I don't know if I believe that, just for the fact that it's no a real world test. I've seen the Alta, it's a nice piece of work, however, with the hood open it is exposed to a great deal more open air, and probably cooler air. Are you getting a massive HP increase from hood up? I doubt it, but I'd bet there's something extra going on. Hood up and hood down mean nothing to the stock box, but they do for the Alta, so that statement of valid difference is inherently incorrect.

 

flyboy2160,
You said our website says it uses the stock opening, this is true. No where did we say it is huge. I did say the "huge gapping hole" from removing the back wall. So besides the front scoop which is retained on both intakes, ours has the large (more like 5 times the size of the front scoop) hole from the missing wall.

You are right about the forge tests. The testing they did was perfect, and still the best way (IMHO) to dyno Intercoolers. But the fact that it doesn't fit with the scoop is a separate issue. All IC should fit with the scoop, kind of like all intakes should fit under the hood, and all swaybars should clear the springs. Dynoing thier IC back to back with others, with the hood closed is a good way to compare them, but not a good way to simulate real world air flow across the IC.

Again you are exactly right about the gain from the filter. One of our dealers Eurostyles East, just did a bunch of great comparos to show a 19% pulleyed car with stock air box, our panel filter, out intake minus the tube and the intake with the tube. The panel fitler runs show an average of 1WHP and 1Ft-lb of torque gained, using the stock box. At 6500 they saw a 4-5WHP gain. But everwhere else, it was 1HP. This shows that the intake minus the bottom isn't going to be much better.

Once again our stock WHP claim of 10-12 we have proven over and over again. With Euro styles east dyno runs last week, the 19% car with a chip gained 8WHP at 6200, and 14WHP at 7000. This was also with no IC!

We truely don't mind answering people questions, because like you see it as the guy beating us up, i saw it as a guy asking some good questions. That really is the hard thing to deal with Via email and forums. No matter how many smilies you put on the email, it can't always describe the tone of voice with the customer.

As for the hood up VS hood down,
Doing ovbiously the stock intake it doesn't matter, and ours you think would. But there is no specific fan blowing on the filter, just one on the IC. In fact it may be worse on the intake when the hood is up because the hot air from the radiator is being blow across the engine. Either way the HP numbers are much more consistant with the hood open purely for the benifit of the IC not the intake. Like i said before the fans that most people use for cooling the engine down, work just fine for that. But they are not good enough to mimic the air flow the IC would see driving down the road. Just using the normal fans (hood closed) during the runs will make the IC heat soak causing the numbers to get worse and worse the more runs that are done.

When driving down the road your car doesn't get slower with each gear change. This is because the wind speed gets higher and higher cooling the IC more and more.

The next time we do a HP run with the intake we will be putting something over the top just to eliminate anyone from thinking there is an advantage.

What about that most all aftermarket intakes are tested with the hood open, doesn't that make the playing feild somewhat even when comparing them?

 

Getting the 52 cent shoe laces should settle this question once and for all!

 

Alta, What was the difference between the dyno numbers "with and without" the silicon tube?


Thanks John.

 

I'll second the pulley.

Unless the stock intake is severely restricted (well the stock one is ok, won't set the world on fire) so that's why there's minimal gain to be found. Another thing is, the stock map isn't too bad so that's probably again, you can't feel much of a difference.

Stick a pulley in, reprogram the Unichip with the correct map then you'll be flying

Another thing I can think of is..maybe the person in question isn't so sensitive to hp gain but can you at least felt your MCS is a bit more responsive and not as laggy down low?

 

XTREEM,
We just made a post with a 19% pulley car with and without the tube. This car made an extra 5WHP and 2 ft-lbs of torque with the tube. This proves that the larger ID of our part does work.