08 Altima 3.5 Headers

[vflores]

After a few days searching and before I give up, I am asking everyone! Are there headers available for the 3.5 Altima Coupe? So far, the answer is no.

Thanks!!!

[el_blacky06]

so far there aint no headers available for the 3.5 coupe. its only available for the 2.5 sedan/coupe

[Hussain]

nope. no headers. stillen was going to make them for $600 but people wernt interested because its expensive and hard to install on the altima coupe.... SFR said they would be willing to make some for $1,000 and thats the last I heard. so you might want to contact SFR and see if they started prototyping yet.

[Ranga14]

Isn't this it?

http://www.speedforceracing.co...D=950

[RicerX]

I wouldn't buy those. Even if they are for the VQ Altima Coupe, there are no O2 sensor bungs at all (which you need unless you do a messy coverup wiring job or a terrible tie-wrap job), and you'd have to have them welded in, and you'd want to put in spacers at minimum on the bank 2 pair to attempt to avoid the SES light. (There are several other fabs out there to get around this, but I prefer having a place for my O2 sensors so they're not dangling in the engine bay somewhere.

That's a lot of money for something that's half-assed and pretty expensive to install. You're looking at being in the neighborhood of $2000 for these after installation, and for "as much as 15 hp from these bad boys"?

Buy a y-pipe and a good exhaust. The y-pipe actually gets 13 whp without sounding speculative and it costs 25% of the price of those headers.

I'm welcoming of rebuttals, but if you want the power and you're wanting to spend that kind of coin, hell, get the turbo kit they offer. There's a whole lot more bang in that buck.

[vflores]

Well.., thanks for the info, that way too much for any headers. The other possibility that they would be difficult to install is another turn off. Thanks for the info.

[sammyboy]

I was thinking about buying the STillen headers but installing them will cost a lot of money. Plus idk if it would pass inspection in NYS

[Hussain]

many people have installed them on the 2.5s themselves.... its the 3.5se that would be really hard because the engine is bigger and theirs not as much room plus theirs 2 headers as appose to the 2.5s only having 1 header.

[Ranga14]

I wouldn't buy those. Even if they are for the VQ Altima Coupe, there are no O2 sensor bungs at all (which you need unless you do a messy coverup wiring job or a terrible tie-wrap job), and you'd have to have them welded in, and you'd want to put in spacers at minimum on the bank 2 pair to attempt to avoid the SES light. (There are several other fabs out there to get around this, but I prefer having a place for my O2 sensors so they're not dangling in the engine bay somewhere.

That's a lot of money for something that's half-assed and pretty expensive to install. You're looking at being in the neighborhood of $2000 for these after installation, and for "as much as 15 hp from these bad boys"?

Buy a y-pipe and a good exhaust. The y-pipe actually gets 13 whp without sounding speculative and it costs 25% of the price of those headers.

I'm welcoming of rebuttals, but if you want the power and you're wanting to spend that kind of coin, hell, get the turbo kit they offer. There's a whole lot more bang in that buck.

Hmm, those headers actually come with their Turbo setup from what I read.

[RicerX]

Hopefully those pictured aren't the exact product you'll receive. Cause wth do you do with the sensors? You still need your ECU to operate correctly even if you turbo. Maybe the picture is of an early prototype.

As for getting headers to pass inspection - not going to happen. Whoever ends up making headers for the 3.5 (if it ever happens) will make them catless more than likely, bc that's what's going to cause the most gains. The 3.5s have 3 cats on them - one on each header and one on the y-pipe. Notice that racingline did not include a cat in their y-pipe. I guarantee you they would not be boasting a 15 hp gain if they included a cat - bc you'd basically be getting the same thing you already had.

There's a chance you can still pass inspection with racingline's y-pipe as you'll still have two cats (both monitored). I'd just get that and leave the others if your AC is a DD. If you're wanting a big boost of power and you have a 6MT, just save the money and turbo. The turbo kit can be had for $4K. If you're willing to spend $1K on headers, that shouldn't be a tall order to wait and turbo.

[smmehdiz]

would we run into clearance issues using headers from say an 05-06? the only differences im aware of motor wise between the 05 vq and the 07+ is the motor mounts and compression. idk i havent really looked too far into but

[RicerX]

It's not just the motor that you have to worry about - it's the fact that they're totally different cars. Engine placement relative to the firewall is different, therefore exhaust bends and tubing placement is different, which ultimately leads to the headers not meeting up to the rest of the exhaust piping.

Since this thread started, there's been some talk of Racingline making high-flow cats for the 3.5 AC. That is the way to go. You would be able to install those much more easily than the full headers, and the power gains really rely on the existence of the cats anyway.

You could try the headers from the 05 and custom fab everything, but honestly that would take a ton of work, a chunk of money, and all for what? less than 20hp? Doesn't sound very lucrative.

[smmehdiz]

yeah, like i said i hadnt really looked too far into it so what your saying makes total sense....i ordered the y pipe anyway. i guess we'll just have to wait and see