:: 94' Delsol Dual Exhaust?? ::

Hey i was just curious... How hard would it be to put dual exhaust on a del sol... I heard that for dual exhaust the other pipe would have to be cut into the frame... I kno my car isnt supposta have dual exhaust but i think it looks better... And if i have a body kit how do they form the kit around the muffler...

back pressure, back pressure, back pressure

What about back pressure... Is back pressure good or bad....

back pressure is bad...by adding a second muffler to your exhaust your just creating more back pressure. Why do you want dual exhaust anyways...looks tacky as hell on a car with a I4

Since you're only going for looks you could just buy a muffler and hang it there..

LOL...that's funny...

Backpressure is good for torque at low revs
Less backpressure is good for hp at high rpms

it wont make your car faster to just put a 3" pipe the whole way back, just like everything else its a balancing act.

Twin pipes do look pretty ghey on an I4 though

Ok I guess I don't get the backpressure thing, I mean I know when its good and bad an why. But why is adding a second muffler creating more backpressure? Hes adding another hole for the exuast to get out of, how could that restrict airflow more? And if it is as you say, why do high performance cars have dual exausts like corvettes?
gscivic7-
If dual exausts only create more backpressure (and by your description backpressure is bad), why wouldn't anyone create a single exaust system for a dual exaust car, but rather it usually works the other way around?

Buzz1167
Jon N

:eek7: *HAHA* Duals on a Del Sol *HAHA* :eek7: Oh shit that was good for a laugh.

<---Thinks about the back pressure

A NOTE TO BUZZ : Cars that have engines that are big enough (not I4s) to handle Duals (e.g come with Dual outs from the engine) work better because they have more exhaust to expell. I4, on the other hand, do not have that much exhaust being produced by the engine so air tends to flow back up the pipe, from the outside. Thus causing Back Pressure.

Just my :2cents:

I am also going to guess that adding a second muffler will reduce the effects and benfits of scavenging. That's probably part of the added backpressure right there.

N.A. car especially 4 bangers shouldn't have dual at all, u lose all ur torque, unless u have a high displacement engine

I have a 95 Del Sol VTEC model and got dual exhaust installed. It was easier than you think. All the muffler shop had to do was route the other pipe around the other side of the wheel well just like the stock one. To run you through how i did it, and how i personally think is the best way try this. I put DCsports ceramic headers (not required) on, then connecting straigh to that is an airmass high flow Cat, which is then welded to a magnaflow round straight through muffler (it sits right underneath you shift linkage). Then i got a Y-pipe welded to the end of the muffler. From there, one pipe went in the stock routing, and the other on the other side (above the suspension). It all comes out in two sets of beatiful bosal brospeed dual tips (2 1/4) for a quad look. The magnaflow muffler sounds great and performs too. Of course i am sure i have moore back pressure than a single pipe, but still less than stock. The look, sound, and compliments much outweigh the .2 or .3 back pressure difference from a single pipe.

Of course i am sure i have moore back pressure than a single pipe, but still less than stock. The look, sound, and compliments much outweigh the .2 or .3 back pressure difference from a single pipe.
This makes no sense, you won't have more back pressure with larger piping.
The magnaflow muffler sounds great and performs too.
Performs? You're LOSING power by having all these fat pipes sticking off your car. The larger-than-stock yet limited size of an aftermarket single exhaust lets the gasses expand in one direction, out of the muffler. With two huge pipes the gasses will just kind of "hang out" in them, and get sucked back into the combustion chamber instead of fresh air, making the engine run LESS efficiently and LOSE horsepower. Also, I've never heard a good-sounding dual exhaust on a 4 cylinder engine. They've all been loud and gargly pieces of crap, even "professionally" done (brand name mufflers/exhausts installed by muffler shops).

Just like huge spoilers looking good on Indycars because they serve a purpose, dual exhausts only look good on V6's+. Otherwise it's just tacky and teh gheynezz.

1 exhaust manifold, 1 exhaust pipe. most efficient design, sounds better, looks better, performs better. Most 600+ hp supras and other I6 cars I have seen have been single exhaust. You also have weight to think about. Unless you REALLY like the looks of it, there's no point. Dual exhaust, I4.. :greddy2:

I just thought about how funny it would be if some guy took his camaro, y-piped his exhaust, and had big quad tips.

I put DCsports ceramic headers (not required) on.... Of course i am sure i have moore back pressure than a single pipe, but still less than stock. The look, sound, and compliments much outweigh the .2 or .3 back pressure difference from a single pipe.

Okay, 2 points.

Point Number 1) You have a B16A motor, a 4 cylinder motor. You only have 1 exhaust manifold. This is what the header replaces. A V8 can have "headers" (2 headers). A V8 is essentually 2 4 cylinder motors back-to-back. This is why there are daul exhaust on a V8, because there are 2 headers!!! A a 4-banger can not have more than 1 header, as that requires more than 1 exhaust manifold. You have 1 header, not "headers." Now, you can see why a V8 has daul exhaust and a 4 bander does not. The V8 has a true dual exhaust, you del sol is duel tips, not a duel exhaust, it still is only one pipe and header out of the motor.

Point Number 2) The purpose of the bigger piping on a cat-back system is to free up the airflow, reducing the backpressure. Too much backpressure can mess things up, the gases get backed up, and that slows things down, and can create all sorts of problems. Shrinking the pipes will create backpressure, increasing the size will not. You made the piping bigger, which will not increase backpressure, but reliave it. However, the reason why the duel exhausts can mess things up is it will reduce the effects of scavenging. When you put on a good cat-back system, you free up the airflow, and increase the effects of scavenging. I am well-aware of how a "duel exhaust" is done on a honda, and as I said above, it's not true "duel. "The spilt is near the axel, and piping is run to the other side as well. Exhaust gases split at the piping y-junction, and then flow out the 2 spearate mufflers/tips. However, this split, etc...reduces scavenging, which....shocking....decreases performance. Efficent Scavenging is why those headers you buy like the DC Sports ones work to increase power, and when run with a good exhaust, it free's up more airflow. All the duel exhaust does is serve to defeat this purpose. Sure, you may think it "looks cool," but function wise it just slows things up; reducing scavenging and the power gains assoiated with the exhaust you just paid dearly for. I.E, you make think it looks good, but it serves no real purpose, performance wise. It just messes with things.

Sure, you may think it "looks cool," but function wise it just slows things up
A crystal clear definition of RICE
btw I've never seen a post by you being less than 2 paragraphs long :p

Ok, for all you people you have problems reading and understanding english, when i said that the looks, sound, etc.....outweigh the .2 to .3 backpressure difference from a single pipe, i was stating that i have .2 to .3 more PSI of backpressure than a single pipe aftermarket exhaust. ( due mainly to the Y-pipe and duals) Oh and as for "headers" you know what i was talking about. What we normal people do when we get out and socialize is use slang. The term "headers" comes from years of being around V8's and being used to the slang. It just comes out as headers rather than header when talking about I-4's. Don't try to correct me until you have the proper schooling to back up the bullshit. And i do plan on using a single pipe as soon as i put a turbo on my engine. Right now, my car is an everyday street car not a weekend car. Not yet.

Oh and by the way ricochet04, how can you sit there and call my dual del sol exhaust rice when in your pictures you whole muffler is showing! Not only is the whole thing sticking out from underneath the rear, it is doing the whole standard sideways rice trademark! Now come own don't point the finger until you check yourself. Lets have a little respect.

...btw I've never seen a post by you being less than 2 paragraphs long :p

I like to go in depth with my answers, lol. Helps make them informative. :biggrin:

Ok, for all you people you have problems reading and understanding english, when i said that the looks, sound, etc.....outweigh the .2 to .3 backpressure difference from a single pipe, i was stating that i have .2 to .3 more PSI of backpressure than a single pipe aftermarket exhaust. ( due mainly to the Y-pipe and duals) Oh and as for "headers" you know what i was talking about. What we normal people do when we get out and socialize is use slang. The term "headers" comes from years of being around V8's and being used to the slang. It just comes out as headers rather than header when talking about I-4's. Don't try to correct me until you have the proper schooling to back up the bullshit. And i do plan on using a single pipe as soon as i put a turbo on my engine. Right now, my car is an everyday street car not a weekend car. Not yet.

Okay, first off, don't come on here telling me I am full of bull-shit, I ment no disrespect, and did not call you "rice." Second, you do not know me, so don't assume I am ignorant or lack schooling, and don't have know any knowlegde. It is nice to know you plan on running a single pip with the turbo, thats good. As for the "headers" thing, you don't realize how many new people come on here and refer to it as that, thinking there really are "headers." You had 14 posts, so I assumed, based on the usage of the term and the post count, you fell into this catagory. Sorry if I was mistaken. Also, maybe where you are from, the term "headers" has become slang with imports due to muscle car exposer. Where I am at, I have never heard that slang uses. If you call it "headers" you will be corrected quickly and informed there is only 1 header on a I-4. You'd be shocked how many people don't realize this. You told Ricochet to show some respect. I ask you the same, don't go telling me I am full of bullshit and have no knowlegde. That is showing the same lack of respect you are complaining about. If you show me respect, I will be happy to show respect back. I am not here to start fights. I am here to discuss cars, help people learn, and to learn myself. Oh, and since I see you are new, I wantesd to say welcome to AF.

Oh and by the way ricochet04, how can you sit there and call my dual del sol exhaust rice when in your pictures you whole muffler is showing! Not only is the whole thing sticking out from underneath the rear, it is doing the whole standard sideways rice trademark! Now come own don't point the finger until you check yourself. Lets have a little respect.

the Apex N1 exhaust is one of the most efficient and best looking exhausts on the market. my only gripe is it's a little loud.

Oh and by the way ricochet04, how can you sit there and call my dual del sol exhaust rice when in your pictures you whole muffler is showing! Not only is the whole thing sticking out from underneath the rear, it is doing the whole standard sideways rice trademark! Now come own don't point the finger until you check yourself. Lets have a little respect.
I wasn't calling you a ricer, I was just saying that quote is a good definition of rice - "all looks no go"... btw my name isn't ricochet04

Before you start bashing my car, do realize I bought that exhaust for the go, not the show, unlike your useless bling bling dual exhaust.

I understand where you are comming from echoman. I feel the whole respect issue and feel that we all deserve it. I felt like i was getting desrespected and returned the favor. I just can't stand it when people try to tell me something when all they know is "word of mouth performance". But like you said, i don't know you and you don't know me, so no assumptions should've been made. I now extend my apologies. Truce. And ricochet, some times you should just watch what you say before you say it, i may offend someone. For me it was the term "rice" that did it. I work hard to uphold the image of honda's and other imports in a performance respect in a world surrounded by V8 muscle cars. Being called rice is something i don't hold to well. But i also extend my apologies to you too and ask the same. Oh and like the other guy said, i like to go in depth as you can tell to make sure the questioneer understands my responce fully. (as you can once again see :)).

Okay I apologize for you not being able to read, and am dually sorry for your lack of taste in automotive aesthetics. Truce?

Some people just can't be mature enough to accept an apology.

I now extend my apologies. Truce.

It's all good. Truce.