Which is the best exhaust for the $?
02-19-2004 | 11:38 AM
#26
WHAT.... YEAH... OK!
Joined: Aug 2003
Posts: 931
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From: Long Island City, NY
Originally posted by rotarygod
Trust me, we will see 300hp naturally aspirated Renesis engines out there in the near future. It can be done. It just takes time to figure out.
How can you say that the rotary is poor for aftermarket tuning when all of the past rotaries would get much larger gains per dollar spent than their piston counterparts and I'm not referring to turbocharged models? The RX-8 is so new and no one is patient enough to wait for development. Give it time. The power will climb when we figure out where Mazda left us room to improve. Every engine has is. This one is just better to begin with.
Trust me, we will see 300hp naturally aspirated Renesis engines out there in the near future. It can be done. It just takes time to figure out.
How can you say that the rotary is poor for aftermarket tuning when all of the past rotaries would get much larger gains per dollar spent than their piston counterparts and I'm not referring to turbocharged models? The RX-8 is so new and no one is patient enough to wait for development. Give it time. The power will climb when we figure out where Mazda left us room to improve. Every engine has is. This one is just better to begin with.
02-19-2004 | 02:35 PM
#27
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Joined: Apr 2003
Posts: 9,134
Likes: 25
From: Houston
Exhaust and intake aer only going to get you small gains for the money. Tuning is whee the performance is at with this car. Get a retuned (preferrably tunable) ecu before you do anything to the car. There is no point to making the engine breath better if the ecu can't properly compensate for it. It does a lousy job now. After the ecu upgrade then get the exhaust and intake. We're still waiting for a good ignition system to come out as well. Yaw has one in the works. Another good mod that is feelable is a lightweight flywheel. This was one of the best mods that I ever did to my RX-7's. Later on down the line as people progress with porting we'll see more gains.
02-19-2004 | 03:17 PM
#28
Originally posted by rotarygod
We're still waiting for a good ignition system to come out as well. Yaw has one in the works.
We're still waiting for a good ignition system to come out as well. Yaw has one in the works.
The AEM C2DI with MSD-style DIS coils is nearly plug and play.
You can get it here for $350. Then four of these at $46 a piece and you are there.
You could also just go with a two channel setup from MSD (like I did) or the 2 channel version of the AEM since the trailing plugs are of minimal interest and the screwed-up firing order thing is going to cause headaches.
However, the whole issue is probably moot since the gains are minimal below 7500 where the stock coils just start to run out of dwell.
02-19-2004 | 04:21 PM
#29
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Joined: Oct 2003
Posts: 151
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From: Middle of Wisconsin
Well JeupRX-8.....
SNIP>>>>>>>>
My friend's 350z has gained 30+ HP on an intake & exhaust for god's sake!
END of snip>>>>>>>>>>>>
I would say you and your friend need to be a bit more skeptical. We do snowmobiles up here in WI. You buy a sled (say a 600) and do some wonderful mods to it, each claiming 5 HP here, 10 hp there and when you are done you add up the claimed increases making your wiz sled more powerful than a 900. The problem with all this is 'gol darn it, is that stock 700 sleds are kicking your *ss! Maybe you ended up being a bit faster than other 600s, but you certainly didn't get the increases claimed.
The moral? Until you have verified claims for yourself in a reliable way (not "man, it sure is/sounds/feels faster!!!), don't believe everything you hear.
Tom
SNIP>>>>>>>>
My friend's 350z has gained 30+ HP on an intake & exhaust for god's sake!
END of snip>>>>>>>>>>>>
I would say you and your friend need to be a bit more skeptical. We do snowmobiles up here in WI. You buy a sled (say a 600) and do some wonderful mods to it, each claiming 5 HP here, 10 hp there and when you are done you add up the claimed increases making your wiz sled more powerful than a 900. The problem with all this is 'gol darn it, is that stock 700 sleds are kicking your *ss! Maybe you ended up being a bit faster than other 600s, but you certainly didn't get the increases claimed.
The moral? Until you have verified claims for yourself in a reliable way (not "man, it sure is/sounds/feels faster!!!), don't believe everything you hear.
Tom
02-19-2004 | 05:00 PM
#30
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Joined: Apr 2003
Posts: 9,134
Likes: 25
From: Houston
Originally posted by Maniac
You can already do ignition.
The AEM C2DI with MSD-style DIS coils is nearly plug and play.
You can get it here for $350. Then four of these at $46 a piece and you are there.
You could also just go with a two channel setup from MSD (like I did) or the 2 channel version of the AEM since the trailing plugs are of minimal interest and the screwed-up firing order thing is going to cause headaches.
However, the whole issue is probably moot since the gains are minimal below 7500 where the stock coils just start to run out of dwell.
You can already do ignition.
The AEM C2DI with MSD-style DIS coils is nearly plug and play.
You can get it here for $350. Then four of these at $46 a piece and you are there.
You could also just go with a two channel setup from MSD (like I did) or the 2 channel version of the AEM since the trailing plugs are of minimal interest and the screwed-up firing order thing is going to cause headaches.
However, the whole issue is probably moot since the gains are minimal below 7500 where the stock coils just start to run out of dwell.
02-19-2004 | 09:22 PM
#32
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Posts: n/a
moral of the story is that I am going to pass on the exhaust, intake, midpipe for now and hope that they come out with mods for the lonely auotmatic. I will key on appearance and maybee in the fall I will go towards modding the performance.
Troy J.
Troy J.
02-20-2004 | 06:21 PM
#33
100% Italian
Joined: Jul 2003
Posts: 9,422
Likes: 0
From: orange,ca
Originally posted by JeupRX-8
moral of the story is that I am going to pass on the exhaust, intake, midpipe for now and hope that they come out with mods for the lonely auotmatic. I will key on appearance and maybee in the fall I will go towards modding the performance.
Troy J.
moral of the story is that I am going to pass on the exhaust, intake, midpipe for now and hope that they come out with mods for the lonely auotmatic. I will key on appearance and maybee in the fall I will go towards modding the performance.
Troy J.
good plan:D
02-27-2004 | 12:25 PM
#35
WHAT.... YEAH... OK!
Joined: Aug 2003
Posts: 931
Likes: 0
From: Long Island City, NY
Originally posted by JeupRX-8
moral of the story is that I am going to pass on the exhaust, intake, midpipe for now and hope that they come out with mods for the lonely auotmatic. I will key on appearance and maybee in the fall I will go towards modding the performance.
Troy J.
moral of the story is that I am going to pass on the exhaust, intake, midpipe for now and hope that they come out with mods for the lonely auotmatic. I will key on appearance and maybee in the fall I will go towards modding the performance.
Troy J.
wow u seem really bitter.. if i had this car at 18 i wuda been happy with it stock damit!
as for 30HP on a 350z w/ intake exhaust i wanna see that.
i have seen many 350z claim this and then get spanked by stock STis.
man enjoy the car for a year more things will come give it time. or trade the car get a civic hatch adn mod the hell outta it ive seen some fast hatchs around here that would blow the doors off 350z/Evo and even STi
02-27-2004 | 02:32 PM
#36
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Joined: Apr 2003
Posts: 9,134
Likes: 25
From: Houston
Since my old 2nd gen RX-7 nonturbo could get 30 wheel horsepower out of a nice exhaust, it is plausible that the 350Z could too. My RX-7 began life with only 146hp. 30 more to the wheels is downright impressive. We're talking about damn near a 40% increase in total power from just an exhaust!
The 350Z has over 100 more hp than my RX-7 did. Unlike the Renesis the Z's engine does not have any siamsed exhaust ports to mess up the exhaust tuning. Neither did the previous rotaries. The Z has the typical crappy exhaust manifolds so typical on most cars. By replacing them with a decent set of headers and a nice free flowing exhaust and better intake, 30 hp seems attainable.
A stock STI is a much faster car than a stock Z. It will take more than 30 hp more in the Z to be the STI's equal.
The 350Z has over 100 more hp than my RX-7 did. Unlike the Renesis the Z's engine does not have any siamsed exhaust ports to mess up the exhaust tuning. Neither did the previous rotaries. The Z has the typical crappy exhaust manifolds so typical on most cars. By replacing them with a decent set of headers and a nice free flowing exhaust and better intake, 30 hp seems attainable.
A stock STI is a much faster car than a stock Z. It will take more than 30 hp more in the Z to be the STI's equal.
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