apexi dual n1 exhaust
#28
#FakeCarEnthusaist
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If I were you, I would have dump the cat and got a presilencer and 2.5" dp from RB.
Last edited by Brody8877; 09-04-07 at 12:41 PM.
#29
Cell Broadband Engine
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I use to have the racing beat cat-back and ditched it for the dual n1's. To me the apexis give it more of a aggressive look, and it sounds amazing. The racing beats were more of a higher pitched exhaust, the apexi's are more of a deeper pitch. Just my .02
#31
Red and Gold
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I've got apexi n1 single exhaust. I've ran Bonez catless, Bonez Hiflo cat, and I am currently running RB headers with a cat welded in. The bonez pipes were louder, but had a really deep tone. The RB headers, even with the cat sounds similar, but it's at a much higher octave. I think you'll be happy with the Bonez and Apexi setup. I was thinking about switching to dual n1's, but after looking at some of the pics, my single n1 tip doesn't come out as far. I prefer not to have my exhaust tips stick out that much. I like how the modified dual n1's look, they sit just about the same as the single n1.
#33
DGRRX
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Oh, one more thing. My tip of the muffler doesn't protrude as much as the others shown in this thread. Not by half, and it sits up nice and tight to the bumper. Interesting. Are some of these systems 'N1 style' or true Apexi N1?
#36
Blazin' 87 N/A
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my exhaust are real Apexi dual N1's. i had my clutch replaced and the guy that did the job did not put them back in the right place. i have just been too lazy to put them back. i happen to like how far the exhaust protrudes it prevents my bumper from turning black. i have seen pics of cars at shows in cali and the look really close to mine. just wondreing if any one with this set up has had clearence issues??
#39
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my shop told me to get the 3" rb dp because its better for turbo. im probably gonna have them connect the 3" dp to the 3" bonez cat and they said theyre gonna cut a part of the cat or weld it to the 2.5" apexi y pipe. they said they would take care of it for me. a friend of mine said because im going from 3" to 2.5", that i would lose power....
#40
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Don't have them weld the pipes together. Have them weld in a reducer and use flanges! Otherwise you'll have one long exhuast pipe and if you ever change your mind in the future, you'll have to hack it up.
#42
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Not that much. Most of your power loss is coming from the cat. Ideally you want to have 3" all the way with nothing inbetween including a y-pipe, resonators, and cats. However, technology these days have compensated for such things.
#43
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A single exhaust normally gains some power and noise, while a dual reduces some power and noise. It depends on the particular situation though.
Mine are Apexi brand N1 mufflers. The differences in length are probably due to people like me who have the mufflers mounted on a custom pipe rather than the pre-made Apexi catback.
Yes they do make duals. The FD dual looks like the link below, while the FC dual is separated like the stock dual mufflers.
http://www.apexi-usa.com/product_exh...=180&pageNum=1
Mine are Apexi brand N1 mufflers. The differences in length are probably due to people like me who have the mufflers mounted on a custom pipe rather than the pre-made Apexi catback.
Yes they do make duals. The FD dual looks like the link below, while the FC dual is separated like the stock dual mufflers.
http://www.apexi-usa.com/product_exh...=180&pageNum=1
#44
The Dual N-1 achieves greater power than the single N-1 because federal regulations prevent the single N-1 piping diameter from being excessively big. This means that the dual pipe design of the Dual N-1 flows more volume of exhaust than a single pipe could while retaining more mid range torque at same peak HP. As with the single N-1 the Dual N-1 canisters and tip are constructed of a SUS 304 polished stainless steel while piping is treated to a titanium particle based high temperature paint
If you go with the RB DP you might not need the midpipe because the RB DP is LONG.
#46
Rotorhead
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http://www.evil-photographer.com/cars/Mazda/DG3/DG3.htm
http://www.teamspencer.com/2005/
http://www.improvedtouring.com/images/ITS/
http://www.starmazda.com/
http://mrec.rotary.net.nz/millen/millen.htm
Last edited by Evil Aviator; 09-06-07 at 02:17 AM.
#47
Blazin' 87 N/A
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i had talked to a few people and they all said for a pure flow a single exit exhaust with the straightest possible piping is the best was to make HP. i went with the dual N1's cause well they look f'n sick!!! and they are loud!! if you want performance go single if you want style go dual!!! just my$.02
#48
DGRRX
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Yes they do make duals. The FD dual looks like the link below, while the FC dual is separated like the stock dual mufflers.
http://www.apexi-usa.com/product_exh...=180&pageNum=1
#49
Evil: but the racing cars want to save as much weight as possible so they compromise and go with the single exhaust. A lot of racecars also go with full FG bodies but it doesn't mean the stock bodies hinder performance.
#50
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The Apexi advertisement is very misleading. If you want to try a reality check, search the internet for rotary-powered race cars (real race cars that win the big races, not show cars or drift cars), and see how many of them have dual exhaust.
http://www.evil-photographer.com/cars/Mazda/DG3/DG3.htm
http://www.teamspencer.com/2005/
http://www.improvedtouring.com/images/ITS/
http://www.starmazda.com/
http://mrec.rotary.net.nz/millen/millen.htm
http://www.evil-photographer.com/cars/Mazda/DG3/DG3.htm
http://www.teamspencer.com/2005/
http://www.improvedtouring.com/images/ITS/
http://www.starmazda.com/
http://mrec.rotary.net.nz/millen/millen.htm
I always thought that a single free flowing pipe would be much better than a Y-pipe. I don't know; in my opinion, a Y-pipe wouldn't make flow any better, even if it does add more volume. A single will be the same diameter and then go open air, while a dual will go one diameter, then broken down into two diameters (added together yeilds more volume), then open air.