|
|
|
11-22-2009, 04:32 PM | #89 |
Streifenden Komet
9
Rep 120
Posts
Drives: 525i was a 325is
Join Date: Aug 2006
Location: Ft.Myers/Orlando Fl
|
it's over at e90post.
|
Appreciate
0
|
11-22-2009, 07:51 PM | #91 |
23
Rep 194
Posts |
Jetta...thanks for the support...will continue to try to make the best solution possible.
In the need for diversity of solutions or options, some want cheap (hence, the idea of something like K&N or even cheaper), some want outright performance (like the idea of the integrated Velocity stack...but believe that means a higher cost...but again, could be options in the kit). We can reduce the lid height where the strut bar would be...we needed to keep the lid height high in the front to accomodate the mating to the OEM intake pipes, and also wanted the larger volume of the box in total, but will look to see what clearance we can get. |
Appreciate
0
|
11-22-2009, 09:10 PM | #92 |
Streifenden Komet
9
Rep 120
Posts
Drives: 525i was a 325is
Join Date: Aug 2006
Location: Ft.Myers/Orlando Fl
|
This is the link to the 500 whp been there done that post. it contains the dyno, remember it was done with their turbo upgrade kit,
http://www.e90post.com/forums/showth...ghlight=500whp High light, copy, open a new tab and put it in the address bar. Hope this help guys! |
Appreciate
0
|
11-23-2009, 06:53 AM | #93 | |
Major
199
Rep 1,457
Posts |
Quote:
Firstly, Jeremy mentioned a high speed flow, not an increase in speed of the flow. Thus I think that Bernoulli's principal that you mentioned is really not relevant here. Thanks for mentioning him thou, at least you are thinking from physics perspective. Secondly, I am not an expert on this system, however my acception was that the system is not open to atmospheric pressure. I accepted the intake creates a constant flow(pressure) at a given speed of the vehicle thus this will cause an increase of pressure when the line gets smaller. Think it like pinching a garden house at one end and you will feel the pressure will built up on the line before the pinch. Now I might be wrong about this acception. If I am, please explain me in a PM so that we don't clutter this post. Thanks.
__________________
|
|
Appreciate
0
|
11-24-2009, 10:24 AM | #94 | |
Drive carefully :)
6
Rep 322
Posts |
Quote:
But by far it says nothing about that ONLY their CAI will add significant HP, compared to others. So for this topic, those dyno's are useless. I would never give any penny to another CAI - like the ASR - than stock. Ofcourse not. |
|
Appreciate
0
|
11-24-2009, 12:58 PM | #95 | ||
Second Lieutenant
74
Rep 268
Posts |
Quote:
Quote:
Total Pressue = Static Pressue + Velocity Pressure Static pressure is the force giving the tube the tendency to either collapse or burst. This would would decrease as the velocity of the fluid increases (Venturi Effect). It is always perdendicular to the walls of the tube. Velcity Pressure is the forced caused by the velocity and density of the fluid. It is always paralell to the tube. As the velocity of the fluid increases, so does the velocity pressure. |
||
Appreciate
0
|
11-24-2009, 03:19 PM | #96 | |
Banned
79
Rep 5,970
Posts |
Quote:
Lets take this from the top. The air is at atmospheric pressure. As it passes through the filter and airbox, there is a LOSS or pressure. The air entering the wraparound tubes will be at atmosphere minus whatever is lost due to the restriction of the airbox and filter. Any time you have flow through a tube you have a LOSS of pressure, becuase it is a restriction. The tube DOES NOT increase the pressure, it increases the restriction. That means the air on the inlet side of the turbo is at atmosphere minus the loss due to the restriction of the entire intake tract. That isn't even debatable. It's a simple fact. The only questions here are how much loss the tubes present, how much it would cost to replace them with larger tubes, and whether or not it would be worth it. |
|
Appreciate
0
|
11-25-2009, 07:39 AM | #97 | |
Second Lieutenant
74
Rep 268
Posts |
Quote:
|
|
Appreciate
0
|
11-25-2009, 08:15 AM | #98 |
Major
199
Rep 1,457
Posts |
Well as I explained. I agree with jeremy, it is just I simply didn't think intake is at athmospheric pressure.
__________________
|
Appreciate
0
|
11-25-2009, 08:23 AM | #99 | |
Banned
79
Rep 5,970
Posts |
Quote:
If the velocity coming into the intake scoops is high enough at speed, it could be slightly higher than atmosphere, I guess. Either way, it's lower at the inlet side of the turbo than it is at the beginning of the intake tract. |
|
Appreciate
0
|
11-25-2009, 09:39 PM | #102 |
Banned
91
Rep 3,070
Posts
Drives: A boring one...
Join Date: Oct 2008
Location: Australia
|
All I want to see is a dyno showing stock intake vs the closed...
|
Appreciate
0
|
11-25-2009, 10:00 PM | #103 |
Private First Class
2
Rep 145
Posts |
|
Appreciate
0
|
11-26-2009, 06:46 AM | #104 |
Second Lieutenant
4
Rep 226
Posts |
Lmao ,that dyno sheet is a joke. Its very simple strap a car down bone stock and make 3 pulls.Cool car back down while you switch your intake on the car and make 3 pulls.Then you overlap dyno graphs.
|
Appreciate
0
|
11-26-2009, 07:13 PM | #106 |
New Member
1
Rep 26
Posts
Drives: 2017 X3 35i
Join Date: Jul 2009
Location: Edmonton, Alberta
|
I would be interested to better understand the affect on the off-the-line torque.
I tinkered with CAI's on the new gen Mustang, V6 and V8, Mazdaspeed3 and VW Jetta. Without fail, CAI's had a dramatic affect on low end torque. You lost it. There may have been gains at the top end but if there were, when would you ever see it in practical terms. The voodoo surrounding most CAI's is significant and millions are spent on little or negative gains. To each there own and I am not commenting on what anybody else wants to do. If there was such a CAI that retained the factory torque curve or did better, then that would be of interest. At least on the Mazda and Jetta, the turbo's spooled up very quick with a CAI. It was just not worth the loss of the off the line grunt to me. |
Appreciate
0
|
11-29-2009, 09:29 PM | #107 |
Streifenden Komet
9
Rep 120
Posts
Drives: 525i was a 325is
Join Date: Aug 2006
Location: Ft.Myers/Orlando Fl
|
bump?!? any response guys?
|
Appreciate
0
|
02-05-2010, 02:42 PM | #109 |
Waking up from hybernation
10
Rep 102
Posts |
Wow, $1500 for intake charge pipe and bov? What a bargain where do I sign up? In all seriousness unless this thing blows the competition out of the water and produces some major gains I really don't see how you can justify that price tag.
(Patiently waiting for results) |
Appreciate
0
|
02-05-2010, 04:17 PM | #110 | |
Captain
205
Rep 785
Posts |
Quote:
|
|
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|