So,

After having the DDM Works intake installed on the car for over a year, I took it off and ran some temperature numbers using the stock intake with simply a K&N panel filter. Here are my results/numbers (All taken using a Scangauge II):

With the DDM Works Intake:
IAT @ 70mph: ~7-8 degrees above the ambient temperature
Time to recover after a hard run: It usually took about 10-15 minutes of constant speed driving for the temps to stabilize back to about 7 degrees above ambient.

With the Stock intake and K&N:
IAT @ 70mph: ~2-3 degrees above ambient temperature
Time to recover after a hard run: It usually only took several minutes for the IAT to plumment, and about 5 minutes to bottom out at about 4 degrees above ambient.

-I think the "ram air" tube on the stock unit helped tremendously. The strange thing is that the DDM uses the bottom half of the stock intake, and I left the ram air tube in place. I can only imagine how hot the folks running ALTA intakes without the stock ram air tube are running. I ended up going back to stock because the numbers were sooo much better. Yes, I will miss my turbo blow off sounds, but I still get some of that with the K&N. Also, I can actually hear my exhaust now. GO INVIDIA! Anyways, I plan on drilling some holes in the grille slats on the side where the air inlet hose is to the intake box to see if I can get more air in, thus lowering my recovery time. I might also try thermal wrapping the intake tube to keep temps within the plastic tube as low as possible. We shall see. I will try to post back any further results I can come up with. Any other ideas/suggestions are appreciated!

 

good to see some real numbers. thanks mate.

 

So the air from the DDM pulling straight from the hoodscoop was hotter than the stock intake pulling air from the hoodscoop and hot engine compartment?

Can that be right? Cause at best, wouldnt' both intakes be pulling the same temperature air from the hood scoop?

 

Good work, thanks for sharing.

I'll probably run a k&n drop in also. I wonder if replacing the turbo inlet pipe would help anything.

On a side note, you'll probably get better air fuel ratios on stock set up because of maf placement.

Cheers

 

It does not pull from the hood scoop. I do not have the race system. That system is SCARY. The hood scoop is very important in allowing hot air to vent from under the hood caused by the turbo, and the race system closes off the scoop. The stock system has an inlet pipe next to the driver side headlight that forces cold air into the bottom of the intake box. Also, it does not use any engine compartment air. The heat from the engine does affect it, but not so much as an open air system.

 

As a side note, a buddy of mine put the JCW inlet pipe on his and has not seen any real improvements. Also, the ALTA one is horrible. It does not fit well, and can cause a CEL due to a vacuum leak near the breather tube.

 

Yeah I just did a little research and it looks like your right. I think I'll leave it alone and spending my money elsewhere.

Thanks

 

Not all turbo cars have hood scoops to vent heat. Having the DDM race system I can say that it still allows some heat to vent. If you are really worried about this you can heat wrap and add a heat shield (check clearance with the under bonnet DDM scoop). The only thing I can say is I've had a couple of turbo cars and they haven't had scoops and they have done just fine.

 

Just remove the grille completely.

 

Hmm, I may have to try this with the DoS intake I just put in and one of the guys with stock intakes this weekend.

 

I forgot that to all S cars had "slightly" open scoops. Lol. Thanks for reminding me!

I just drilled holes into the closed section of the top grille. You can't even tell they are there unless you get down and look. I will post some numbers in a bit, after I see how well it works.

 

I would like to see how the DoS system does as I just ordered my CAI from them.

 

I'll be sure to do the comparo and post up afterwards.