dual exhaust
08-22-09, 10:07 AM
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dual exhaust
from what i hurd from some guy on the street with a 7 he said that dual exhuast takes away horse power. and a single exhuast is better. is that true
i dont really think it would take away horse power but i dunno
i dont really think it would take away horse power but i dunno
08-29-09, 12:16 AM
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a true dual adds more top end power over single. if your looking to do this you need the racing beat road race headers. i read on here it adds about 40-50 horsepower but who knows for sure.
08-29-09, 10:16 AM
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Exhaust tuning is quite complicated and greatly depends on the rest of the engine. The RB true dual system is great, but that's not to say it is the be all and end all of exhaust systems. And certainly, it is wrong to say that a true dual adds more top end over a single.
08-29-09, 11:33 AM
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oh hell no its not the be all, end all. i would much rather convert to a single then the true dual anyday but of course thats my opinion. you are 100% right about everything you said, i was just giving some input in what i read and thought was true.
08-29-09, 06:06 PM
#7
My FC has dual exhausts. I think most FCs have dual exhausts. I prefer the look of dual exhausts.
On the other hand, FDs tend to have single exhausts. I never knew why until I looked underneath a 3rd Gen last week at 7StockNorth. The gas tank only has room on one side for a muffler. So if you want dual exhausts on an FD, you'll have to modify the gas tank first.
But I don't think it matters if you have two pipes or one, as long as it moves the proper amount of air.
On the other hand, FDs tend to have single exhausts. I never knew why until I looked underneath a 3rd Gen last week at 7StockNorth. The gas tank only has room on one side for a muffler. So if you want dual exhausts on an FD, you'll have to modify the gas tank first.
But I don't think it matters if you have two pipes or one, as long as it moves the proper amount of air.
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08-30-09, 01:38 AM
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I would do a single exhaust conversion for the weight savings, if your running NA on stock ports you are going to need some back pressure left in the system so you dont lose what low end torque you have.
08-30-09, 10:23 AM
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The reason Mazda used a dual exhaust was to maintain the flow while keeping the noise under control. Consequently, most single exhausts are stupid loud or flow worse then an equivalent dual exhaust.
Also, with the extra cutout in the bumper, it looks like the car has lost a muffler.
Also, with the extra cutout in the bumper, it looks like the car has lost a muffler.
08-31-09, 02:45 PM
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what type of intake you have on there? i have a cold air coming for mine its for a 90-93 ford escourt but i think its going to work. post some pics of your intake so i can get an idea
08-31-09, 10:54 PM
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if you go to my profile and look in the album theres a picture of my engine, its not the same filter i have on there now but its really similar, the picture is from a few months ago
11-28-09, 06:04 PM
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The reason Mazda used a dual exhaust was to maintain the flow while keeping the noise under control. Consequently, most single exhausts are stupid loud or flow worse then an equivalent dual exhaust.
Also, with the extra cutout in the bumper, it looks like the car has lost a muffler.
Also, with the extra cutout in the bumper, it looks like the car has lost a muffler.
11-29-09, 10:01 AM
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Yes, I'm sure. See the RX-7 books by Yamaguchi.
The Y pipe is not a restriction at all.
A single stock sized pipe? That's like less then 2". It would be a massive choke point.
The Y pipe is not a restriction at all.
A single stock sized pipe? That's like less then 2". It would be a massive choke point.
11-30-09, 11:08 AM
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on an NA engine, you might want to consider exhaust with exhaust scavenging, or anti reversion design built in to it.
this basically means that the exhaust is tuned to where the previous pulse of exhaust has the momentum to kind of "pull" the currently fired exhaust out the engine, GREATLY increasing top end without sacrificing bottom end.
this sort of thing is designed into the header and midpipe. cat back you cant really do that stuff.
"most" long tube headers have this factored in. but make sure you read up on the brand to see if they are legit in their claims.
on turbos though, it doesnt really matter...bigger is better. 3 inch or go home you know
this basically means that the exhaust is tuned to where the previous pulse of exhaust has the momentum to kind of "pull" the currently fired exhaust out the engine, GREATLY increasing top end without sacrificing bottom end.
this sort of thing is designed into the header and midpipe. cat back you cant really do that stuff.
"most" long tube headers have this factored in. but make sure you read up on the brand to see if they are legit in their claims.
on turbos though, it doesnt really matter...bigger is better. 3 inch or go home you know
