DIY Cold air intake

[Dragonational]

I am thinking of modifying the air box to take a 3 inch pipe.  I will try a mock up to show you guys but it may take some time.

[Gary Wells]

Regarding the Big Mouth intake, I feel it is better for a street driven car to take in a lower ambient temp then the under hood temp.

[Dragonational]

you would think that if the air is colder coming to the turbo then it would be colder going out.  It might not n=make that drastic of a change but small changes are a start.

[Gary Wells]

you would think that if the air is colder coming to the turbo then it would be colder going out.

[Top Speed]

you would think that if the air is colder coming to the turbo then it would be colder going out.

[granitestategn]

I have a big K&N in the engine compartment by the canister right now.

[Dragonational]

I have a big K&N in the engine compartment by the canister right now.

[Gary Wells]

There is another cold air system on the market that is pretty well respected. It is called the "Tinman" cold air system. I do not know who makes it or what it costs.
Might be worth looking into if you are going to go the cold air system. I am uncertain as to what I am going to do.

[ledzeppac]

If your gonna do anything DIY do an alcky kit...

[Gary Wells]

I copied this from that thread. I thought that this was posted by Nick Micale, but this was posted by "Woody" who, passed away about 2 weekd ago. He was a hell of a racer, and probably still is.
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   #15  
azgn
Registered User
 

Join Date: Sep 2000
Location: scottsdale az
Posts: 140  I have run tests with an underhood filter vs outside ram air & no filter and there wasn't enough difference in MAT temp (after the turbo, measured in the plenum) to matter....a degree or two at most per the FAST (mid 10 sec car)

99% of the heat added to the charge air is done so by the turbo and most of what is taken out is done so by the intercooler (so outside cooler air DOES matter....but only with regard to the efficiency of the IC)

these tests were done at a race track and everything was cooled to ambient (like about 90* here in AZ)....there "may" be some gains on a street car

I have a hunch all that plumbing may inhibit airflow also....I am sticking with a straight shot underhood open & big cone filter (with outside air blown on it via 4" pipe under airdam)

for those running alky, there is absolutely no reason to worry about IAT ahead of the turbo
______________ ____
Woody

Basic TSM recipe 24 lbs boost

[granitestategn]

I'd have to agree with Woody's comments. He did say he channels fresh air from under the air dam to the filter. As long as the pipe size is big enough, your restriction shouldn't be too bad with the Big Mouth or something like it. Remember that Woody's car moved ALOT of air.

RIP Woody.

[Gary Wells]

What impressed me the most is that Steve Wood, whom I have the utmost admiration for, and Dan, (Grumpy) all agreed with him.

[87natty]

I guess it's like throwing frozen cookie dough and thawed cookie dough in the oven. Either way, the oven is still pre-heated.

[ledzeppac]

I agree waste of money... just get a $40 KN

[Top Speed]

I've got a 3" chrome MAF pipe and a 14" K&N for sale if anyone wants it.

(Tried to add a pic but it wouldn't show it.) Let me know and I can email you a pic of what it looks like.