New Catback Straight Pipe Exhaust Lots of PICS !
#16
Lexus Test Driver
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You should probably look into adding a cross pipe somewhere near the front to middle there, it will help it scavenge better and make more torque/better effieciency. Here's an example from my car...
![](http://i7.photobucket.com/albums/y269/kyoso23/cars/exhaustcatdelete.jpg)
![](http://i7.photobucket.com/albums/y269/kyoso23/cars/exhaustcatdelete.jpg)
![](http://i7.photobucket.com/albums/y269/kyoso23/cars/exhasutback.jpg)
Last edited by kyoso23; 07-16-08 at 10:17 AM.
#17
Lexus Test Driver
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Pasted from carcraft.com
For any performance exhaust system, some type of crossover connecting the two sides of a dual exhaust system is important because it acts to balance the two banks of the engine. The common H-style crossover is good at balancing sound pulses between the two halves, but does little to promote scavenging because the exhaust gases tend to follow the path of least resistance, which is straight through each pipe rather than taking the 90-degree turn through the H-pipe into the other half of the system. In an X-pipe system, however, where the two sides of the system intersect, the gasses have no choice but to intermingle as they pass through the junction. This promotes improved scavenging effects by smoothing out uneven exhaust pulses from the engine’s firing order. It also helps quiet down the exhaust, resulting in a mellower, less raspy tone. According to Magnaflow, the faster acceleration of the gasses through an X-pipe causes them to flow in a linear fashion parallel to the walls of the tubing rather than tumbling. This “laminar” flowing gas is much quieter than tumbling gas, resulting in an exhaust tone up to 8 decibels quieter than a traditional H-pipe.
#18
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You guys are correct about the x-pipe. I was initially looking to install it but didn't know where to find one. The sound is something between the mix of an Escalade and an American big block muscle car. Do you know where I can find the x pipe can one be custom built to fit 2.25" and out to 2.5"
I did notice a slight hesitation (probably because of no back pressure created) but let me tell you on the highway wow, i can actually tell you the car breathes easier and this is without the air intake so looking forward to that.
I did notice a slight hesitation (probably because of no back pressure created) but let me tell you on the highway wow, i can actually tell you the car breathes easier and this is without the air intake so looking forward to that.
#19
Lexus Test Driver
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I noticed a huge difference. The stock system is sooo restrictive. The sound of mine is hard to describe. Somewhere between a G35C and a quieter version of an Aston Martin V8.
#21
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Here is the sound , the sputtering in the beginning, is actually a lawnmower .
http://www.youtube.com/watch?v=M3Kp9-Sb8x4
http://www.youtube.com/watch?v=M3Kp9-Sb8x4
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