My exhuast noise changes.....why???

88Tsupra · 05-24-2007, 05:12 AM

On somedays my car will be quiet meaning that the idle is quiet its even quiet when i give it gas (still sounds really good but just not stuipd loud) i took out the resenator so i know the sound will change but that was done with my exhuast was done. But somedays the exhaust will sound so damn loud. sometimes it will sound really deep and loud at idle and when i give it gas it can cause u to go deaf

Does anybody elses supra do it too.

cre · 05-24-2007, 05:47 AM

Most changes are simply perceptual. In some cases it's a matter of the environment. My car sounds loud as hell in the city or on the highway as there are more objects to reflect the sound than when I'm out driving in the middle of nowhere. Humidity and temperature can also change effect how the air is moving through the engine and as such change the sound of the exhaust. More often than not I think the difference is perceptual... but yeah, I notice it too. Today in fact.

88Tsupra · 05-24-2007, 05:54 AM

your prolly right but even with cars or buildings around ti sounds the same just sometimes it gets to loud for me

cre · 05-24-2007, 06:06 AM

I know what you mean. My exhaust is still too loud for me. My friends think it sounds great, but I'd rather have it whisper quiet. I still need to add a resonator though, hopefully that'll tone things down enough to suit my tastes.

supradaddy0803 · 05-24-2007, 01:00 PM

Well mine is quieter than I would have thought. I have a HKS supper dragger and when I had it on my 7M n/a it was really deep and not too loud but sounded really good. Now that I got the 1JZ in my car it quieter. Actually at all power ranges quieter and I have a test pipe so it is pretty much straight back cept the HKS small single chamber and the big can at the back. I wonder if I up the boost if it will get louder prolly not knowing my luck.

mrnickleye · 05-24-2007, 03:37 PM

If you have the cat on, you may have broken/problem inside it. If you muffler is a reg. or chambered type, you may have something broken inside that moves around and blocks/openup the flow.

abhattan · 05-25-2007, 12:51 AM

If you like nice and quiet, but functional, I have the Tanabe Super Meddalion. It's great. All I hear is the turbo and the wastegate, and the slight 7M-GTE hum.

cre · 05-25-2007, 02:17 AM

Most exhausts sound like crap on an N/A. I've got 2.5" piping all the way back to the muffler. There's no raspyness or fluttering to the sound which N/A's usually have. My friends think it sounds "perfect" but I really don't see the need to hear my car's exhaust.I'm thinking of adding a 4" AeroTurbo resonator. With that and the Borla it should be quiet enough for my tastes. I've just got to sell the second Borla I've got before I go ordering more parts.

mrnickleye, I see where you're coming from. That's not the situation in my case (checked the cat thoroughly when I redid the exhaust), but it is something people should keep in mind.

IHateHacks · 05-25-2007, 02:49 AM

If you still have a cat on your car, news flash: that shit ain't loud. You want to hear deafening take the cat off and go 3" from the turbo back and listen for the wastegate to open, oh wait, you don't have a turbo....

88Tsupra my car is stupid loud at idle when I start it in the morning when its running its richest. When its fully warmed up it quiets down at idle. But as soon as I give it any throttle it just gets retarded "pull me over" loud. And when I make a WOT run you will lose your hearing if you are walking and I pass by you, its BAD. I have a full turbo back 3.25" exhaust with no cats.

What it comes down to is how much fuel you are burning. When your car is "louder" its most likely running rich.

cre · 05-25-2007, 03:42 AM

Quote:

Originally Posted by IHateHacks

If you still have a cat on your car, news flash: that shit ain't loud.

Oh yeah, I had to run to the parts store with my exhaust pulled... that was a built in back massage. My ears were ringing all day.

05-24-2007, 05:12 AM	#1
88Tsupra 12psi boost Join Date: Jan 2007 Location: long beach, CA Posts: 252	My exhuast noise changes.....why??? On somedays my car will be quiet meaning that the idle is quiet its even quiet when i give it gas (still sounds really good but just not stuipd loud) i took out the resenator so i know the sound will change but that was done with my exhuast was done. But somedays the exhaust will sound so damn loud. sometimes it will sound really deep and loud at idle and when i give it gas it can cause u to go deaf Does anybody elses supra do it too. __________________ 88turbo targa-white original Pin Stripe custom intake-Tenzo filter.....Momo racing seats and steering wheel... apexi exhaust tip-custom 3" piping. Replaced with RSR GT II NGK plug and wires HID conversion head lights HKS Turbo Timer Type-1 (in black) Tial BOV BIC DDP

05-24-2007, 05:54 AM	#3
88Tsupra 12psi boost Join Date: Jan 2007 Location: long beach, CA Posts: 252	your prolly right but even with cars or buildings around ti sounds the same just sometimes it gets to loud for me __________________ 88turbo targa-white original Pin Stripe custom intake-Tenzo filter.....Momo racing seats and steering wheel... apexi exhaust tip-custom 3" piping. Replaced with RSR GT II NGK plug and wires HID conversion head lights HKS Turbo Timer Type-1 (in black) Tial BOV BIC DDP

05-24-2007, 01:00 PM	#5
supradaddy0803 12psi boost Join Date: May 2006 Location: Athens, TX Posts: 308	Well mine is quieter than I would have thought. I have a HKS supper dragger and when I had it on my 7M n/a it was really deep and not too loud but sounded really good. Now that I got the 1JZ in my car it quieter. Actually at all power ranges quieter and I have a test pipe so it is pretty much straight back cept the HKS small single chamber and the big can at the back. I wonder if I up the boost if it will get louder prolly not knowing my luck. __________________ 1987 supra NA 5 speed 1JZGTE swap Tokico Illumina 2 and Eibach springs Tokico pillow blocks Suspension Techniques front and rear sway bar HKS super dragger cat-back exhaust plus test pipe Greddy Profec B spec 2 boost controller HKS type 1 turbo timer Supra sport solid steel drive shaft Walboro 255 fuel pump JZA70 Front end mod 18" Volk Racing AV3 18x8.5 front 18x9.5 rear

05-24-2007, 03:37 PM	#6
mrnickleye 1000whp postwhore Join Date: Jun 2005 Location: Mojave Desert, Calif. Posts: 1,705	If you have the cat on, you may have broken/problem inside it. If you muffler is a reg. or chambered type, you may have something broken inside that moves around and blocks/openup the flow. __________________ Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing. TEMS, and some nice MODS. Sold to a friend 10/08/08.

05-25-2007, 12:51 AM	#7
abhattan 3" Exhaust Join Date: Oct 2006 Location: Brentwood, New York Posts: 162	If you like nice and quiet, but functional, I have the Tanabe Super Meddalion. It's great. All I hear is the turbo and the wastegate, and the slight 7M-GTE hum. __________________ '91 Turbo Targa 5 Spd. '87 Corolla GT-S 5 Spd '91 Accord Daily Driver 5 Spd Soon to be rebuilt (All to some extent)

05-24-2007, 05:47 AM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Most changes are simply perceptual. In some cases it's a matter of the environment. My car sounds loud as hell in the city or on the highway as there are more objects to reflect the sound than when I'm out driving in the middle of nowhere. Humidity and temperature can also change effect how the air is moving through the engine and as such change the sound of the exhaust. More often than not I think the difference is perceptual... but yeah, I notice it too. Today in fact.

05-24-2007, 06:06 AM	#4
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	I know what you mean. My exhaust is still too loud for me. My friends think it sounds great, but I'd rather have it whisper quiet. I still need to add a resonator though, hopefully that'll tone things down enough to suit my tastes.

05-25-2007, 02:17 AM	#8
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Most exhausts sound like crap on an N/A. I've got 2.5" piping all the way back to the muffler. There's no raspyness or fluttering to the sound which N/A's usually have. My friends think it sounds "perfect" but I really don't see the need to hear my car's exhaust.I'm thinking of adding a 4" AeroTurbo resonator. With that and the Borla it should be quiet enough for my tastes. I've just got to sell the second Borla I've got before I go ordering more parts. mrnickleye, I see where you're coming from. That's not the situation in my case (checked the cat thoroughly when I redid the exhaust), but it is something people should keep in mind.

05-25-2007, 02:49 AM	#9
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	If you still have a cat on your car, news flash: that shit ain't loud. You want to hear deafening take the cat off and go 3" from the turbo back and listen for the wastegate to open, oh wait, you don't have a turbo.... 88Tsupra my car is stupid loud at idle when I start it in the morning when its running its richest. When its fully warmed up it quiets down at idle. But as soon as I give it any throttle it just gets retarded "pull me over" loud. And when I make a WOT run you will lose your hearing if you are walking and I pass by you, its BAD. I have a full turbo back 3.25" exhaust with no cats. What it comes down to is how much fuel you are burning. When your car is "louder" its most likely running rich.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Weird noise from MK IV 5-speed tranny!! Help!	Bone_Stock_Supra	MKIV Supra	9	01-16-2008 08:35 AM
Terrible noise from the Drivebelt area	94TT	MKIV Supra	2	12-04-2006 12:29 PM
exhaust noise	toonen	Non-Generation Specific Questions	2	05-19-2006 11:27 AM
Scratching noise in my '88	Black'88	MKIII Supra	2	03-24-2006 12:04 PM
help on knock knock noise	Guest	MKII Supra	3	05-31-2005 07:41 PM