So i have been doing my research on some intakes. I really want the M7 AGS-R Cold Air Intake + Turbo Heatshield (R56) combo since u get the turbo heatshield too. But i had one question about the intake... will it get effected by rain?
Also, any input on alta's intake as well?

advise is greatly appreciated ^.^

thankyou.
<3

 

rain will not effect either intake, no worries there.

i would not get either the alta breaks and the m7 is just to expensive, take a look at ddm and their race intake system, its similar to the m7 and i havent heard anything but good reviews about it

 

I have not heard anything about Alta's CAI breaking? It's one of the more simple intakes for our cars. It's mostly for the sound that's all.

 

I've got no experience with the Alta or M7 intakes but I've got the DDM street CAI and I really like it. I did run into a little issue when I put in the M7 front strut support and brace. I had to cut the airbox so it would all get along together. Other than that, it's been great! My experience with other M7 parts has been first rate, even to the point of having Peter on the phone offering tech support.

 

for a performance boost check out defenders of speed cold air intake, it makes all the rest of the intakes on the market look stupid.

 

https://www.northamericanmotoring.co...-alta-cai.html

 

Do you have any documented evidence of this? Dynos, intake temps?

 

Have one installed myself.

Talk to Clint at DoS. He'll set you up.

Ask him for the article on Cowl air induction. In a nutshell the DoS pulls in air where it it available. DDM, Alta, etc, don't At speed hoodscoop is basically worthless airflow wise (assuming you are actually using it via the DDM or drilling holes)

 

DDM Race Intake System is the better alternative to the M7 system with the heat shield. But then again, how many times have intakes been debated...sigh.

I'm curious to see why one would render the use of the hood scoop by the DDM RIS to be not as effective as the DOS intake. Post the article please.

 

Happen to have it in my 'sent items' here ya go--

<snip>
The DoS CAI works on ram air principles derived back in the 60's. A great
forum that has looked into this in depth can be found here:

http://www.8thcivic.com/forums/bolt-...am-air-si.html

Here's the basics of how the intake works:

The DoS CAI has 2 inlet ducts -- 1 at the front of the car and one at the
base of the windshield. Both ducts allow for plenty of nice cold air
during low-to-mid speeds. At high speed, a high pressure zone is
established when the air flows up to the hood and hits the windshield
before flowing over the top and sides of the car. This high pressure zone
actually rams air into the large intake inlet far more effectively than a
front mounted scoop.

The main reason that I have issues with hood scoop-mounted inlets on the
R56 is that the front duct/vent should be used to allow the turbo to vent
heat at low speeds and aid in cooling it at high speeds/high RPM. Putting
a duct over the top of the turbo is not necessarily a great thing.

OK, all that being said -- The DoS intake is a bit throaty. You can read
more about that here:

https://www.northamericanmotoring.co...ke-review.html
<snip>

 

So the HP gains are about the same as the DDM RIS and some others, which again points that the debate over these intakes has gotten a bit crazy :-0

BTW thanks for providing the article!

 

I would think the dos provides a bigger gain than the ddm or m7 .The ddm and m7 draw air thru the scoop which is located above a very hot turbo.

I did a intake air temp reading on my dos on a 98 F degree day and the intake temp reading was 104 F.

 

That is really high at +6 degrees F. When I am running at >40 mph, my intake temp is +1 to +3 degrees F above ambient. I just have the JCW stage 1 intake and Helix IC.

When I am stationary, there is a lot of heat soak.

Stig One, any chance to give us an intake temp with DOS after a 5 Min idle as well.

 

the reading was at idle in bumper to bumper traffic.my car outside temp reading was 98 and we all know how the mini outside temp reads low.

 

At idle or bumper to bumper, the outside temp air going into the intake is not too important as the internal engine parts get really hot. The intake tube itself can heat up to >100 degrees F so does the cold side of the tube. So it heats up all the air going into the engine, hence lots of heat soak.

 

the maf reading was 104 .

 

Stig One, Thanks for posting all the temps readings.

 

When at speed (30+mph) my maf and outside temp readings are the same.

 

Still would be great to see some dynos comparisons on these intakes though. And some 0-60 mph and quarter mile times. Nothing like the info you get when rubber meets the road.

 

once the twin turbo viper is off the dyno i will do some pulls stock intake v dos intake.

 

Cannot wait.