993 Olds Eighty Eight LSS 16.40@88.8mph

05-31-2001, 04:19 AM

I get the same thing on my car, except i've never had it backfire.

------------------
'84 Mustang 5.0 LX
My car

TROYXTROY · 05-31-2001, 07:14 AM

Any way to make it not happen?
-Troy

Rick 91GT · 05-31-2001, 07:22 AM

Some times it is caused by a lack of back pressure and what you hear is the cold air being sucked back into the hot exhaust flow. Long tubes headers even make this more prone, as they scavage further down in the exhaust system.

Doesn't everyone with this problem have Off Road pipes? If you have hi-flow cats or cats in general it is less likely to happen.

------------------
Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!

smithbling · 05-31-2001, 08:12 AM

Quote:

Originally posted by Rick 91GT:
Some times it is caused by a lack of back pressure and what you hear is the cold air being sucked back into the hot exhaust flow. Long tubes headers even make this more prone, as they scavage further down in the exhaust system.

This is a bit of a long shot, but, if it is cold air being sucked back into the hot exhaust flow... (I too agree) Could it be similar to thunder?? I believe when a warm air mass hits a cold air mass you get thunder. Something to think about??

------------------
C ME FLY
88 Notch
MAC headers, H-pipe, and Chrome 2.5" pipes, pullies, K&N filter, BM shifter, 17" ROH ZR6, Dropped 1.5".

NoSlow5.0 · 05-31-2001, 07:21 PM

Yes, it's air being sucked back in the exhaust. But that is what you get for running an off road. But just remember the trade off, on decel your car may go...BLUB, BLUB, BLUB; but when you nail it it goes .....WWWAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!!!!!!!!! Light Em Up!!

gp001 · 05-31-2001, 09:37 PM

LOL - NoSlow5.0

You otta hear mine! With long tube Flowtechs into 3" Dr. Gas X-pipe, into 2 chamber Flowmasters it sounds like a Trans Am series race car

------------------
347 (Coast High short block), 279/284 .493/.510, TFS TW, Stealth, 750, Flowtech hdrs, Dr. Gas X, 2 Chmbr Flowmaster, MSD 6AL-Dist.& SS coil, March serpentine pulley system, Art Carr C-4, Currie 9" w/3.55, alum Drv Shft, susp mods, Total Control subframes & tower braces, Trans Am Racing power dual master, 4 wheel disc
In a 66 coupe

SLOWPONY · 06-01-2001, 09:48 AM

It is your injectors cutting out. It is like that from the factory. A custom chip can get rid of that. You can hear it louder because your exhaust is more freed up.

cptn.stangaroo · 06-01-2001, 11:01 AM

thats a sweet sound

5000cc · 06-02-2001, 11:06 AM

check for any leaks,mine was leaking and it make that kind of noise

TROYXTROY · 06-02-2001, 03:32 PM

Besides a visual check, is there any other way to check for leaks?
-Troy

------------------
1995 GT Convertible, 5 Speed
Novi 2000 showing 10# of boost, 3.55's, Pro-M 77mm Mass Air Meter, 30# Injectors, 255lph Walbro Intank Fuel Pump, Bassani Equal Length Headers, X-Pipe & Cat-Back, Steeda G-Trac Stage 3 Suspension, Kenny Brown Extreme Sub System, Pro 5.0 Shifter, Cobra R Rims, FRPP King Cobra Clutch, Steeda Adjustable Clutch Quadrant & Cable

Quik50HO · 06-02-2001, 08:55 PM

Mines always making some kind of noises, but mostly from exhaust. I have all 4 cats gutted and 3 Chamber Flows, doesn't sound is good is my 12' Second SN95GT, But it will...

------------------
89 LX 5.O (T-5, 5 Speed)
Basically Stock (Just got a couple of days ago)
FlowTech 1 5/8 Unequal Headers
3 Chamber Flows
4 Stock Cataylic Converters Gutted

05-30-2001, 11:05 PM	#1
TROYXTROY Registered Member Join Date: Jul 1999 Location: RI, USA Posts: 51	Does your exhaust go BLUB, BLUB, BLUB when you let up on the gas? When I'm driving and I let up on the gas, I get this deep blub, blub, blub sound. It's pretty loud and definitely annoying. Is this normal with an aftermarket exhaust or do I have a problem with my car? Thanks -Troy ------------------ 1995 GT Convertible, 5 Speed Novi 2000 showing 10# of boost, Pro-M 77mm Mass Air Meter, 30# Injectors, 255lph Walbro Intank Fuel Pump, Bassani Equal Length Headers, X-Pipe & Cat-Back, Steeda G-Trac Stage 3 Suspension, Kenny Brown Extreme Sub System, Pro 5.0 Shifter, Cobra R Rims, FRPP King Cobra Clutch, Steeda Adjustable Clutch Quadrant & Cable

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05-31-2001, 12:54 AM	#2
blueneonman1 Registered Member Join Date: Mar 2001 Location: Palm Harbor, FL Posts: 208	Hehehe, I like that sound. Ever since I hollowed my cats out, I get that same thing. One thing I think is cool and love to do on the road is drop it in 2nd going 55-60mph and BANG!!! A loud backfire happens . I love that. Yours will probably do the same. ------------------ Blueneonman - '95 5.0L Mustang GT Convertible \| K&N Custom Cold Air Intake \| FMS 9mm Wires \| Hollow Cats \| Flowmaster 2 Chambers \| BBK Subframes \| 6-pt Rollcage \| 14deg Timing \| King Cobra Clutch \| FMS Adjustable Clutch Cable \| Coolest Neon Lighting on a Mustang EVER! Homepage: http://www16.brinkster.com/blueneonman/ Best time: 14.578 @96.20mph

05-31-2001, 01:47 AM	#3
joe4speed He said Member...heh, heh Join Date: Sep 1999 Location: Jupiter, Florida U.S.A. Posts: 3,718	a little backfire on deceleration is a good thing! ------------------ Joe! 1988 GT, 167,000 miles!!! 13.58@105mph Check out my listing! Click here! Or my website: www.joe4speed.com 1999 Ninja ZX-6R 10.32@135mph! 1993 Olds Eighty Eight LSS 16.40@88.8mph

05-31-2001, 04:19 AM	#4
84stangLX Guest Posts: n/a	I get the same thing on my car, except i've never had it backfire. ------------------ '84 Mustang 5.0 LX My car

05-31-2001, 07:14 AM	#5
TROYXTROY Registered Member Join Date: Jul 1999 Location: RI, USA Posts: 51	Any way to make it not happen? -Troy

05-31-2001, 07:22 AM	#6
Rick 91GT Procharged! Join Date: May 1999 Location: Hanover, PA Posts: 1,539	Some times it is caused by a lack of back pressure and what you hear is the cold air being sucked back into the hot exhaust flow. Long tubes headers even make this more prone, as they scavage further down in the exhaust system. Doesn't everyone with this problem have Off Road pipes? If you have hi-flow cats or cats in general it is less likely to happen. ------------------ Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!

05-31-2001, 07:21 PM	#8
NoSlow5.0 YOU HAVE NO MARBLES!!!!!! Join Date: Aug 2000 Location: Jonesboro,Georgia,USA (Providence, Ri) Posts: 868	Yes, it's air being sucked back in the exhaust. But that is what you get for running an off road. But just remember the trade off, on decel your car may go...BLUB, BLUB, BLUB; but when you nail it it goes .....WWWAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!!!!!!!!! Light Em Up!!

05-31-2001, 09:37 PM	#9
gp001 Registered Member Join Date: Nov 2000 Location: So. Cal. Posts: 244	LOL - NoSlow5.0 You otta hear mine! With long tube Flowtechs into 3" Dr. Gas X-pipe, into 2 chamber Flowmasters it sounds like a Trans Am series race car ------------------ 347 (Coast High short block), 279/284 .493/.510, TFS TW, Stealth, 750, Flowtech hdrs, Dr. Gas X, 2 Chmbr Flowmaster, MSD 6AL-Dist.& SS coil, March serpentine pulley system, Art Carr C-4, Currie 9" w/3.55, alum Drv Shft, susp mods, Total Control subframes & tower braces, Trans Am Racing power dual master, 4 wheel disc In a 66 coupe

06-01-2001, 09:48 AM	#10
SLOWPONY Registered Member Join Date: Nov 2000 Location: detroit,mi Posts: 27	It is your injectors cutting out. It is like that from the factory. A custom chip can get rid of that. You can hear it louder because your exhaust is more freed up.

06-01-2001, 11:01 AM	#11
cptn.stangaroo Registered Member Join Date: May 2001 Location: nyc Posts: 29	thats a sweet sound

06-02-2001, 11:06 AM	#12
5000cc Registered Member Join Date: May 1999 Location: Hialeah,Fl,USA Posts: 57	check for any leaks,mine was leaking and it make that kind of noise

06-02-2001, 03:32 PM	#13
TROYXTROY Registered Member Join Date: Jul 1999 Location: RI, USA Posts: 51	Besides a visual check, is there any other way to check for leaks? -Troy ------------------ 1995 GT Convertible, 5 Speed Novi 2000 showing 10# of boost, 3.55's, Pro-M 77mm Mass Air Meter, 30# Injectors, 255lph Walbro Intank Fuel Pump, Bassani Equal Length Headers, X-Pipe & Cat-Back, Steeda G-Trac Stage 3 Suspension, Kenny Brown Extreme Sub System, Pro 5.0 Shifter, Cobra R Rims, FRPP King Cobra Clutch, Steeda Adjustable Clutch Quadrant & Cable

06-02-2001, 08:55 PM	#14
Quik50HO Registered Member Join Date: May 2001 Location: Clear Lake, Texas, USA Posts: 14	Mines always making some kind of noises, but mostly from exhaust. I have all 4 cats gutted and 3 Chamber Flows, doesn't sound is good is my 12' Second SN95GT, But it will... ------------------ 89 LX 5.O (T-5, 5 Speed) Basically Stock (Just got a couple of days ago) FlowTech 1 5/8 Unequal Headers 3 Chamber Flows 4 Stock Cataylic Converters Gutted