Is their a dual tip exhaust system?

[98GS420A]

Sorry about another exhaust question. I'm looking for a dual tip cat back exhaust system other than stock that isn't much louder. I was looking at the thermal systems but it says it's for a more aggressive built vehicle and my vehicle is mostly stock. Could it work for my vehicle? Is there other exhaust system that has the dual tip or not? Thank you for your answer.

 

[LordZed]

The Thermal is an awsome system. One of the best for power and sound supression IMO. A good exhaust is ok even on a mostly stock car. The only thing that could effect your fun factor would be on a bone stock car, if you ran a 3" exhaust, you may get a little more turbo lag. But if you still have the stock down pipe and a cat, there will still be enough back pressure for you to not really notice any lag. Plus they look great, sound great, and you can always add more power later to complement the system.
A lot of people wind up building there own to meet there needs. It's hard to find a dual tip system that looks good and sound's good.

 

[thekellbeast]

Do you mean dual tip on the muffler, or dual mufflers? If you meant a single muffler w/ dual tips, I believe that Magnaflow makes a stock looking muffler, 3" in, various dual exits.

Yep, here it is. First on the left.
http://www.magnaflow.com/02product/shopdisplaycategories.asp?zone=main&id=301

Also available in polished if that's your thing. Scroll like halfway down.
http://www.magnaflow.com/02product/shopdisplaycategories.asp?zone=main&id=350

They also have their 'turbo' series.
http://www.magnaflow.com/02product/shopdisplaycategories.asp?zone=main&id=303

If you're more of a Flowmaster type of guy, they have a few models that might work. Take a peek at their standard and super 40 models.
http://www.flowmastermufflers.com/mufflers.html

 

[LordZed]

Excellent options for mufflers, but I think he may be looking for a full cat back system. Those are great link's if your building your own or having someone build it. Vibrant makes really cool dual tip muff's too. You can even get them in black for that sleeper look.

 

[Xeiros]

The Thermal is an awsome system. One of the best for power and sound supression IMO. A good exhaust is ok even on a mostly stock car. The only thing that could effect your fun factor would be on a bone stock car, if you ran a 3" exhaust, you may get a little more turbo lag. But if you still have the stock down pipe and a cat, there will still be enough back pressure for you to not really notice any lag. Plus they look great, sound great, and you can always add more power later to complement the system.
A lot of people wind up building there own to meet there needs. It's hard to find a dual tip system that looks good and sound's good.

I was under the impression that a turbo car would provide all the backpressure the car would ever need, and that is why you can get away with dumping at the O2 houseing.

 

[LordZed]

I was under the impression that a turbo car would provide all the backpressure the car would ever need, and that is why you can get away with dumping at the O2 houseing.

Dumping at the O2 for a drag car that launches at 6K and stays at 6-9k rpm all the way down the track, no back pressure required. Tooling around town at 2500 rpm and pressing the gas, some is needed. Otherwise nothing happens untill the upper rpm range. From a driveability stand point any how.
Perhaps I'm mistaken?

 

[snox135]

It appears at the time he is N/A.

 

[LordZed]

It appears at the time he is N/A.

I just lost 120pts for not reading his vehicle description.

In that case, a larger exhaust will not effect you negativly what so ever. With n/a bigger is better.

 

[Xeiros]

Opps, yeah, didn't see the N/T ref.

Anyways, here's a writeup someone did on back pressure.

http://www.dsmtuners.com/forums/showthread.php?t=168578


Very good read.

 

[My91TalonTSi]

I just lost 120pts for not reading his vehicle description.

In that case, a larger exhaust will not effect you negativly what so ever. With n/a bigger is better.

Isn't it the exact opposite? In a turbo application you want as little back pressure as possible versus a N/A set up where some back pressure is needed.

See this thread for more info:

http://www.dsmtuners.com/forums/showthread.php?t=71948&highlight=backpressure+toss+control

 

[My91TalonTSi]

Opps, yeah, didn't see the N/T ref.

Anyways, here's a writeup someone did on back pressure.

http://www.dsmtuners.com/forums/showthread.php?t=168578


Very good read.

That was a good read, especially for the N/T guys who need to figure out the fine line of going too big or not big enough.

 

[SRTthis]

I just lost 120pts for not reading his vehicle description.

In that case, a larger exhaust will not effect you negativly what so ever. With n/a bigger is better.

bigger is not better for NA... its a fine line thing. with na back pressure makes low end torque but a free flowing large pipe makes more power in the higher RPM's some you kinda got to balance everything out.

my cousin should have listened to me when i told him that about his RSX header and full 3inch exhaust to help him losse what little torque he had below 4500 anyway

 

[98GS420A]

So would the Thermal Research & Development Classic Exhaust Systems be good for my vehicle or would I have to keep looking. If I have to keep looking, I might need a little help finding one that is a dual tip. Thanks if you find one for my vehicle. That was a good write up about back pressure

 

[flyinghighlm]

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This is similar to what I have, granted I am a turbo 1G and you are a n/t 2g I figured this might be something you would like.

Have you considered just buying your own muffler, finding a shop that does mandrel pipe bending and have them build it for you, alot cheaper that way if money is an issue.

 

[Xeiros]

Or you could just look on ebay for a NT exhaust, seeing as how they are very easy to come across on there. If it doesn't have a dual tip, just buy a muffler that does with the same size as the ebay kit, and have someone weld that on instead of the other muffler. I almost gurantee that you'll save money that way.

 

[LordZed]

bigger is not better for NA... its a fine line thing. with na back pressure makes low end torque but a free flowing large pipe makes more power in the higher RPM's some you kinda got to balance everything out.

my cousin should have listened to me when i told him that about his RSX header and full 3inch exhaust to help him losse what little torque he had below 4500 anyway

I humbly stand corrected.

 

[SRTthis]

I humbly stand corrected.

roots blowers work the same way... big reason i've stayed away from headers on my lightning. the stock manifolds flow quite well and headers flow so well you lose a 1-2 lbs of boost which results in a loss of torque down low and up top for that matter. but there is a point where you really can make power off them because you pushing so much in and cant get enought out...

so basicly exhaust size is a very dependent on your power and flow needs.

 

[Semprini]

I know Im digging...

I have the 3" ebay SS exhaust. I want to get a different muffler. Im looking at magnaflows line and have a question. Of course Im going with a 3" inlet, but does the out D matter if its a dual setup? This one has the 3" in and dual 2.5" out. I like some of their mufflers that already have dual tips but theyre all 2.25." Also, what will be the difference from the overall length

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[thekellbeast]

Just to clear this whole thing up, back pressure is not a good thing, ever. Nope, never. No engine (that I'm aware of) was ever designed to make more power because there was resistance to flowing its exhaust away from the head. The whole 'small exhaust/big exhaust' thing, is that smaller pipes are tuned to pull exhaust pulses away from the engine at low RPM's. Large exhaust systems are tuned to pull exhaust pulses away at high RPM's. Nobody really cares about off-boost performance in a turbo car, just how quickly it spools and making maximum power on boost. So for most people, the largest exhaust system possible is the best for a turbo car. So if you're going for low end power (in an NA car), you will want a smaller exhaust that's tuned to scavenge at low RPM's.

So what's scavenging? When one exhaust pulse goes down the exhaust runner. As it goes further away from the head, it creates vacuum between itself and the closed valve. Just as the pulse is reaching the collector, the valve is about to open again. Just when that vacuum is at its maximum. As it opens, the vacuum helps pull (scavenge) the exhaust out of the cylinder, and if there's any overlap, to pull the fresh fuel/air mixture into the cylinder.

What most people confuse, is that thinking the smaller, more restrictive piping is beneficial because it's restrictive. That's when they start spouting off about backpressure. The truth is that it's beneficial, simply because it's smaller vs. its length.

Understand? Good, great, grand, wonderful. Everyone on the bus. Don't ever use the word Backpressure again, or I'll send Bruce Lee's ghost after you.

And no smartasses better try to say anything about 2-stroke exhaust systems. Expansion pipes are a discussion for another day.

 

[thekellbeast]

Oh, and to reply to the original topic, I have a full 3" Megan Racing exhaust system. I ordered a Magnaflow 14221 (3" in, dual 2.5" out, 14" muffler body by 5x8 oval). It should look stock, and when it arrives (Tuesday) I'll install it and let everyone know how it sounds.

 

[01QuadDak]

I have the thermal on my car, and i love the sound. I run 3" turbo back, and it it not obnoxiously loud.
And to the "backpressure" topic......
You do not really loose power with a larger system, its just gets moved higher into the powerband.
One of the major exhaust companies did a study with the exact same car, with a stock system, a 2.5" version of their exhaust, and a 3" version of their exhaust.
The 2.5 moved the PEAK torque and hp quite a bit lower in the powerband, better for tooling around town, which the 3" offered few more ponies, but moved the PEAK higher as well as the average hp higher. The end result for N/A, bigger(to a point) makes more power, but it may not be really all that usable. But for turbo, you want those exhaust gasses out as quick as possible, they have spun the turbo, and now you want them to get outta there, as quick as possible, any backpressure there will SLOW your turbo down.

 

[Locke]

Wait, what? People are still spouting out arguments for back-pressure? I could have sworn that the whole back-pressure myth was dispelled about 40 years ago.

 

[Splitpi]

I know Im digging...

I have the 3" ebay SS exhaust. I want to get a different muffler. Im looking at magnaflows line and have a question. Of course Im going with a 3" inlet, but does the out D matter if its a dual setup? This one has the 3" in and dual 2.5" out. I like some of their mufflers that already have dual tips but theyre all 2.25." Also, what will be the difference from the overall length

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I have that exhaust on my car.

 

[dikdiamond]

I have that exhaust on my car.

How does it sound?

 

[Semprini]

I found that muffler for 81 shipped on ebay. It shouldnt be much at all to have welded on. I think Im going to order it up. What are your opinions on tips? tips or no tips, and if tips, what kind of tips?