Hello everyone,
A few weeks ago i contact with a local dyno, Adams Automotive, about setting up time to get the car on his dyno to compare the Kinetix Velocity Manifold vs a Stock Plenum with a 5/16 Plenum Spacer.

Well today was the day...

Sorry i don't have a lot of pictures I did how ever data log every single pull so if you want to go in and dissect whats going on more power to you. For those who don't know my car is a DE with 11:1, BC Stg 2 Cams, OBX Longtubes, OBX Dual's, MD 5/16 Plenum Spacer, Injen Long Ram Intake 3" tapering down to 2.5", Stock Throttle Body and a Haltech Redbox. This car made 288whp 268wtq at a 1.07 CF a few months ago.

It took about about 3 hours start to finish. We had some problems with the dyno initially with some wheel spin and not correctly calculation engine RPM. Once all of that was figured out we started our tests
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So the Stock manifold made and average peak of 274whp and 210wtq with an average of 159hp and 188wtq through the pulls. with a 1.00 CF. This was an average of 3 runs. So i was making a little more than than i did but its also 30* cooler than when i initially got tuned.

Now the big surprise of the day the Kinetix numbers 276whp and 218wtq with an average of 172whp and 203wtq through the pull.

Crazy right?

The Kinetix stomps the crap out of the stock through the midrange. Here are the pics i took.

This was the first run for each of the two.



Closest peak runs between the two.




Comparing the under the curve power, look at that difference Dark Blue is Stock manifold and Light Blue is Kinetix

 

Been following your build for a while, awesome to see the results between the two manifolds, so thank you. That is a crazy difference at 4k and below. It looks like after 4k, there is about 6-18(?) tq/hp difference between them to redline. I expected the Kinetix to pull away near 7k, not be about even. Is there a reason you didn't rev out a bit further?

 

I'm reving it out to 7400 which is the safe limit of the Rev-up oil pump. I'm thinking the reason its so close up top is due to the Plenum spacer. With out it i'm sure it woudn't even be close.

 

Thanks for Sharing, Conway. Looks like you benefited much with the swap with your setup. Torque line look awesome,

 

Impressive and a hat-tip for doing the work to do the comparison.

I wouldnt call 8ft*lbs stomping but still a solid gain and most importantly more 'area under the curve' for sure.

You should note that the engine's tune was for the OEM manifold ... so a kinetix-specific tune would yield further gains - especially if your tuner can modify your VTC maps to optimize the mid-range torque even further!

 

Sorry i meant, stomped the sht out of it in the power under the curve. Peak numbers are not as impressive but man the mid range feels good.

 

^For sure ... that's what I first noticed with your dynos! regardless - nice gains!

 

Thanks for the comparison.
I'm confused and might be missing something but why's your torque so low? Peak hp is close to 300, torque is struggling above 200 but then the average #'s show torque dramatically higher than HP. WTF am I missing?

 

no correction factor

 

Correction factor for torque only? HP's down 12 but TQ is down 50.

 

CF is 1.0, I don't know why the torue is so low. I just looked my old dyno sheet and it said i made 30 more ft/lbs on that day. But i don't belive that one bit.

As for why the averages are so different look at how flat the torque is compared to hp.

 

Yeah, I get the averages I suppose. The TQ is pretty constant while HP, as always, has a parabolic nature to it. I think there's something wrong with their dyno though cause the TQ is obviously not nearly as low as is stated on these charts and if the changes between the spacer & Velocity are based on a %, then the TQ increase may be more than what's shown.
So, r u happy with the gains? I'm glad the Velocity proved itself. Just a couple more HP but a nice chunk more TQ and better area under the curve. It's gotta feel quite a bit stronger. A larger t.b. and a much larger intake pipe and you may decide to re-sell that vortech for the sake of reliability.

 

Yeah - good point

 

Yea, no.

I noticed the varience with the torque being low as well but im sure it has someyhing to do with the dyno calibration. Whats important is the way the curve looks, dyno is a tool to measure the cars performance, if there are gains with the curve, thats all that matters, all dynos dont read the same.

I wish my torque line was like that, even on my old vortech dyno with the V3, the kinetix helped to allow my torque to stay flatter longer then fall flat on its face like the spacer and oem plenum to rev to 7100 and have more power overtime, even with stock cams.

 

Very nice.

Though I think the gains of the Kinetix alone without the extensive breathing mods (11:1, BC Stg 2 Cams, OBX Longtubes, OBX Dual's, Injen Long Ram Intake 3", etc.) would be negligible. Which makes title of this post is somewhat misleading.

If anyone can prove otherwise...

 

Reading and research always trumps spoon-feeding, but here you go.
https://my350z.com/forum/intake-exha...intakes-6.html

 

^^ This is in line with what I expected. OP's existing mods led to a much greater gain.

Add the MD 5/16 spacer to the "stock with zero modifications" car and the gains are further minimized.

 

You are correct to an extent. The Kinetix aint for the average Z/G owner. If you want to rev higher and keep making power you need to eliminate the OEM strawneck plenum. This plenum with its longer runners and design does just that,

Id like to see an NA spacer and plenum car make an 11 sec pass on the 1320. Cause the only setup that did was with the Kinetix velocity, supporting mods and a higher redline.

 

Of course a breathing mod will perform better with complimentary breathing mods. The spacer will do better in the middle of the chart. The power doesn't fall off as bad with the velocity. The gains aren't negligible. The fastest n.a. Z gets 4-5 mph above and beyond a great custom intake (which trumps a spacer) in the 1/4 with the velocity just as BSDE said above.
My power doesn't fall of either and I do not have the velocity nor a spacer.
See the thread below; Spacer vs Velocity

 

Look i'm not saying this is the end all be all to the debate, i'm just showing what my car did. Once i get the blower on the car i MAY redo this test, but the car is 100% getting tuned with the kinetix.

The only way to do this test is:

3 Runs w/ a car tuned for no plenum spacer

3 Runs with Spacer and a tune

3 Runs Kinetix with a tune.

I unfortunately didn't have the time nor the money so im sorry about that.