Headers on the 350Z, worth it?
#21
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Most headers produce fairly respectable mid range power. Peak HP gain is a hit or miss with the VQ. I dont care what brand you choose, the only difference is the durability and popularity of the name. More money wont result in more hp with headers. More money will usually result in a better quality of metal and a piece of mind when thinking about the long haul.
#22
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I would highly recommend going with the Forcefed headers. These headers are priced very low, and if you look at the collectors, welds and overall quality, the surpass any others on the market. As for the gains most dyno results show 8 to 12 hp. Check them out. There are a few sponsors on here that are selling these headers.
#23
psychedelic one
Originally Posted by kspec
but i read that doing NA on a 350z yield very minimal results. is this true?
i imagine going I/H/E should gain at least 10hp to the wheels at the very least?
i imagine going I/H/E should gain at least 10hp to the wheels at the very least?
These are only dyno numbers and can often not translate to usable power if the driver is not up to par. Without actually building my engine, or sliding into the dark side with non c.a.r.b. approved mods, I've come to the end of my hp quest at 254 rwhp. I think that's actually pretty damn quick, but I also see that I spent an arm and at least half a leg for around 25 rwhp... so... there's the rub. I'm happy, but the question is, can you be happy with these numbers.
#25
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I would go with a plenum spacer and a pop charger before investing in headers. If you dont mind the noise, your next best bet is some test pipes.
(Here comes the rasp argument garbage...)
(Here comes the rasp argument garbage...)
#27
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So would there be any noticeable gains with Nismo headers on my Z? I think that nismo's probably have to be the safest bet, especially since my other mods are nismo as well.
There are not any cons to doing this, are there?
I would probably go though the dealer with this mod, since I had my intake and exhaust dealer installed as well.
There are not any cons to doing this, are there?
I would probably go though the dealer with this mod, since I had my intake and exhaust dealer installed as well.
Last edited by JJ350; 12-05-2007 at 11:22 AM.
#28
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There has been mixed emotion about them. I honestly don't believe the short tube headers do much.
Take this idea for example: Some people say you need to get a reflash to extract the power out of headers. Some people say you could gain the same amount without the headers.
IDK I personally felt it was a rewarding install as I did it myself and enjoyed it. And yes, I would do it again.
Take this idea for example: Some people say you need to get a reflash to extract the power out of headers. Some people say you could gain the same amount without the headers.
IDK I personally felt it was a rewarding install as I did it myself and enjoyed it. And yes, I would do it again.
#29
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Get a dyno after the install. Good chance you'll be running lean if you have end to end bolt-ons.
I think headers are worthwhile if you can do it for under $1000 installed. I haven't seen anything to show a real substantial gain between the midrange and high end price offerings and they're all of the fairly same build qaulity.
Getting them coated is what really makes the difference. I saw saw surface temp drops of over 150 deg between my OE manifolds and coated headers.
I think headers are worthwhile if you can do it for under $1000 installed. I haven't seen anything to show a real substantial gain between the midrange and high end price offerings and they're all of the fairly same build qaulity.
Getting them coated is what really makes the difference. I saw saw surface temp drops of over 150 deg between my OE manifolds and coated headers.
#31
psychedelic one
Originally Posted by JJ350
So would there be any noticeable gains with Nismo headers on my Z? I think that nismo's probably have to be the safest bet, especially since my other mods are nismo as well.
There are not any cons to doing this, are there?
I would probably go though the dealer with this mod, since I had my intake and exhaust dealer installed as well.
There are not any cons to doing this, are there?
I would probably go though the dealer with this mod, since I had my intake and exhaust dealer installed as well.
#33
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Originally Posted by Alberto
Not worth it on an NA Z unless it has cams IMO AND a tune.
03' Bolt-ons I was trapping 107mph so I know what works and doesnt to get these cars moving...
03' Bolt-ons I was trapping 107mph so I know what works and doesnt to get these cars moving...
No cams and no tune and they are wortless....
#34
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Originally Posted by HondaKiller
Most headers produce fairly respectable mid range power. Peak HP gain is a hit or miss with the VQ. I dont care what brand you choose, the only difference is the durability and popularity of the name. More money wont result in more hp with headers. More money will usually result in a better quality of metal and a piece of mind when thinking about the long haul.
That being said, as I've said many times over, I would not bother unless I was doing cams and had some form of programmable mgmt. as well.
Last edited by Z1 Performance; 12-05-2007 at 01:40 PM.
#36
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So I should go for cams first? The thing is that I didn't want to mod my engine till my warranty is up, which is why I am trying to stick with bolt on's for now. Would cams negatively effect my warranty though?
It seems like if I do get headers though, than I should apparently have them coated somehow? Now how much extra would that cost...
Also whats with tunes? I am not quite familiar with tuning
It seems like if I do get headers though, than I should apparently have them coated somehow? Now how much extra would that cost...
Also whats with tunes? I am not quite familiar with tuning
#37
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Originally Posted by myG35zx
Cams (parts and labor) on the VQ is pricey - right? Is it worth the money then?
#38
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If you're gonna do cams, might as well do the head work too (porting, polishing, valves, springs, retainers, etc)... And if you're gonna do that, might as well do the lower end too (pistons, rings, rods, crank balancing, etc)... I guess you'd have a built engine after all that. :-)
#39
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Originally Posted by JJ350
Is am just wondering what kind of gains should be expected with headers on a Z like mine (06 auto, nismo CAI, nismo exhaust). Sound is quite important to me as well so I am also wondering how headers would effect me there, any vids or sounds would be very appreciated.
I basically have gathered that this mod is quite expensive and hard to install. I am thinking about nismo headers to go along with the rest of my setup.
I basically have gathered that this mod is quite expensive and hard to install. I am thinking about nismo headers to go along with the rest of my setup.
#40
My350z
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Originally Posted by gothchick
If you're gonna do cams, might as well do the head work too (porting, polishing, valves, springs, retainers, etc)... And if you're gonna do that, might as well do the lower end too (pistons, rings, rods, crank balancing, etc)... I guess you'd have a built engine after all that. :-)
and if you are going to do that, you might as well turbo it, and if you are going to do that, you might as well sleeve the block and build it, and if you are going to do that, might as well add some nitrous.....
does it ever stop??
how is your car erin??