FRS / BRZ Intake Manifold - Development Thread - FT-86SpeedFactory by Velox

[VerusEric]

Originally Posted by serialk11r

Sorry if this has been said already somewhere but this thread is freaking long, toward the beginning you mentioned 2L plenum volume on each side, how does that compare to stock?

I'm a little worried because with the 76mm throttle body figure I'm finding, just a quick calculation says at the speed of sound, the throttle body flows 37L/s and 4L is quite significant.

I guess now I'm thinking hard about ITBs lol.

Rough measurements of the OEM is 3.5-4L plenum volume IIRC.

OEM throttle body is 66-67mm, not 76mm.

[churchx]

That intake looks beautiful. But i guess for most potential performance gains might be of higher priority, as in even something ugly would do, IF it brings more ponies , and vice versa, wonderful looking parts are nice in show cars, but if not backed with performance rise .. hence .. any dyno numbers?

[VerusEric]

Originally Posted by churchx

That intake looks beautiful. But i guess for most potential performance gains might be of higher priority, as in even something ugly would do, IF it brings more ponies , and vice versa, wonderful looking parts are nice in show cars, but if not backed with performance rise .. hence .. any dyno numbers?

Yes, we will get dyno numbers when all the components (currently waiting on bell horns) are here and then we will be dyno testing them on both FI and NA applications. We have no plans to pre-sell any without dyno backed performance and we will not mentioned any horsepower gains until we see them ourselves.

[abraxis]

Originally Posted by NotEric6

Yes, we will get dyno numbers when all the components (currently waiting on bell horns) are here and then we will be dyno testing them on both FI and NA applications. We have no plans to pre-sell any without dyno backed performance and we will not mentioned any horsepower gains until we see them ourselves.

Could you make sure to provide tuned and untuned results please? Thanks.

[Calum]

Originally Posted by abraxis

Could you make sure to provide tuned and untuned results please? Thanks.

Untuned results could be flat out dangerous for the engine if the air:fuel ratio is that far off. No price has been mentioned, but I think you can assume anyone buying this will also be in a finanicial position to get a tune as well.

[steve99]

Originally Posted by Calum

Untuned results could be flat out dangerous for the engine if the air:fuel ratio is that far off. No price has been mentioned, but I think you can assume anyone buying this will also be in a finanicial position to get a tune as well.

Would the afr be off ? for NA car
if you using stock intake and maf sensor housing ect, then maf sensor should still be calibrated.
maf detects :more air flow , ecu adds more fuel

unlikely is going to flow past the maf limits. NA

[nelsmar]

Yeah if anything a slight mad adjustment may be needed due to the air flowing slightly different past the MAF but it wouldn't be dangerous. However if you are looking into this component and not considering a tune then this product is honestly probably way beyond your price range. Tuned baseline vs tuned manifold is what really needs to be done.

[Hyper4mance2k]

What is, waiting on velocity stacks?...
[ame="https://www.youtube.com/watch?v=vWuQVpBeqLs"]Jeopardy Theme Song - YouTube[/ame]

[BatStig]

Originally Posted by nelsmar

Tuned baseline vs tuned manifold is what really needs to be done.

YES!

[VerusEric]

We will be doing a tuned baseline vs. a tuned intake manifold comparison. We are not interested in testing in another fashion that skews results. We're not interested in "tricking" the ECU to run leaner then a stock calibration does and make more power that way either.

AFR will be dialed in to remain the same between baseline and intake manifold. We will be testing it on my personal car first (NA application, as stock as they come) and then shipping to FT-86 Speed Factory to be tested on their time attack car (FI application).

[sidesleeper]

Certainly an interesting design. What's the AN line hose connecting the two plenum together? Nevermind, found the answer to my question! However, I don't think equalization would matter for FI, but rather NA.

[abraxis]

Originally Posted by Calum

Untuned results could be flat out dangerous for the engine if the air:fuel ratio is that far off. No price has been mentioned, but I think you can assume anyone buying this will also be in a finanicial position to get a tune as well.

They could or might not be, but I don't have the data to make that call. I assume Velox would so I'm sure they would be the best ones to make that determination.

[abraxis]

Originally Posted by NotEric6

We will be doing a tuned baseline vs. a tuned intake manifold comparison. We are not interested in testing in another fashion that skews results. We're not interested in "tricking" the ECU to run leaner then a stock calibration does and make more power that way either.

AFR will be dialed in to remain the same between baseline and intake manifold. We will be testing it on my personal car first (NA application, as stock as they come) and then shipping to FT-86 Speed Factory to be tested on their time attack car (FI application).

Excellent! I'm glad to hear that as most vendors promise dynos and deliver skewed marketing BS instead.

[VerusEric]

Originally Posted by abraxis

Excellent! I'm glad to hear that as most vendors promise dynos and deliver skewed marketing BS instead.

There is no benefit to skewing results. We want to know what works and doesn't work just as badly as you guys. This has been a very fun, challenging, drawn out (unfortunately), and expensive development. Luckily we are partners with FT-86 SpeedFactory and they helped us by splitting development costs on this project with us. They're interested in pushing the platform further just as much as we are .