I would pass on slapping the logo on the video. Just credit them in the desc. or the title. I think AAM will keep their watermark for themselves.

Also, on another note:

Khoi, I'm sure it's part of what is considered for the midpipe, but maybe you can make a solution that will work for your test pipe users. As you've heard from my video, it can be pretty damn raspy. I don't mind drone all that much (and because it doesn't affect anyone outside the car) but the rasp at 3000 is a bit much for too long.

The logo looks really good on the videos too :(

...Alright I will upload without.

Thanks 370zpurist

you are free to make your own videos without our watermarks as many have done before. I do appreciate the consideration though! just make sure you post it as as I love listening to all sound clips as good or bad as they might be haha

I just listened in on your other clips now and it sounds pretty intense off throttle and right in between WOT shifts

I'm actually pushing for AAM to make resonated test pipes at the moment becuase it just doesn't seem you can get rid of the rasp/drone no matter how good of a catback you have

over the weekend I met with a few 370z guys, one who had FI LTH's with an ARK Grip catback. as good as it sounded it still has the off throttle hiss and rasp at a certain RPM range. As you know ARK Grip's are well resonated with decent size resonators, big mufflers at the end, as well as resonator tanks on their mufflers and even with LTH's you still get in the inherent hiss/rasp. I'm starting to believe it's just the nature of of the VQ37HR's

It's funny because I had this same conversation with our engineer and he said he has this same issue with his 335i, where there are certain RPM range with drone/rasp even with his car and that adding these resonator tanks, depending on the location and size only mitigates and changes the range which the rasp kicks in. With these resonators they can only capture a certain frequency (given the RPM) but there's no definite 100% solution, especially when upgrading to a bigger diameter, wanting the extra noise, and completely trying to avoid the rasp/drone. Really is a tough challenge

A lot of the rasp/drone these motors are getting are from deleting of the stock cats. As many of the 370z user track their cars, adding HFCs in replacement probably isn't the best of ideas as they'll blow out shortly. I personally think the best of both worlds comes in with resonated test pipes that's why I'm trying to push the idea of resonated test pipes to go into production

I actually already did something pretty similar to this. AAM short tails, upgraded y-pipe, and resonators deleted on the mid-pipe.

370z straight exhaust with AAM short tails - YouTube
370z AAM Shorts tails and custom straight exhaust start up - YouTube
http://www.youtube.com/watch?v=kuEPNcb3uj8&feature=plcp

Yup posted your videos a few pages back. Sounds really good but on stock cats that makes quite a difference :tup:

Ah, so you're bmxjacob. Yeah, I was looking at your videos before I thought about doing the test pipe ypipe combo myself.

It seems to me the vq37 just has that natural rasp and drone. I always thought part of the reason is that VVEL kicks in at some points, altering the sound a bit. I don't mind the rasp much at all, but to a degree, I don't think we can ever create the perfect exhaust combination just yet.

oops just saw they were already posted lol I actually did have test pipes with the set up before and had to remove them within a week. Sounded like a freakin f1 car pulling up to a stop light while downshifting lol

370zpurist

see now I'm curious to see what it will sound with a 2.5" h-pipe to 2.5" midpipe. as oppose to a 2.5" Y-pipe to stock midpipe

Although it will be more free flowing, thus louder, less exhaust turbulence may give you a better exhaust note

right now you are going from 2.5" test pipes, to assuming its a 2.5" y pipe which mates into 1 pipe, then splits back up into 2 pipes with your stock midpipe, which is what 2 1/4"? back out to 2.5" straight pipes, lots of turbulence to be had

Yeah, I downshift a lot... this is bad.

Feel free to send me a prototype! At the moment I'll happily run the current set up but I'm leaning more and more towards LTH's. The only problem with that is the cost of the headers themselves, install time, plus uprev and a tune. That's around 900 + 400 to 800 + 700 + 300 to 700. (I think the tune might be a bit high). 2300 to 3100 dollars. That's a lot of cash. I might be able to get a decent tune for cheap, but those are with my friend's friends (almost all subaru guys) so I'm really at a loss there.

The turbulence is pretty terrible, yeah. The manifolds come out at 2.5 inch, the test pipes are straight 2.5 inch, then the y pipe brings the dual 2.5 to a 3 inch outlet, which drops at the flange to 2.5 inch (I think that's what the midpipe inlet is). I believe the midpipe outlet is the same size as the short tail pipe diameter as well. The most massive turbulence is at the midpipe, although if I change that to constant 3 inch section, the short tails won't match. That's why I'm pretty intent on seeing what you produce; a constant diameter through from the midpipe inlet to the tips. It's either that or I really have to change back to stock cats or go with a catback. I think another option is if I get long tubes and then buy the AAM catback. I can always get the catback and run that with the test pipes until I have cash for the long tubes and tune. I'll sell off my ypipe, but I will have some emotional trauma selling the short tails (if I even do).

our design will be a true dual 2.5" back from your test pipes, since it's an H pipe not a Y pipe, the turbulence will be completely gone

I will definitely see if I can get you in on some kind of prototype deal

Prototype pricing or can I say group buy when it's out

:tup::tup: you bet! I will push for a few sets to be sent out as prototypes in return for reviews!

today I get news as to when this goes into r&d phase :D

Some prototypes would be great, but in all reality they will most likely be more local than not. Hard to tune and dial in prototypes if there are no charts. I can try and datalog but that doesn't do that much.

I'm sure a group buy would be in the works! The short tails are a popular upgrade, after all.

It's a hard choice now. I obviously have to pay something to get the prototype, but I want/need the catback. Any clue as to basic pricing on the prototype?

http://www.youtube.com/watch?v=SJYTjnXbyRA

All I need is that H Pipe & I think I will have the sound I want!
Also, video should have decent sound. Let me know...

More to come with GoPro Hd Hero 2

Sounds very accurate. What's odd is I don't hear the 3-4K drone from in the car, although that's likely due to the fact you feel drone and resonance more than hear it.

Sounds good! Maybe the short tail midpipe will be the final solution!

If you have computer speakers with decent bass, you can kind of hear it better in this video..

http://www.youtube.com/watch?v=pnuEV...ature=youtu.be

Oh yeah. Definitely captured that drone.

great vids Nick, those fly bys and launches sound amazing

purist, no pricing just yet just because it needs to be built first so we can figure out all the cost on material/labor :tup:

You know I will be down to write a review & video for the H-pipe. Maybe Ill even tune it after for max results...

Non-tunes vs tuned comparisons?!

we recorded +15hp +11tq gains from stock to our AAM Competition 2.5" true dual only

I'm sure results should be similar and a whole lot more after a tune!

I'll be keeping both you guys in mind for prototypes

Definitely excited. You might be able to tell.

Just don't go deaf on me too fast. Don't want to have to yell over the phone just so you can hear me hahah JK

bionic ears exist. I think I'll be ok.

Is AAM's R&D making some progress? I'm moving to the catback but I'd still love to try this out. It's the only reason I'm holding onto my short tails, lol.

no real progress yet. Our production team is a man down so our fabricator has been stuck building stock

I guess the fall chill is starting to hit pretty hard over there?

so will this H-pipe work for us guys with a nismo to replace the stock nismo H-pipe?

It should. the only question with the NISMO that was ever a problem was the total length of the system.

EDIT:

Actually it might just be the total length of the rear section, i.e. axleback.

I have a Nismo and I really need this mod. I looked under the car while removing my resonators and dang that pipe is small! I need to know if this will fit the Nismo. There are a lot of Nismo owners begging for a solution to Amuse's $2000 H/X pipe. Please AAM be the one to make this! I will promote it as much as possible if you do! :tup:

Yeah the factory piping is pretty atrocious.

yes in theory this set up will fit the nismo rear section, as regular rear section and nismos are interchangeable per a few different post on this forum

header > cat > y pipe > mid section > rear section
header > cat > y pipe > mid section > rear section

my goal is to replace the section above bolded in red with a 2.5" true dual to bolt onto the stock rear section OR AAM short tails

I'm currently working with a forum member to see if our H pipe ALONE will fit onto the amuse rs-silent, designed specifically for nismo 370zs (meaning there are 2 inlets)

It was great talking to you Khoi. You guys are awesome! :tup:

Any specific timeframe on the H-pipe for the Nismo, Khoi? I'm thinking about picking up the Sunline Racing Hpipe but would have to wait till the end of November to aquire it. Let's get this piece made guys!! :happydance:

we are sending out measurements of our h-pipe to a nismo customer to see if it matches up to his oem h-pipe. According to our production boss he said these h-pipes were designed to be interchangeable

but we just want to cover some bases first and maybe send out a set discounted for someone to test fit since we don't have a nismo z here to test fit it

I can definitely try it on my Nismo if you are interested Khoi!! :hello:

So I'm wondering why stay with the H configuration vrs the X configuration.
But I'm in for a resonated section for sure.

I have no hissing noise from my car with the h pipe. Plus Nissan made it snow h pipe because it made more power hence the power increase from 332 to 360.

if the measurements come close to the oem nismo h-pipe. We will definitely be in contact!

maybe I should try to find a local nismo z to bring into the shop for test fitment.. hmm