The Kinetix is stainless steel and fabricated with no where near the expense in manufacturing compared to the Cosworth's cast aluminum and carbon fiber design. The dyno above could be heat soak related gain vs loss, but no way to be sure without more data. The fact that Kinetix's own dyno did not show a gain for 95% of the curve says something. The tapered design is at least reasonable compared to their first crappy piece. Not sure if there is a bell mouth design internally at the runner openings in the Kinetix, but I doubt it.

The Cosworth clearly has much more R&D put into it and more goes into each piece in manufacturing. If the Kinetix was less than half the price, maybe it might be worth considering... At nearly the same price as the Cosworth, it would be ridiculous to choose the Kinetix.

 

Was their car F/I?
I'm thinking not but i would still like to see the graph your talking about

My personal opinion is all products are in three cat.
-BEST in N/A setup
-Good in N/A or F/I
-BEST in F/I setup (the one im looking for)

If anybody out there can show me numbers or curves for either product in a F/I setup it would help me alot

Also i saw the Kinetix priced in the 700 and the Cosworth priced in the 1150, if you have seen cheaper prices where and how much

 

The dyno graph is on the Kinetix product page. Wow the prices for the Cosworth have really gone up. When I was last considering the Cosworth, Sharif had a pre-order for $900 something, but that was over 2 yrs ago now. The prices now range from $1200-$1500! I guess the Kinetix is about 1/2 the price. Both are overpriced. Cosworth because of ongoing manufacturing issues and Kinetix, because they choose to...

 

Like your screwed either way.......lol!!!!

 

I wanted to try the cosworth and I like the look of it. I like the Kinetix and for the heat soak stories i heard. I did a laser temp on the Kinetix and never seen any signs of heat soak. Kinetix has a cooler temp then stock.
If you got th Kinetix with F/I you will be happy.

 

Well Forged Performance still has good prices on the Cosworth for those who are interested (and a few left in stock). I figured I better get mine now before the price goes up any more. I should have a polished Crawford up for sale soon if anyone wants it (pic in build thread, link in sig).

 

here is a thread of someone who tested it and it lost power, and i think that you can predict how well a plenum will work on FI based on what it doesn on NA, considering it all has to do with the amount of flow, and the only difference between the 2 is that FI is going to be flowing exponentially more air
http://g35driver.com/forums/intake-e...ed-pics-3.html



can you name a single NA mod that gains "15 or less hp" at the wheel?


i think Kinetix is about half the price, and as far as NA, Cosworth has shown loses over a spacer. And as far as R&D seems like if the Cosworth was designed for FI applications it wouldnt have the endcaps with the potential for leaking.

Soon i will be buying a new Kinetix Velocity and i am going to back-to-back test it vs my angled spacer. I will be sure to update with the results

 

^ lol - you are misinformed. The link you posted shows a dyno that actually shows a peak hp/tq increase with the Cosworth vs a MREV2/spacer combo on a NA setup. Not bad if you ask me - all within the margin of error (heat soak, etc) for a dyno pull.

For FI, gains in the upper RPM range for the Cosworth are well documented by multiple parties, vendors and users alike. There is no need for you to "predict" what will happen , because clearly your skills at clairvoyance are lacking.

 

oh really, well i guess i cant read either... the green line on the last graph is a spacer with ALOT less mods, the comparison is between the red and the blue

 

Its a must for TUNE if you want to gain good power with a plenum change. Thats with cosworth and Kintex. both time after install I put it on a dyno and my car was very lean. The reason a spacer shows gains with out a tune. Is because it very minimal change and the ECU can adjust. The plenum change is diff. ECU cant adjust for that much. That the some for any bolt on.

 

i agree with you there, but in my case i was very lean with just a spacer, maybe its becuase its an angled, that could by why some people see higher gains out of the MD spacer because it isnt as thick.

 

Correct, apparently you cannot. All of the pulls are all within the margin of error for a dyno pull. For NA, a Cosworth is roughly equivalent to MREV2+spacer. Clearly the cost/hp win goes to MD. An angled spacer isn't even in the running. Nor is the Kinetix. Speculation based on data for other products is pointless - so let's end it there.

 

Well apparently they did about 5 pulls on each setup which kinda narrows down that margin of error, and those final number were based on the highest numbers in each setup(which was the first Cos pull because of soak). I am trying to be open-minded towards all of the products and basing what i say on the only numbers i can find, in your case your being biased towards what your preferred shop sells. Which i dont really guess i cant blame a shop for highly recommending the Cosworth, with it being $1500-$2000 im sure their is a pretty good profit margin.

 

^^^ Forged Performance sells the Cosworth for a lot less, for now!

If someone does actually produce FI data for the Kinetix, that would be very interesting to see.

As far as N/A goes, the Motordyne products cannot be beat. Where is the Kinetix comparison to an MREV2+spacer? They compared to stock - puhleeze! More data is needed. At least the Cosworth holds it own compared to MD (even if it is 3x more expensive!).

 

Under 1k rc?

 

Not quite that good, but close... Their website price is $1150, but keep in mind that they also price match most all products. Being a long time Forged customer helps also so Sandy will be able to hook you up Jay.

 

It would be interesting to see the data of the Cosworth in a F/I setup as well

 

Looking at the graphs how can you say the Cosworth hold its own against the MD?
The area under the curve is larger for the MD than the Cosworth!
You have more useable (and stable) power with the MD

Someone made a comment earlier that based on the data shown that the better N/A setup could show the best F/I setup (off of fundamental dynamics). If thats the case we should all go get the MD setup.....lol!!!!
But i think it is more complex than that? (sadly i can't be sure until we get some data)

I know somebody in this forum has data on both set-ups either N/A or F/I a comparsion is needed i would like to make my decision.

Im offering my F/I car up to make some pulls if anybody with a dyno and/or products wanna settle this debate!!!

 

Just search the FI forum for "Cosworth". Injected Performance and Forged Performance both have threads that indicate a gain with the Cosworth with FI. Not spectacular, but significant above 6k rpms (on the order of 30 whp). BriGuyMax also dyno'd after installing and achieved significant gains for his APS TT after installing the Cosworth (I never saw a dyno sheet posted though - just what he reported in his thread). Here is one quote from the IP testing from Hal of Injected Performance, a highly reputable tuner:

I'll be the first to qualify this statement with a "high rpm only" cavaet though. It's why I've held out so long looking for something that increases high rpm power and maintains mid range torque as well as MD products. Nothing I've found to date.


Dyno'ing my own FI setup multiple times, I'm used to seeing variations in the range of 10-20 whp from one run to the next and that makes me a bit skeptical when looking for gains I suppose. Looking at the torque curve I see a max gain of maybe 10 wtq at any given point. On the repeat runs with the Cosworth, there is variation present also - maybe a difference of 5+ wtq? If there is 5 wtq variation run to run with the same product and one product shows at most a 10 wtq gain over another, I'd say they are comparable. I'll be the first to give the nod to Motordyne though for NA, especially when you consider the cost/hp factor, so no argument there.

I have heard many claims that spacers don't do much for FI other than perhaps balancing airflow, though I haven't tested that myself or recall seeing a nice before/after test posted. Tony of Motordyne has indicated in prior posts that sometimes gains are seen, sometimes not. There are so many variables to account for, more so for FI.

 

Noob question for you guys. Will the Kinetix V+, not the SSV, fit with a MREV2 lower plenum and a 5/16 spacer with out having to swap the strup bar??