the only one loosing respect is hypertune.. coming on a forum like a 2 yr old crying that something im sure he has never seen in person is a copy.

cool story bro

 

It's coming soon I hope... Pang (Pfabrications) is making alot of parts for me. It's a twin scroll setup with GT35R turbo. I ordered the IP mani and had them send it to Pang for fitment on the IC piping.
He's almost finished with the parts, then everything is going to Swaintech for coating.

On topic: the intake manifold looks great. I've already got the IP fuelrail and a 70mm Skunk2 TB. I think it's gonna kick some serious ass
I've been looking around for the Hypertune for years but either no response or couldn't get it.

 

No i do not agree with that statement at all. He simply is just trying to get it out there that someone stole his design. Weather this is true or not who knows... but from what i have read Hypertune has no US patents on there manifold designs. If thats true than lawyers cant do didly, and ranting on public forums might be the next best alternative lol.

But If someone did rip off his design... (straight up used his mani for a cast mold) I could see where he would be pissd, and lost respect for calling it there design and marketing it as a "new" manifold. But heh do your thing. I mean shit Taiwan doesnt even recognize US patent laws and directly copies whatever they feel they can make a profit on.

Just my .02

Honestly i could care less...
for yet another Product for the S2000
if you copied it and are passing it off as your own.

 

This is why the Inline will sell soo good. There has been a demand for a larger volume intake mani and seeing as know one could find the hypertune stateside. Someone had to step up and make one.


It does look like a very nice piece, and i am intrested in seeing the forced induction dyno results.

 

It's called "relative" for a reason, the fact is it's not actually negative. It's below atmospheric but still positive. You can have a negative pressure differential but not an actual negative pressure.


You chose to use -10psi in your example I just used you numbers, I am not ignoring atmospheric pressure. For your first example (-10psi) the throttle plate has been shut for a few revolutions and the pressure in the entire manifold is around 4.7 psi because of the vacuum being pulled by the motor. Since the whole plenum is at that pressure it is the only thing relevant to the velocity stack entrance, where would atmospheric pressure come in?

[QUOTE]And lastly a velocity stack, depending on geometry can actually hurt a forced induction cars mass flow. There are 2 reasons for this, but they both equate to 1 parameter called K= pressure loss due to entrance effect. As you can see in the diagram the velocity stack config has the highest loss factor of all the entrance effects. This is because pressure loss varies linearly with air density and as the square of velocity. So as a turbo car shoves more air into the manifold, air density increases as well as air velocity, leading to higher pressure drops due to K. For forced induction a well rounded inlet would make more sense.

 

the scale on the 2nd graph is less than 0.25% lower than the scale on the first one.. not a significant difference IMHO

 

I'm confused with all this talk. I just like turning the boost up and flooring it.

 

The scale isn't significantly different but look at the colors, and my drawing was a quick 5 minute example. A true velocity stack with proper taper and variable radius would be even better.

Either way it's certainly a lot better than putting up irrelevant diagrams and claiming the one with a "velocity stack" is the worst.

 

Inline Pro has been in the game a long time. What makes you think they would copy Hypertunes? Which i have never seen or heard of? I love how people just jump to conclusions.

 

I agree with the v-stack being the "best" but from what i have seen its not enough of a difference to matter. Its not going to make enough difference on an NA car to account for variance in a chassis dyno and its surely not going to matter on a turbo car.

The main thing that I was saying is that the way the manifold in the pic that was posed of the round plenum with v-stacks sticking up 2/3 of the way is worthless. the outer wall of the plenum is so close to the opening of the stack that it would cause issues and there is no reason what so ever for the stack to be that high off the floor.