I have a spare intake and I am planning on investigating having the plenum and runners modified to increase flow on the top end. My last dyno definitely points to a plain and simple flow limit.

If that's it, looks like I WAS correct! :ugh2:

Hmm are you talking about the inset grooves? Aren't those for the o-ring?

Or are you talking about something else?

I think you guys are talking about what I found last december before that probable secret mod was out....
Am I right ?

http://www.the370z.com/members/megan...not-really.jpg

Or this that Ive looked and worked on 3 years ago
http://www.the370z.com/members/megan...1031945000.jpg

http://www.the370z.com/members/megan...1031236000.jpg

Sneaky mofos! That makes sense. I'll see if I can't find another intake mani and play with it. It can't hurt to smooth it out a bit anyway. Any better pictures?

As an update... I got my car back, and I have genuine momentum headers... The car feels just as fast as it did before, maybe a TOUCH faster...

Thing is... I'm now running OEM intakes, so once I put the Stillen G3's back on, it should feel much faster than before. But I'll be waiting for a day where temps are the same as my original dyno run for official testing

You want these .................... but will only fit with the HR head conversion ...

Nissan VQ 3.5L - SF Taper throttle body kit - Jenvey Dynamics

I have these TB on my race car engine with air flowing straight at the inlet valve and they support air-flow to deliver 600hp (NA, @ crank).

:yum:

this thread totally dies. No reviews or dynos form people who've installed them?

My dyno is posted. A whopping 4hp gain plus a brilliant loss of torque. Do it, you'll love the results :)

Sent from my GT-N8013 using Tapatalk

We all know your results, sorry to hear about it. Just wondering what happened to all the other people who got them.

Mine too...322 whp and 272 tq...also found out I had I coil pack clip on cyl 5 was loose when I dynoed... I found that because the car was unresponsive after the tune at low rpms....I'm gonna re dyno after winter.

what were your numbers before the headers?

Looks like kev just got his installed + HFC and z1 tune and got 327 WHP per Z1 Facebook.

... I got 322 in an auto... While hitting the speed limiter... Without the headers... And without a tune...

^what shop?

no dyno run yet since the headers?

S&R Motorsports or something to that effect. I went after new ownership

Nope. If you want to buy me tires or let me use your wheels. I'll be happy to dyno it tomorrow

what......................? cough...cough.......BS....... :stirthepot:





:rolleyes:



:D

^^^LOL, Rusty, my tires have .5/32nds tread and 1 has a nail, maybe both... I'm not running it to 155 the way it sits, lol

So I was wondering did anyone find out the secret to Z1 manifold trick. Another thing is did anyone actually find out if these headers produce any gains now that I've spent all that money getting them?!

If there are gains they are in weight alone because otherwise they aren't worth the cost, labor, or lack of heat shielding.

370Z problems: too good from the factory.

I'll hopefully dyno in a week or so. Again, I have genuine Momentum headers, not Z1's if that helps anyone

Finally gonna get a tune?

Fúck no. Just rerunning it to see where I stand and what gains there are

All I can tell you all is after I put the headers on there was a significant change in how the car ran on the top end, I said this before, we are way to wrapped up in numbers, I might pull mine out in February and go dyno when it is 20 degrees outside and Ill probably hit close to 340 if I suck in in that cold air on the dyno...Here is my final verdict, IF you can do the install yourself they are worth it, if not, forget it, save the money for something else.

Shouldn't SAE correct weather and any other factors when you dyno?

Yeah you know not to be a downer but Nissan did a great job with this six. Just hate it cause after 4,000 extra in this thing I don't know if it really even did any good. While my nephew spent 28,000 for a 2008 335i twin turbo w/sport package. Dropped 1200 at a swap meet and is pushing 450hp and killing about everything on the track. My first Nissan and I love it. Just wish we could get more support from the Nissan community on what to waste our money on and what really benefits our cars. Hell now they are even saying that CAI are a waste of money. That you benefit more with just dropping a nice set of filters in. I don't know just confusing and discouraging. Hell even the Hyundai Genesis guys seem to have a clearer understanding than we do about our cars and even get crap that is similar for their damn cars and cost twice as less. Damn it now worked myself all up... Going to have a cold one.

Power is left untapped, unfortunately, you have to upgrade every bolt on to really feel the gains. Car sure does love boost though.

I heard a couple of guys say that nitrous is the way to go. Cause it is only there when you need it and don't have constant heat being pushed into the car. God you don't know how many times I have thought about getting TT. But honestly 10,000? I could drop a LS1 w/super charger and still have 2 grand in my pocket. Better center wait and parts from then on out cost a dime a dozen. I hope just for the fun of it Nissan drops a V8 in these cars one day.

While I am a mod freak(and also I have no labor costs I do all my own work so I have parts only investments) and while I like speed, the older I get the less I "care" if my car is faster than car X or has 5 billion HP... I am sure a large portion of the Z community, myself included did not buy the Z and saved for a year or 3 could acquire a GTR(not new in all cases) that will crush all but some boosted Z's, but I do need a gear box, an sure there are other options, hell even an evo can get crazy hp with low cost but I like the styling of this car, the way it feels(for the most part, still don't think the handling is as good as it should be with my setup- for another day) and I have bench marked against the current market car and have achieved my goal against the 5.0 mustang, so at the end of the day, I enjoy this car, and am happy with the performance as a whole, but as I close this super duper long run-on, I will be boosted next summer, and it will cost a stupid amount of money, but to me, it is worth it.

:stirthepot: :D

So did Andrew ever get his car on the dyno for a post headers pull?

No señor. Get new tires. One has a puncture. LOL
I have another set of wheels and tires sitting in my garage though. When I get less lazy or when I have a day off I might swap them

Haven't you been needing new tires for a while? Do you have another car you are DD'ing? Where do you do your dyno pulls, BTW?

I got new tires. And one of the rears has a patch. Give me your wheels to dyno. And no, this is my DD
Look up for where I dyno

Anyone who did these still have their OE headers? I need a set for cheap plzzz!

Define cheap? No doubt it would be $50 shipped. I'd do $150 shipped. But could not ship till Friday afternoon. I do not have the OEM heat shields. I want out of my storage.

Yes 150 is fair IMO, DEfivepoint0 PMed me last night, if that falls through Ill PM you, the Z1s have no heat shields, I am not really concerned about it, I could actually wrap them...

I am surprised such a popular thread didn't yield more reviews and dynos. What happened to all the people who were all psyched up and got these?