trying to add power
 

hey guys i have bolt ons for my Z...CAI, HEADERS, EXHAUST. im looking for other options and opinions on adding power without doing FI (forced induction) or is that my only/best other option?

HFC's or TP's.. M370 manifold.. tune.. engine build.. 4.10 gears :)

Test pipes or HFC?

Edit: Ha dang you beat me by a second

OP, are your headers shorties or long tubes? If they're shorties then replace them with long tubes unless they're the momentum headers. Other than that, the M370 manifold and a tune are about the only other bolt-ons left as far as power mods go. The rearend gear and a lightweight flywheel will liven up the car even though they don't technically don't add power.

Tuning wise, I'd probably wait until ECUtek gets the VVEL part all ironed out and then get it tuned using that software.

You could get a hold of visconti on the forum here. He's pushing the ECUtek tuning software and was talking about an E85 setup that he wants to develop for the Z34 platform. He seemed pretty confident that the ethanol option was the next step for adding easy power to the motor.

Pullies, bored throttle bodies, weight reduction.

long tube headers, no cats. i am def thinking about getting a tune not sure which or where unless someone knows a good shop in the NJ area. and the m370 manifold i dont know much about ill do some research and look into it. do you have any info or specs on it? thanks

The M370 is really just a 350Z manifold with new bolt holes for proper mounting. The general consensus is that you must get a tune to realize any gains from the manifold. Also the gains are going to be midrange not peak.

thanks for the info brother greatly appreciated

RT Tuning. If you want to take a drive. Vince tuned mine. :tup:

ive been looking into the m370 manifold by motordyne and have seen lots of mixed reviews is it worth the money for those who have it??

It really depends on what your goals are. If you only care about peak HP then it's probably not worth it since these typically don't net you much up top.

Now if you live in reality and care about the midrange power then my opinion is buy the M370.

gomer 110 appreciate all the input brother thanks. yeah i looked into it and the peak loss compared to the gain in midrange seems to be minor however digging around on the forum i see some people saying the had almost no gains in any hp with it..and others saying they did notice a difference right away

COMPLETELY disagree, sorry brother
I make a manifold conversion too and I dyno'd it, installed the new manifold, then re-dyno'd it, same day, didn't even move the car, AND my car had TP's, intakes, a CBE, and no tune

I lost 2-4WHP peak (above 7200RPM), but gained 12-15HP AND TQ across MOST the powerband. The loss of peak HP is NOTHING compared to the area you gain under the curve.
Ask ChrisChhorn, he's got my manifold

uhhhhhhhhhhhh make me one?

I have the most rare manifold! Only 1 every made!!! Muhahahahaha!

LOL!!! All that R&D for a 100% loss, LOL

Get more and I have people who want....you said you cant source any manifolds lol.

... Lol, I know... No idea why, Motordyne must stock every 350Z manifold, lol

If anyone wants to eBay one or get a used one, I can modify those and it'll save you some money as well
(BTW, my sales have been approved by AK)

Only the sales of your body....

Looks like I'll have manifold number 2!!! BTW I want that etched into my manifold so I can say its a super rare jdm part ;)

Is it the upper or the lower manifold that you need??

Upper bro

But the upper only has one Throttle Body inlet right???

No, you need the intake manifold from the 350HR. Only 07-08 models which have dual inlet throttle bodies like us. The difference is shorter runners so it helps with more midrange. You're thinking of the 03-06 which is the DE motor with only 1 throttle body.

The one on the left is the DE single TB manifold. The one on the right is the one you need.
http://i1325.photobucket.com/albums/...ps5c01b81c.jpg

ya right lol these are impossible to find!! How much is the service?? I think I found one for $180

PM'd

Sorry new to the game. A newer 370z has a manifold with only 1 inlet and TB? Makes much more sence like to have 2 like the black one in the pic.

You drive a 370z and you have never seen under the hood or what?

Actually don't pick it up for a few days. Only been under the hood a few times and never thought to look since I saw 2 intakes.

Those two intakes go into a throttle body on each side, just like the manifold on the right. You can't have two intakes going into a single throttle body its just not possible. The manifold on the left is from a DE 350z from years 03-06 and the one on the right is from a HR 350z years 07-09 which all had dual throttle bodies.

So whats the upgrade doing? Shorter runners? Boring it out?

Shorter runners making it have more mid range hp and tq which in my opinion is what this car needs more of. Up top it loses like 2-4hp or something like than and your really not going to feel much of a loss, if any. If your REALLY interested in getting it done, PM DEpointFive0

actualy the HR intake manifold has longer runner than the VHR
it make more torque down below and this came from the longer runner alone.
http://www.the370z.com/diy-section-d...take-swap.html


I modified one about 2-3 year ago and a tune is not needed but it would be best to actualy retune the ECU. I also confirmed the gain that HR intake manifold provided , definatly not for the top end since the slightly longer runner moved the peak lower by about 750rpm

back to back dyno testing , same day within 2 hours of each test. (tuned)
http://www.the370z.com/members/megan...e-manifold.jpg