straight pipe all the way back?
#1
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straight pipe all the way back?
would it really matter if i do straight pipe all the way back since im in a 250 or should i add the x pipe for more torque im assuming?
update on page 2!
update on page 2!
Last edited by plusone; 05-25-09 at 10:22 PM.
#2
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Well, it'll matter as far as failing emissions if they do a visual for cats...and it'll probably matter for changing the sound... but it's certainly not worth it for power gains, especially on a 250.
#3
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well im not worry about emissions. and i know power gains won't be crazy but just wondering if some back pressure would be better then no back pressure. This would be on a true dual set up of course.
#4
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Here's a good explanation of the issue-
http://www.thumpertalk.com/forum/sho...d.php?t=659727
#7
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It's a myth that a car needs "back pressure"- what it needs is exhaust velocity
Here's a good explanation of the issue-
http://www.thumpertalk.com/forum/sho...d.php?t=659727
Here's a good explanation of the issue-
http://www.thumpertalk.com/forum/sho...d.php?t=659727
AFA the X pipe - I would do it. It will help mid-range torque noticeably even if the peak numbers don't show a big difference.
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#8
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I'd still like to see the Burns Y-Pipe to single 2.75-3" exhaust to finish. I was going to give it a shot but I'm already on my third exhaust not and am not spending any more $$$$ on exhaust. Some one should pick up some good gains because V6 motors don't have the best exhaust velocity, just look at the headders that never worked out.
#10
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I'd still like to see the Burns Y-Pipe to single 2.75-3" exhaust to finish. I was going to give it a shot but I'm already on my third exhaust not and am not spending any more $$$$ on exhaust. Some one should pick up some good gains because V6 motors don't have the best exhaust velocity, just look at the headders that never worked out.
#11
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Well with V8's you always have at 2 pistons firing so get scavaging. V6 is not in the same boat. One piston fires at a time so headders make no differance. This is per head (bank) of course. So just having a way to help velocity from scavaing from the other head would help gains some. I always thought a Y-Pipe would make a better diff. on V6's just because the velocity just isn't their and keeping it all in the same pipe would help keep exhaust temps up which also keeps velocity up.
With an X-pipe your cooling the exhaust more than you would with a Y-pipe setup.
With an X-pipe your cooling the exhaust more than you would with a Y-pipe setup.
#15
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It won't really matter. The difference between an axle-back and a full true dual exhaust even on an IS350 is like 5 horsepower.
Well, it'll matter as far as failing emissions if they do a visual for cats...and it'll probably matter for changing the sound... but it's certainly not worth it for power gains, especially on a 250.
Well, it'll matter as far as failing emissions if they do a visual for cats...and it'll probably matter for changing the sound... but it's certainly not worth it for power gains, especially on a 250.