Stock Exhaust system...

mickyg

7MGE MX-73
Sep 15, 2005
406
0
0
46
Melbourne AU
By the way, here's the stock exhaust (just so you know, this is what you have):
 

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mickyg

7MGE MX-73
Sep 15, 2005
406
0
0
46
Melbourne AU
Before I build a terrible reputation for myself, I'd like to clarify a few statements I've made.

1. Mufflers and resonators are not named that simply because of where they are in the exhaust chain. My comments might have made it look like that's what I was saying. Strictly speaking, a muffler is meant to quiet an exhaust, a resonator is meant to change the pitch (usually). They're named based on function, not location.

2. Backpressure is not essential for low end torque. What is essential however, is exhaust gas velocity. For a stock system the low rpm exhaust gas velocity is generally pretty good and high RPM is where things suffer. If you get a quality header with good high RPM characteristics, you'll likely lose low end responsiveness but not necessarily from the lack of backpressure. You'll lose it because your ex gas velocity is slowed by having to fill a larger volume. There's obviously a lot more happening here than my simple summary but just remember, good ex gas velocity helps an engine breath better.

If none of this is relavent to the post, my sincere apologies. I just realised I jumped in with advice that may have been just a tad misleading because of how I chose to explain things.

Hope that helps!
 

s383mmber1

New Member
Oct 31, 2005
3,614
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Somers New York
mickyg said:
Before I build a terrible reputation for myself, I'd like to clarify a few statements I've made.

1. Mufflers and resonators are not named that simply because of where they are in the exhaust chain. My comments might have made it look like that's what I was saying. Strictly speaking, a muffler is meant to quiet an exhaust, a resonator is meant to change the pitch (usually). They're named based on function, not location.

2. Backpressure is not essential for low end torque. What is essential however, is exhaust gas velocity. For a stock system the low rpm exhaust gas velocity is generally pretty good and high RPM is where things suffer. If you get a quality header with good high RPM characteristics, you'll likely lose low end responsiveness but not necessarily from the lack of backpressure. You'll lose it because your ex gas velocity is slowed by having to fill a larger volume. There's obviously a lot more happening here than my simple summary but just remember, good ex gas velocity helps an engine breath better.

If none of this is relavent to the post, my sincere apologies. I just realised I jumped in with advice that may have been just a tad misleading because of how I chose to explain things.

Hope that helps!

No bad reputatuion here!:biglaugh:
 

canadianbacon

Extra Crispy
Dec 10, 2005
226
0
0
54
Coquitlam, BC
If you have an NA there is no point in putting a test pipe in for you cat. (not enough gains) Also cut that stupid resonator out! I like the idea of a magna flow muffler but be aware of the "drown" noise... it becomes very irratating. Unless your Na is doing well over 250 HP which I doubt there is no point for a test pipe. Also NA's need back pressure, so the maximum you can run is 2.5 inch piping. I own 2 NA's and 1 turbo. The first Na has 2.5 cat back with a Magna Flow muffler with no resonator. It rumbles but I find it is too loud for me. It is a heat score!!:aigo: It also has a stock exhust manifold. My second one has Pacesetter header(ceramic coated) a Magna Flow cat (high flow) and 2 inch exhaust with no resonator and a Borla muffler. This one sounds tight! This NA is 250 hp. It kills my stock turbo HE HE!! If you don't want to spend tons of money start with the muffler to upgrade. Buy one at Lordco. I think there is one in Kelowna. Also check out the wreckers. You would be suprised what you can find for your car. Hopefully you don't have Aircare up there.
 

s383mmber1

New Member
Oct 31, 2005
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Somers New York
canadianbacon said:
If you have an NA there is no point in putting a test pipe in for you cat. (not enough gains) Also cut that stupid resonator out! I like the idea of a magna flow muffler but be aware of the "drown" noise... it becomes very irratating. Unless your Na is doing well over 250 HP which I doubt there is no point for a test pipe. Also NA's need back pressure, so the maximum you can run is 2.5 inch piping. I own 2 NA's and 1 turbo. The first Na has 2.5 cat back with a Magna Flow muffler with no resonator. It rumbles but I find it is too loud for me. It is a heat score!!:aigo: It also has a stock exhust manifold. My second one has Pacesetter header(ceramic coated) a Magna Flow cat (high flow) and 2 inch exhaust with no resonator and a Borla muffler. This one sounds tight! This NA is 250 hp. It kills my stock turbo HE HE!! If you don't want to spend tons of money start with the muffler to upgrade. Buy one at Lordco. I think there is one in Kelowna. Also check out the wreckers. You would be suprised what you can find for your car. Hopefully you don't have Aircare up there.

I disagree. Have you owned a non-turbo with a 3 inch exhaust and test pipe?
 

canadianbacon

Extra Crispy
Dec 10, 2005
226
0
0
54
Coquitlam, BC
s383mmber1 said:
I disagree. Have you owned a non-turbo with a 3 inch exhaust and test pipe?
Maybe you should think about going turbo. There is no point with an NA. :3d_frown: BACK PRESSURE:icon_conf . Anyways, anything bigger is better than stock. But why pollute the environment with your dumb test pipe. You can still get the exact same preformance WITH a high flow cat. Magna flow one is sleek. Besides, a test pipe belongs in a 300+ hp for a really noticable difference. I guess you can try with the NA for that.... but why do all that work when you can go turbo! That is why I have an NA for daily driver.:puke:
 

fiyota

I ♥ Boost
May 3, 2006
1,063
0
0
Kelowna, BC
hmm, I took a second look at my car... no cat is really visable, i thought it was within the shield for the manifold, but by the looks of that diagram, it should be right after the heat shield, so, looks like I have no cat (could be, it was kinda dark when I had the second look)... anyways...
would it be worth it to go 2.5" straight back to the resonator, with no muffler(thing in the middle)? Or should I just go and pick up a new resonator (the one at the end) to replace my one thats in rough shape?

Thanks a lot for all that have contributed!
 

mickyg

7MGE MX-73
Sep 15, 2005
406
0
0
46
Melbourne AU
If the old muffler is worn out and rattling, I'd replace that. Chances are you won't get a performance benefit by doing this but at least the annoyance of a broken part will be gone.

If you've got more in your budget, go for the 2.5" from where ever back (cat or where the cat would join or maybe even manifold). Chances are you will get a performance increase but possibly at the expense of some noise.

Simple as that!
 

fiyota

I ♥ Boost
May 3, 2006
1,063
0
0
Kelowna, BC
I dont mind a loud exhaust (kinda heaty tho...) but I am more a fan of a fairly quiet deep tone... Dont wanna sound like one of those hondas with a fatty 4" tin can can stickin out the back that you always hear/see rippin around...
 

fiyota

I ♥ Boost
May 3, 2006
1,063
0
0
Kelowna, BC
of course not... it's so sad to see every supra in kelowna have a big fatty coffee can stickin out the ass end em'.... I'm sure it's the same in van. The sad thing is, people think that cars without a big "tuner" exhaust tip aren't fast.... damn ricers...
 

mickyg

7MGE MX-73
Sep 15, 2005
406
0
0
46
Melbourne AU
Just my two cents, but I really like the look of aftermarket twin tip mufflers. Still looks almost stock but very classy as well.
 

canadianbacon

Extra Crispy
Dec 10, 2005
226
0
0
54
Coquitlam, BC
Nice call on the twin tip aftermarket exhaust. I like the look of the Magnaflow twin. Both tips are a 1.75 inch and the can does not hang too low. Defintitely classy, and suits the car. I have, as I said earlier, a Borla single tip that is 2 inch. What I liked about it was that it did not hang low. It actually was a very stream line oval shape that just tucked in nice. Also it sounds tight with no drone. Only when you "step on it" people hear you commin'!!!:naughty: The problem with those loud Magnaflow muffs is that everybody down here hears you commin' and wants to race. My girlfriend drives the 86.5 NA with 2.5 inch and Magna and people really give her looks! A blondie in a loud Supra!I guess it really comes down to bang for the buck. For the general aftermarket exhaust is 250-350 CDN. Good luck.
 

s383mmber1

New Member
Oct 31, 2005
3,614
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Somers New York
Remeber, our supra's are 6 cylinders, 3.0 liters.....

They will never, ever sound like a honda.

Our engines create very different tones than 4 cylinder b16's

Even a "fart" can wouldn't make our car sound remotly close to honda's




just my .02 cents