I'm just wondering which is the better choice. I've heard great things about them both but I haven't seen a side by side comparison of gains or losses. I've looked through the ppe thread and maybe I missed it. But my only worries about the ppe is it mating up too the motordyne xyz pipe. I'm staying na and emissions isn't an issue. Jw how they compare; I'd assume the Ppe makes more power up high and thAt the Crawford + art pipes has a impact on lower and mid range power. Any thoughts, suggestions?

And just for reference it's an 03 stick with all the intake bits and exhuast bits minus headers, I have test pipes but meh.
The future plans are a 3.5 intake, a overbored nwp tb and cams after the headers. Just trying to get all my ducks in a row ,thankyou very much!

 

Sorry I don't have any dyno #'s of mine stock to Crawford hfcs, to arts, but as NA, the Crawford hfc was a nice upgrade that (proven gains) I could feel in response, hard accel. and up through the midrange rpms/speeds; more agressive exhaust note. Call Doug at Crawford, he's the owner and makes them himself. You can't go wrong with them staying NA no doubt. Also, they fit perfect to stock Y-pipe, then I got the MD system (no ARTs) and it (XYZ) all fit well to the Crawford hfc's.

Was very impressed with it all, but then sold the Crawfords and went with arts. They are pretty close price wise and I personally would say that the ART pipes are the best out there for proven whp/tq gains. If I were going to spend that $$, without question go MD ART pipes especially since you don't need to worry about emissions, etc. That's my 2 cents; I had the hfc's for a couple of years and now arts for a couple more yrs. Good luck with it all! *One thing, while still NA with the Crawfords/TDX 2 set up, my car still pulled hard all the way up to very high speeds just fyi.

 

Well I already have the y pipe and test pipes and a nismo exhuast. I plan on putting a electronic exhuast cutout on the y pipe where the resonator is at( with some nice v bands if I decide I don't like it) but that's all good feed back . But I figure since the Crawford headers and art pipes are in the same price range as the ppe lt which would be more of a benefit. Do you think the art pipes would bottle neck the power? I'd really like to be able to make power up to 7000, I know that's more parts but I'd like to get it done right before then, instead of having to change parts out once I'm putting in cams. I feel like I can't go wrong with either choice but the feed back like you have helps greatly when making these decisions.

I'll add just for reference my current part list and future
Current:
Jwt pop charger
Z1 intake tube
Overbored stock tb
Kinetix velocity intake mani
Z1 test pipes
Nismo y pipe (have the motordyne out in the garage)
Nismo s tune exhuast
Nismo short throw
Bc coil overs
Varrstoens ( cause they'll get scratched up)
Bridgestone extreme contacts 245 up front 295 in the rear
Other misc stuff like catch can and what not

Future
Clutch and flywheel with a cd009 tranny
3.5 intake
Headers
Cams
Hr oil pump with custom gears
Nwp tb over bored
Exhaust cut out
And yeah ill call it good oh and a new tune ofcourse

 

You mentioned the Crawford headers, I must have spaced out cuz I was thinking Crawford HFC's that I had, sorry about that. Yeah, the headers would cost quite a bit more than the HFC's. From what I gather, their ceramic coated headers are supposed to be about as good as it gets for the Z33.

As far as the ART's "bottle necking" any power, I'm no expert, but I can't imagine that they would do anything but help as far as scavanging of back pressure. There are plenty of sharp guys on this forum that could help answer your question/s in better detail.

 

Thankyou for your help on it, I appreciate it! I just wanna do it right the first time.

 

Hey npr350z, i too was in the exact dilemma!!! I do believe the crawfords are absolutely amazing, there is tone of R&D behind them. Funny thing is I went with the Tomei V2 headers (very close to Equal legnth, u can check the tomei spec sheets).

The reason for doing this is because it isnt about getting the best part in its designated field, but about getting the right parts that work in harmony/syncros. The first person who brought this to my attention was Adam from Z1 (u can research on his build) I chose the Tomei V2 headers primarily because I also purchased their 264 cams, which are supposed to work beautifully together. Ive seen builds from Gab3d, and Blue350z from youtube, have incredible results. (285-295whp on a DE).

Of course numbers dont matter unless you use them as factor to determine the net gain. So my answer to you would be, to choose the size and manufacturer of your cams before you jump on any headers. If you decide to go with crawfords, I have heard many people say they work great with the nismos, since they both are great for low-midrange. If you go with tomei headers and tomei cams, you know they tackle the mid-high end part of the power curve. (which in my opinion is where most of the racing happens anyways. just my .02

Im currently running the HKS true dual exhaust, motordyne ART pipes,motordyne plenum spacer,JWT clutch and flywheel, JWT valvesprings, tomei V2 headers, tomei 264 cams, 4.08 gears, and quaife lsd . Car is a complete diff animal, than from jus simple bolt ons.

Good luck with everything.

 

While on the topic of things working together, most shorty headers have a 2.25" outlet VS the PPE's 2.5 outlet. That would mean the the shorties should work better with a 2.25" exhaust and the PPE headers better with a 2.5" exhaust, so is it safe to say that shorties work better with mild cams and the PPE"s will work better with more aggressive cams, or am I wrong to think of this?

 

That is an excellent point. I was aware of this when choosing the ART pipes, but should also be considered when chossing the headers in order to avoid any custom welding,etc. I believe my HKS exhaust has a dual 2.25" outlet, which makes it great for the mild - moderate camshaft application. And going back to proper sizing, in order to create optimal air flow. You should look into if you are going to stay NA or eventually go turbo or supercharger. In my case, I know I would like to upgrade to a Vortech, so i chose the tomeis, which seem to have a curve similar to that of a supercharger curve (more linear). Also, you dont want a cam with too much overlap, which can prevent you from producing boost, which is why I think the tomei 264 was a great choice for current situation. On top of that many people on the vortech threads seems to run the tomeis 264 for that specific reason, and say to make a nice difference compared to stock cams.

 

Well, with cams depending on how aggressive you will probably want PPE headers. The PPE headers bolt right up to the XYZ pipe. It's what I'm running on mine

 

My SG headers, PPEs design is based of them, made great power with the MD exhaust. I have yet to see anyone reach my power numbers and also shift the power to the right.

I actually got into the different powerband patterns that people, like SG, Z1, and Gabe3d, had in my build thread.

https://my350z.com/forum/na-builds/4...50z-revup.html

It starts around post 154.

 

why an exhaust cutout? seems kinda dumb

 

Damn. Badass build on that de motor bro.

 

Thats what I call a build! Ive actually seen some of your posts in the past. Ive seen how well you car matches some of these in depth NA builds. Its safe to say, im no where near that arena. Most im doing is valvesprings with the 264 cams. Granted you went with the 272s from JWT, i can easily say, your car was a whole different animal. But, the fact remains that the OP should consider all elements of the build, rather than just pick the top(or most popular) choice from each category.

I agree, that if he goes with an agressive lift, he should consider the longtubes, but if not some equal legnths (either crawford or tomeis) could suffice. Like i mentioned prevously, the reason i think the 264s were better for me, was because i plan on getting a vortech in the future, and the 272s would be too big for my application