Y-pipe decisions
 

So..... I'm kind of in a toss up on deciding on a new Y-pipe. I have the litespeed racing full catback exhaust but I feel the the y-pipe is sub par so I wanna swap it for a better designed one.

Litespeed racing y-pipe

http://cdn.shopify.com/s/files/1/019...4x1024.jpg?505

So now the toss up is between the

Motordyne XYZ:
http://www.motordyneengineering.com/...20straight.jpg

AAM comp Y-pipe:
http://aamcompetition.com/images/F59765294.jpg

Tanabe Y-pipe:
http://cdn2.bigcommerce.com/server20....1280.1280.jpg


Its clear to see that the litespeed one is an OEM style with bigger diameter piping but I feel the flow isn't as efficient as it should be due to the bends. I have a feeling where this thread will go with "Motordyne all the way" but I figured I'd ask anyways. Any major differences between the 3 choices I have as far as flow and design? I know XYZ you can change the straight pipe to resonated or hfc but I won't ever need that lol. HP gains is my only concern. Any links to prove responses would be great but I feel like this may just be a toss up.

Custom. It'll be the cheapest

Or eBay

The huge benefit of having a Motordyne Y pipe is it's modularity. Not only that, but the HFC is pretty boss. 3" inlets, expands to 4 inches and is only 200 cpi. It's far down stream so boosting with it is still viable. It's expensive, but it's proven.

I think the #2 would have to be the Tanabe, but it's 2.75"... I know that because my mid pipe on my Tanabe is 2.75" and irritates me because it is such. I don't see much if any power loss on a NA carwith this compared to a Motordyne straight pipe. The merge collector is well designed.

AAM's seems more like a high quality Ebay Y pipe IMO. Between that and what you have, I'd just stick with what you have.

I vote Motordyne's but I'm slightly bias. It fit perfect with my PPE's and Tanabe, and you have 3 options for sound.

I probably will end up with Motordyne but just wanted to find out other peoples inputs. I won't be turbo'd or supercharged anytime soon but by the mid July i will be running on nitrous :happydance: Thanks for all your input!

Do i have to keep reminding you I live in Hawaii?!?!? They wanted $975 for custom AXLE BACKS here.....

If you already have a full litespeed then i'd just stick with that. Your gonna spend extra dollars for something that may be only a couple whp apart on the dyno.

Since this is only wanted for whp gain, your results may vary due to climate/conditions/humidity from others and for yourself.

I'd save the extra cash for other N/A mods, your nitrous kit, extra nitrous accessories needed, drivetrain upgrade (if you haven't done so yet) and future labor cost. Just my opinion though. You'll be stuck with a litespeed ypipe that will be hard to sell and will be low balled on.:tiphat:

Selling the Y-pipe I'm not too worried about as I have a friend that wants to buy it already if I switch. Yes, I'll take a bit of a hit on it but being here in Hawaii, people pay a little more for used to avoid shipping costs lol. N/A mods wise, there's not much left for me. My nitrous set up is fully ordered already, just waiting for it all to come in. 4.08 gears with Quaife LSD gets picked up from the trans shop tomorrow :) Clutch/Flywheel, new tires, brake upgrades all get ordered in July. I'm in no rush to purchase so it's kind of meh right now anyways but when I'm ready to pull the trigger, I'd rather have a choice made already :tiphat:

Awesome news:tup: Is there a 1/4 mi track where your at? I was thinking of getting the 4.08 gears and LSD but still on the fence if I'm gonna stay with this setup much longer.

If I TT in the near future the gears would need to be removed. I'd like to know what you run with the gears and nitrous at the track. If you do have one nearby. Keep me posted :tup:

Unfortunately no track here on Oahu but a big car group here plans on shipping cars over to the big island for a weekend just to run on the track and cruise the big island. I wish there was though. I'm from Texas where we had a track an hour away in every direction and that was the reason I bought the damn car but fate brought me here lol. I'll be back on the mainland in a few years though. I'm not sure what my plans for the car are yet though. Nitrous for now, supercharger in the future probably due to more consistent and linear power band for tracking.

i have the motordyne,i got it for the reason of the swapping of parts/adapters. i originally went with the straight pipe on it,and then later down the road got the resonator in place of it to clean up the sound a bit.

as far as power,i did not dyno it before and after the install. but seriously any pipe is a huge upgrade over stock.

why not try out the litespeed one and if its not worthy,then grab a new one?

I have it on the car already with the full cat back. Have had it on for about 3 months now. Just lookin to maximize my gains. This could all be BS too and I may not ever end up switching lol. I just don't like the design honestly lol.

One of the things I would look Into is the type and size of flex pipe used. Those will create a bigger restriction to flow than a tighter radius bend.

Yeah, "Interlock Liner" flex pipes are far superior flow over "steel braid" style.

I'd inquire as to who uses what kind of flex and decide off of that. If they all use the same, go motordyne.

Does anyone have any experience with this brand Y Pipe?

M2 Performance Stainless Y Pipe Exhaust w Flex 2009 2012 Nissan 370Z VQ37VHR | eBay

My Beluga y-pipe is just like the one above...had no issues with the beluga version...I think it's only 149.oo.:tiphat:
http://i21.photobucket.com/albums/b2...ps6afe4e48.png
http://i21.photobucket.com/albums/b2...ps88fd92e4.png
http://i21.photobucket.com/albums/b2...ps5a6044ab.png
http://i21.photobucket.com/albums/b2...ps0183ed85.png
http://i21.photobucket.com/albums/b2...ps6c806b90.png
http://i21.photobucket.com/albums/b2...ps57a39994.png

I like it, can you post a link to purchase one?

if I would have to choose only with your option of the Y-Pipe I would keep the Litespeed racing y-pipe but if you need a cats (HFC) then the XYZ y-pipe would be better since its a modular setup.

I would have go with the Tanabee but its only 2.75'' exit ? which is quite below than what the VHR can flow, it needs a minimun of 3'' single!!!!

If you like pissing money and the look of burnt titanium, you can get amuse y-pipe. This photo is from a member of the forum too.

http://i.imgur.com/a1zvm.jpg%3F1

Motordyne XYZ pipe w/ cat

Another option is to go with any 350z Y-pipe. Simota said that it fits the Z. I'm looking at getting the Tomei one probably later this year (possibly getting a very rare/expensive puppy). This might be a slight thread jack. But does the an aftermarket Y-pipe do anything with the tone of the exhaust? I have heard that it does and other people report that it does nothing to it.

Yes the y-pipe changes the tone of the exhaust! On my Tanabe medalion exhaust when it was first installed i had the stock y-pipe and mid pipe and muffler were tanabe (y-pipe back set, Tanabe at the time was in transition of sending more to the U.S.), after having the Tanabe y-pipe installed i noticed better acceleration ( stock is pretty restrictive), more of a crisp and clean exhaust note, even better throttle response, and it's so beautiful to have as a complete catback exhaust. I couldn't have picked a better exhaust for myself! :happydance:

Tomei tititanium Y-pipe is second to non i have on my z .

Bought one today and the install was super easy! I will drive it around tomorrow to perform the butt dyno.

So you would highly recommend this product to me ;):confused:

The butt dyno says;
Good investment, now get the hfc's.

How are the Y pipes holding up after a few years? I know Tanabe has a good reputation (made in Japan) and Motordyne is also very good quality from what I understand, but has anybody been running theirs for some time? I am especially interested in how the flex sections are holding up. Thanks!

I have 10k miles on my Motordyne Y pipe. No issues with the flex pipe.

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I've had my motordyne xyz pipe for just over 2 years now, ~38k miles or so and it looked good on the last oil change. Then again there's no snow or salt on the roads where I live. Also I'm on stock suspension so scraping on the road is minimal.

Had my beluga Y-pipe for about a year and she's holding up good...3 track days, 4k road trip and about 18k miles. Also I'm in colorado and it's holding good with the snow and mag chloride on the roads...would advice cleaning your exhaust after any weather. Best bang for your buck..in my opinion.

here's a good one ;)

http://www.the370z.com/parts-sale-pr...e-2-5-3-a.html

AAM Hpipe and Midpipe combo FTW Just sayin. Its a true dual setup!

550WHP from a Y pipe, Just sayin. Y pipes are plenty for a NA and benificial for supercharged Z's. True dual won't matter much unless you are turbo. The only reason to choose true dual/ H pipe/ X pipe is sound differences. Z1 mentioned pushing 348 whp (NA) with E85 on a Y pipe based 3" Tomei exhaust. Y pipes are convenient because they are a direct bolt on with no other mod to the exhaust. The AAM is nice for Nismo direct replacements of exhaust components.

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Sound wise it is pretty different. There is no hissing what so ever probably because all the gasses are being expelled evenly and are synchronized by the H part of the exhaust. When I was building my setup, I wanted no drone so my focus was to eliminate any resonance that could occur throughout the system. All in all it worked out great for me. Everything I was looking for in a system was there with this setup. I still have yet to put on my HFC. It might be too loud though so I might put my resonators from AAM back on. It should sound like sex. We'll see! ^_^

This is what I'm going with. Just an addition to Invidia test pipes and an axel-back exhaust.https://uploads.tapatalk-cdn.com/202...b0c24c91d6.jpg

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Maybe someone will decide to jump back on this thread after years and we can get some more feedback on y-pipes.

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I'm curious if anyone on the forum has ever converted the H-pipe/true dual setup on the Nismo back to the Y-pipe setup on the non-nismo models? And if so, what differences are there as far as sound, exhaust note, overall flow, and power?

I absolutely loved the stock exhaust note of my '04 350Z, I have the Beluga axlebacks/short tails on my '10 Nismo and it sounds great, IMO, but just not quite the same VQ35DE "wookie growl" that I was so fond of before...

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Higher pitch, less flow, less power. That sound was very unique to the DE's.