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Hi
i have a 1999 honda civic dx with a d16y8 in it
i want to change my exhaust for a invidia n1 or skunk2 megapower but it says it only fit on a ex.. will it fit on mine?? I dont really know anythibg about cars
Without converting to a full EX exhaust setup, it won't
here's a layout of the 6thgen exhaust system:
Part number 8 and 17 (in the box) is the exhaust setup in the DX
Part number 9, 4, and 18 is the exhaust setup in the EX.
Biggest difference here, the DX exhaust has an exhaust manifold that has a 4-1 design (4 runners [pipes] that collect into a single outlet) with an integrated catalytic converter.
That said, the downpipe (part that connects just downstream of the manifold), is a single pipe that then connects to a long mid-pipe, then to the axle-back portion that has the muffler.
The EX exhaust manifold has a 4-2 design (4 runners [pipes] into 2 runners [pipes])
That said, the downpipe has a 2-1 design, that feeds into the cat, then into the midpipe, then into the axle-back portion with the muffler.
The axle-back portion may or may not be the same, but part number fitment says it only fits the EX (might be different muffler design, angle of the flange, etc.)
In order to use an exhaust made for an EX, you would have to swap out the manifold, downpipe, and cat, extend O2 sensor wires to reach the cat's new position, then bolt on the EX exhaust portion
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Re: 1999 civic exhaust upgraded info need help
Did you not read this?
Btw you won't see any power gains, it will just be shiny and loud, you'll probably even lose a bit of low end power
Originally Posted by xRiCeBoYx
In order to use an exhaust made for an EX, you would have to swap out the manifold, downpipe, and cat, extend O2 sensor wires to reach the cat's new position, then bolt on the EX exhaust portion
To be more straightforward, you have to buy an EX header, EX downpipe, and EX cat, on top of the EX exhaust system you're looking at. And the O2 sensor wire extensions
Sure, you may lose some low RPM band power. You may gain a little top end RPM band power. 1-3 horsepower loss down low, and 1-3 gain up high, no gain in the middle, realistically. If you're going for sound, then go for it. If you're not planning on doing anything to the engine (internals, not bolt-ons) or plan on going boost, go with 2.25" piping, at most. Anything more than that will cause you to lose more than it's worth. I ran 60mm (2.36") piping on my 2002 and that was more than plenty for when I was boosted.
