i found a really good deal on an apex world sport 2 catback and it says that its around 85 db's, now to me that doesnt sound to loud and thats what i want with the way the cops are in my area. but is 85 db's loud? other that a system in my car its stock so i dont think the exhaust will draw to much attention to me. sorry for the long post but what do ya think?

 

ws2 sound good they are usaually not that loud

 

why would you buy a catback for a completely stock accord? your just losing performance.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wyotecher-4-life &raquo;</TD></TR><TR><TD CLASS="quote">why would you buy a catback for a completely stock accord? your just losing performance.</TD></TR></TABLE>


el oh el.

wrongo..

Exhaust, header and intake mods most people beginning do, and how do you figure that freeing up a restriction that you're going to be loosing performace.

I have the greddy evo 2 on my car, and i love it. it has a nice grumble and resembles nothing of a fart can. No rattles or raspyness.

 

nope. It may be something that nobody wants to hear but you are actualy losing performance in a naturaly aspirated INTERNALLY STOCK engine, especialy a low compression vehicle such as an accord when you add a larger exaust that that engine was not designed to opperate with. you see air in motion has enertia and a properly tuned exaust uses this to its advantage. a properly tuned exaust for a naturaly aspirated engine will generate what is called the "scavanging effect" which is actualy the companion sylinders working together to draw the exaust from the other cylinders out of their cylinder when the exaust valve oppens even before the piston starts to drive the burnt gasses out. this means the engine works smarter not harded to create power. when you replace the tuned stock exaust off a COMPLETELY STOCK N/A ENGINE you also remove the necesary factor from the equasion which is backpressure. without backpressure this affect will not happen and you have just sacrificed performance for a louder exaust.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wyotecher-4-life &raquo;</TD></TR><TR><TD CLASS="quote">nope. It may be something that nobody wants to hear but you are actualy losing performance in a naturaly aspirated INTERNALLY STOCK engine, especialy a low compression vehicle such as an accord when you add a larger exaust that that engine was not designed to opperate with. you see air in motion has enertia and a properly tuned exaust uses this to its advantage. a properly tuned exaust for a naturaly aspirated engine will generate what is called the "scavanging effect" which is actualy the companion sylinders working together to draw the exaust from the other cylinders out of their cylinder when the exaust valve oppens even before the piston starts to drive the burnt gasses out. this means the engine works smarter not harded to create power. when you replace the tuned stock exaust off a COMPLETELY STOCK N/A ENGINE you also remove the necesary factor from the equasion which is backpressure. without backpressure this affect will not happen and you have just sacrificed performance for a louder exaust.</TD></TR></TABLE>

LOLWUT.

Okay, so please explain why you add more air, and let it breath (bigger exhaust), that you gain performance and usually better gas mileage. If you're upgrading the exhaust to like 4 inch piping then yeah you're going to have negitive effects, but uhh last time i checked these exhaust systems do more good than harm

 

and last time i chack apexi is a very reputable company that tunes its products to specified vehicle. ppeople have been talking about backpresssure but what they forget is why do cars with exhaust systems have more hp than factory? and why do we put exhausts on with out building high compression motors. also factory tuned exhaust systems are tuned for two things quietness and emissions. i forgot to mention it is the headers/ex manifold that does the scavaging

 

Exhaust manifolds are generally simple cast iron units which collect engine exhaust and deliver it to the exhaust pipe. For many engines after market high performance exhaust headers (also known as extractors in Australia) are available. These headers consist of individual primary tubes for each cylinder, which then usually converege into one tube called a collector. Headers that do not have collectors are called zoomie headers, and are used exclusively on race cars.

The goal of performance exhaust headers is mainly to decrease flow resistance (also know as back pressure), and to increase the volumetric efficiency of an engine, resulting in a gain in power output. The processes occurring can be explained by the gas laws, specifically the ideal gas law and the combined gas law.

It is a common <U>myth</U> among drag racers and motor-enthusiasts that not enough back pressure in the exhaust will cause a loss of torque. This myth stems from the phenomena associated with exhaust scavenging. A diminished scavenging effect can result from lower velocity exhaust flow when using headers with large primary tubes. Most enthusiasts incorrectly conclude that their restrictive OEM exhaust provided more torque because of the back pressure it creates.


i guess you should get your money back from wyotech

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wyotecher-4-life &raquo;</TD></TR><TR><TD CLASS="quote">nope. It may be something that nobody wants to hear but you are actualy losing performance in a naturaly aspirated INTERNALLY STOCK engine, especialy a low compression vehicle such as an accord when you add a larger exaust that that engine was not designed to opperate with. you see air in motion has enertia and a properly tuned exaust uses this to its advantage. a properly tuned exaust for a naturaly aspirated engine will generate what is called the "scavanging effect" which is actualy the companion sylinders working together to draw the exaust from the other cylinders out of their cylinder when the exaust valve oppens even before the piston starts to drive the burnt gasses out. this means the engine works smarter not harded to create power. when you replace the tuned stock exaust off a COMPLETELY STOCK N/A ENGINE you also remove the necesary factor from the equasion which is backpressure. without backpressure this affect will not happen and you have just sacrificed performance for a louder exaust.</TD></TR></TABLE>

ur full of crap....... I gained 32 crank hp just by swapping out the stock headers for some aftermarket ones on my CL type S......the rest of the exhaust is already good enough that the only gains you will see are 1-2 hp.........

 

y would a PERFORMANCE exhaust loose you horsepower and tq? apexi is a well known brand so im thinking that it can only help, and after watching some videos of the ws 2 on youtube i went and orderd it because it is a really nice sounding exaust. it was only $450 with shipping. comparing to $600 on almost every other aftermarket site online

 

depends upon engine setup the j30a looses low to mid range torque when you upgrade the exhaust but you gain high end HP.....

J30a has small intake valves and exhaust valves and this is why that happens with that engine

exhaust has to be tuned to the engine, just like the intake........

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wyotecher-4-life &raquo;</TD></TR><TR><TD CLASS="quote">why would you buy a catback for a completely stock accord? your just losing performance.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wyotecher-4-life &raquo;</TD></TR><TR><TD CLASS="quote">nope. It may be something that nobody wants to hear but you are actualy losing performance in a naturaly aspirated INTERNALLY STOCK engine, especialy a low compression vehicle such as an accord when you add a larger exaust that that engine was not designed to opperate with. you see air in motion has enertia and a properly tuned exaust uses this to its advantage. a properly tuned exaust for a naturaly aspirated engine will generate what is called the "scavanging effect" which is actualy the companion sylinders working together to draw the exaust from the other cylinders out of their cylinder when the exaust valve oppens even before the piston starts to drive the burnt gasses out. this means the engine works smarter not harded to create power. when you replace the tuned stock exaust off a COMPLETELY STOCK N/A ENGINE you also remove the necesary factor from the equasion which is backpressure. without backpressure this affect will not happen and you have just sacrificed performance for a louder exaust.</TD></TR></TABLE>

Mr. Wyotecher4life, what you've just said is one of the most insanely idiotic things I have ever heard. At no point in your rambling, incoherent response were you even close to anything that could be considered a rational thought. Everyone in this room is now dumber for having listened to it. I award you no points, and may God have mercy on your soul.

Not only do you not have any idea what you're talking about, but you also use the grammar and spelling of a 3rd grader.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hurleyint &raquo;</TD></TR><TR><TD CLASS="quote">
Mr. Wyotecher4life, what you've just said is one of the most insanely idiotic things I have ever heard. At no point in your rambling, incoherent response were you even close to anything that could be considered a rational thought. Everyone in this room is now dumber for having listened to it. I award you no points, and may God have mercy on your soul.

Not only do you not have any idea what you're talking about, but you also use the grammar and spelling of a 3rd grader.
</TD></TR></TABLE>

x2

Talk about giving wyotech a bad name. Specially if this is any indication of what is coming out of the classes. Sounds like his rambling was taken strait from some 1950's drag racers notes.

Here is your scavenging effect in relation to a modern engine exhaust system.
Try-Y headers, the primary tubes are paired in a 4-2-1l formation. This increases the cylinder scavenging effect and improves engine breathing by utilizing the exhaust velocity of one cylinder to help the exhaust velocity of another. Therefore any exhaust tubing after the headers is just a restriction. Or is there some magical secondary scavenging done past the catalytic converter that you can show us Wyotecher-4-life?

 

WORD LIFE

 

remind me not to goto wyotech.