Cold Air Intake

[zephyrus17]

The dyno charts from the autospeed test show only improvements at the sharp end of the rpm spectrum, around 5%. Low RPM has about the same amount of power/torque

And the problem with the ITG Cold Air Induction System is that it still takes in air from inside the engine bay. That 90deg bend at the beginning doesn't help things either

[Jace]

for 3/4 of the 0-100 run you are doing under 80kph

4/5ths perhaps?

[NitroDann]

Not in time.

2/10 for getting me to respond

Dann

[rxmx]

Intake I just completed for my bro's car.

Here is a before pic. Sucking up hot air, no room to go forward or go behind the headlamp due to the over rad piping.



New setup, got an inline air filter, lobstered the piping as I needed to manipulate the pipe more than just using standard bends to make it clear then routed it to the firewall. Ill be bending up a stainless Heat shield for the turbo next when I find the time to do so.









rxmx,

[slimx]

Look in my opinion. Longer just adds to your response time. Thats why people will say little to no gains (i assume).

When u get a short ram intake like my intakes.

1. No comment on the sound. Its just amazing.

2. Car feels much more happier to rev it does honestly increase response time.

3. Obviously anything aftermarket absorbs more air. Oem is crap. It has a tiny tube that runs down the bumper that brings in a quarter of the size of the actual intake. Which is 2.5" - 3" i think that tube is like what 1" from memory?

4. Our intake runs no where near the exhaust / headers therefore avoiding all the heat. It instead runs on the cold side of the engine where your intake manifold is.

5. Ofcourse an aftermarket air filter does bring in alot more air then a panel filter.

(excuse me if theres any errors wrote this on mobile phone)

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[CHRISTolo]

Do you get a dip in torque at around 4500 rpm?

Read from somewhere about the resonator chambers on the stock intake, something about smoother air flow.

Look in my opinion. Longer just adds to your response time. Thats why people will say little to no gains (i assume).

When u get a short ram intake like my intakes.

1. No comment on the sound. Its just amazing.

2. Car feels much more happier to rev it does honestly increase response time.

3. Obviously anything aftermarket absorbs more air. Oem is crap. It has a tiny tube that runs down the bumper that brings in a quarter of the size of the actual intake. Which is 2.5" - 3" i think that tube is like what 1" from memory?

4. Our intake runs no where near the exhaust / headers therefore avoiding all the heat. It instead runs on the cold side of the engine where your intake manifold is.

5. Ofcourse an aftermarket air filter does bring in alot more air then a panel filter.

(excuse me if theres any errors wrote this on mobile phone)

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[NitroDann]

Great fab work rxmx.

I like your tiny welds.

Whats your TIG setup for that?

30 amps low, 45 amps high, 50/50 split, 20 pulses per second...? Just guessing.

And no filler either?

Dann

[sailaholic]

Longer shouldn't add to your response time if the filter is already remote from your butterfly. Its still the airflow from the controlling point ( butterfly) to the cylinder that controls response.

A number of forum members and engine builders have actually found longer to be better based on empirical and theoretical testing.

Your statement on panel filters is also wrong. If you don't believe me go tell v8 and wrc teams they are doing it wrong. Assuming same material Of construction its surface area that makes one filter flow better than the other.


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[rxmx]

Great fab work rxmx.

I like your tiny welds.

Whats your TIG setup for that?

30 amps low, 45 amps high, 50/50 split, 20 pulses per second...? Just guessing.

And no filler either?

Dann

Thsnks Dann,

Im still using my $400 ebay 180P tig with Hf start i bought about 14months ago to learn how to weld on.

Yep no filler, just fused as the pipe wont be under any stress. I use low heat bout 22 amps, I only have 2 pulse settings on the machine 2 pp/s or 100, I use 100 pp/s. With the lower heat and pulse it will prevent the inside from oxidising(sugaring) so no back purging needed. You have to make sure all the pieces are nice and tight otherwise you will blow holes. I find once you get your puddle going, just do a slight zig zag between the two metals while you are welding them and it will fuse it nicely, ohh and make sure everything is super clean, otherwise you will get dirty welds. Usually go over everything with acetone, even the tungsten.

Hope that helps man

[NitroDann]

Thanks.
You must be moving slower than Id guessed, hence being able to control the width of the weld so well.

I do the acetone trick also.

thanks,
Dann

[93_Clubman]

So, Dann, if not FI, what's the best intake alternatives other than the AutoExe and method shown on autospeed, any other way?

Another approach:
http://ecommerce.mossmotors.com/p/miata ... ng/901-985

[slimx]

u mean a light kick just after 4k? definately.

[ralt]

Hi.
Interesting air intake sticking above the bonnet. What happens if it is raining heavily or you park your car nose up in very heavy rain. Maybe do not drive in the rain. As usual all bling no real r & d. I will stick with my Loch Stewart system thanks. The man knew what it is all about.

[olboy]

Has anyone seen a test using a remote temp gauge around the engine bay
I would think it would be good to know where the cool spots are while the car is moving and not on a dyno
Mr mazda might have known more than us when he put the standard intake where it is.

olboy

[sailaholic]

I will stick with my Loch Stewart system thanks. The man knew what it is all about.[/quote]

Should ask tbro about that, he had his loch intake modelled by a fluids engineer and found it to be a choke point above about 4k rpm from memory. He modified it then eventually threw it away.


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