These have been proven to be fine on the G37, which is even more open being the grille is in front of the filters.

I'm using Dyno Dynamics (known as the 'heartbreaker dyno'). It reads slightly lower than Mustang, even. From the information I've been able to find just by researching on the net, if you take a Dyno Dynamics reading and multiply it by 1.18, that gives you an approximate equivalent DynoJet number. Mustang Dynos read lower than DynoJet, but higher than Dyno Dynamics, and have a DD multiplier of 1.115. So if you wanted to convert my current DD reading of 291.7 whp to an approximate Mustang equivalent, multiply by 1.115 for a reading of 325.25. Conversely, if you want to convert RCZ's current Mustang reading of 278 whp to a DD equivalent, multiply it by 0.9 for a reading of 250.2. Note that all these calculations are approximate because the conversion factors are non-linear (i.e., they change as you go up and down the HP scale). Personally, I find the 250.2 number suspect, as we ran bullitt5897's bone stock 370Z on the same DD dyno that we ran mine on, and his car came in with 256 whp. I find it inconceivable that RCZ's car would pull less whp on that same dyno when he has the G3 intakes. I think this all just goes to show what an inexact science this can be when comparing different cars on different dynos, so we would be well advised to take this all with a grain of salt.

There's more info in this thread if you're interested -> http://www.the370z.com/vq37vhr/2199-...alculator.html

How about when you wash the car?

I want.. Is there going to be a group buy for this?

Or when combined with Mines Intake Air Scoop Type II?
Mines - Intake Air Scoop Type II Set, Dry Carbon

RCZ, Great write up and impressive results.
But I must say, these results were somewhat confounding based on your earlier dynos. You said that when you dyno'd with no filters, you saw no gains. Suggesting that air flow through the filter was not a limiting factor. Now however, you see 15-20HP gains with the long tubes. If the filters truly make no difference in HP gains, then we are led to believe that 20HP gains are to be made by rerouting the air to the throttle body through these tubes rather than the stock airboxes? Is the stock airbox design that poor/restrictive?
:confused:

Promising gains regardless of where they came from. I don't care if its some STILLEN black magic trick. This is a significant step toward the 300HP N/A mark.

No problems when washing the car.. and the Mine's scoops would be roughly the same open area as the G37 grille, if not less.

Water becomes an issue when you're submerging the filter, and revving the engine.. if you submerge the filters at the level they are and gun it, you're trying to drive through a river.. and that's not going to work on many levels.

Also the filter location being where it is versus down near the road also helps maximize the cool air pickup.. air coming off asphalt in any sort of warm weather can really effect the intake air charge..

Thanks for the reply! Makes sense!

The stock filters probably arent BAD...its their location, and the fact that a lot of engine bay heat can easily be brought in. Moving them outside of the engine bay is probably a fairly large improvement.

Knight,
the Intakes on the Z seem to be covered up in the front by the bumper and the metal bar plus foam.
on the G37, it's right in front of the grille and ppl drove it in the rain, nothing bad happened. Just dont floor it while it's raining heavily. there was only a little piece of plastic protecting the filters. if the G survived, i;m sure the Z can manage as well or even better.

i agree with josh with the water issue... as added note, if you decide to install the scoops you can also place it somewhat indirectly from the intake filters to have more confidence that it would not get water damage or get extremely soaked... :twocents:

however, after rethinking about the location of the filter in relation to the front fascia/bumper and chassis/foam, imo it will actually suck air from underneath the car or the air coming off the asphalt that is bouncing off the radiator... i cant find anywhere other paths the cold air can come in at...as such, i am thinking that if it is hot outside/at the track, this CAI will actually not be sucking cold air in... which kind of goes against what josh is saying and gives more reason to get the scoops...

my problem with this is that i dont like the scoops... so i think if stillen is in development of a front fascia body kit for the z... i think they should put in consideration to establishing better in flow coming from the top of the car/bumper... with that, i believe the 15-20hp gains will be easier to foresee... ( OORRRR ... just take out the foam that is blocking the air... but am no mechanic/engineer, which means i am not quite sure what the impact would be to the car)...

... all this thoughts will probably be answered after SEMTEX's dyno results... -Semtex, just in case my thoughts hold water... i think you should bring your shotgun and use it to put holes on your bumper and re-dyno the car... :tup:

I respectfully disagree as there are two radiator fans pulling-in and evacuating hot air out of the area where the filters reside. If you use your theory then the factory layout is even worse.

I believe that styrofoam block is actually part of the crash structure. Like it's there to absorb energy in the event of a collision, so taking it out probably isn't a good idea. As for the shotgun, I'll give it some serious consideration. :bowrofl:

Big Thank You! RCZ
 

Nice Posting and information/pictures for the intakes.

I'm sold. Good stuff :tup:

Hmm have a couple questions.

1) After install would be recommended to reset the ECU?

2) Is a tune necessary or beneficial after this mod i.e. will you see even more gains after a tune?