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  #1  
Old 02-03-2011, 07:42 AM
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Bonestock Bonestock is offline
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Thumbs up Gene's DIY CAI thread

Hey guys, while Gene aka 92 SVX was over working on his interior wrap project I spotted a very nice and cost effective mod he had made to his car. A low cost cold air intake (CAI) made from off the shelf parts found at your local parts store. I believe the total cost is around $75??

I have now dubbed his intake the "GDIY" (pronounced Gee-dee) mod I am hoping I can encourage him to do up a "how too" with at least the part numbers needed to copy his work....

Here ya go Gene.. your very own mod. You deserve it because its simple, cost effective and a classic case of hot rodder ingenuity.

C'mon Gene!
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Last edited by Bonestock; 02-11-2011 at 07:11 PM.
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  #2  
Old 02-03-2011, 08:57 AM
92 SVX 92 SVX is offline
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Re: Gene's DIY CAI thread

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Originally Posted by Bonestock View Post
Hey guys, while Gene aka 92 SVX was over working on his interior wrap project I spotted a very nice and cost effective mod he had made to his car. A low cost cold air intake (CAI) made from off the shelf parts found at your local parts store. I believe the total cost is around $75??

I have now dubbed his intake the "GDIYCAI" (pronounced gid-dy cah-eye) I am hoping I can encourage him to do up a "how too" with at least the part numbers needed to copy his work. OK, the name might need some work...

Here ya go Gene.. your very own mod. You deserve it because its simple, cost effective and a classic case of hot rodder ingenuity.

C'mon Gene!
Thank you, ok I will attempt to explain it though Im better at doing then explaining.
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  #3  
Old 02-03-2011, 10:31 AM
92 SVX 92 SVX is offline
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Re: Gene's DIY CAI thread

Ok Here it goes.

First I started by cutting out the Accordion section of the stock tube, for 2 reasons first it allows lots of movement, and second using smooth walled tubing should help air flow.

I cut it as close to the idle control nipple as I could and still put a silicon coupler on you can cut it with a hacksaw. I think I used tin snips. I used a 3" silicon coupler from oreilly's. Part # 8771
$7.99 needs 3 for my setup. I also needed to heat it up just a little to open enough to go on.
Then into that goes a 22 degree bend part #8728

at $11.99. This will connect to a 4" straight piece part #8708 using the clamps that come with all these pieces $8.99

Which then connects to a 45 degree bend


Part #8738 $11.99. Using the second of the silicon couplers this attaches to the stock MAF again needing some heat to fit. Then maf adapter part number #81413 $13.99

Discarding the plastic piece as it is for a smaller diameter piping. You will need to line up the inside and drill new holes to fit your maf.
Then the maf adapter couples to the 90 degree bend part #8698 $10.99

Then that attaches to a 6" straight part #8718 $9.99

Then put your filter on the end. I had a filter so that was not included in the price but if you need one part #8136

cost $24.99
With out the filter it was $91.99 A little higher then my initial estimate.
That is what I did as I pieced them one at a time if you want you can get the short ram part # 8208 for $39.99

comes with one coupler and 2 4" and the 45 bend which means you would only need the 22 bend the 90 and 2 couplers. You do need a straight piece inside the fender but the 4" may be enough I had the 6" so that is what I used.
Using the Short Ram without filter its $78.95

Last edited by 92 SVX; 02-03-2011 at 10:38 AM.
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  #4  
Old 02-03-2011, 10:40 AM
92 SVX 92 SVX is offline
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Re: Gene's DIY CAI thread

I also went and did the crank case breather mod.

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  #5  
Old 02-03-2011, 11:21 AM
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Re: Gene's DIY CAI thread

Nice, great write up Gene!
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  #6  
Old 02-03-2011, 03:26 PM
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Re: Gene's DIY CAI thread

I wonder if this is a direct fit to our stock MAF?

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  #7  
Old 02-04-2011, 05:53 AM
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Re: Gene's DIY CAI thread

I have been looking on ebay for any CAi's that look as though they have a similar layout to the SVX.

Back in my Fiero days, it was discovered that a CRX CAI was a direct fit on a Fiero V6.
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  #8  
Old 02-04-2011, 09:47 AM
dennyo dennyo is offline
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Re: Gene's DIY CAI thread

Looks good gene. What's the purpose of the tube on either side of the maf? just a bypass?
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  #9  
Old 02-04-2011, 10:29 AM
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Re: Gene's DIY CAI thread

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Originally Posted by dennyo View Post
Looks good gene. What's the purpose of the tube on either side of the maf? just a bypass?
Yes a bypass, I read on here a member did that because the stock maf is the limiter this will allow some unmetered air at wot supposed to give a small boost in power. I thought it isnt hurting why not.
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  #10  
Old 02-04-2011, 05:13 PM
Lookin4SVX Lookin4SVX is offline
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Re: Gene's DIY CAI thread

I used a 94-97 Honda Accord Cold Air Intake off ebay on my 2001 impreza RS.



I just sawed off that last bend on the end that I didn't need.







Holding this pipe in my hand has me thinking...
If I was to take it and flip it over.. would it .. maybe?


hmmmm.. photochop says maybe... if my svx wasnt parked under a snowbank...

Last edited by Lookin4SVX; 02-04-2011 at 05:16 PM.
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  #11  
Old 02-04-2011, 06:26 PM
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Re: Gene's DIY CAI thread

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Originally Posted by 92 SVX View Post
Yes a bypass, I read on here a member did that because the stock maf is the limiter this will allow some unmetered air at wot supposed to give a small boost in power. I thought it isnt hurting why not.
Are you running a higher pressure fuel pressure regulator?
Without it you will be running way lean, at the lower RPMs.
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  #12  
Old 02-04-2011, 08:18 PM
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Re: Gene's DIY CAI thread

Quote:
Originally Posted by Lookin4SVX View Post
I used a 94-97 Honda Accord Cold Air Intake off ebay on my 2001 impreza RS.



I just sawed off that last bend on the end that I didn't need.




Holding this pipe in my hand has me thinking...
If I was to take it and flip it over.. would it .. maybe?

hmmmm.. photochop says maybe... if my svx wasnt parked under a snowbank...
Funny you mention the Accord. I was looking at the 90-93 Accord CAI on ebay. For $40 it may be worth a try!
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  #13  
Old 02-04-2011, 08:35 PM
92 SVX 92 SVX is offline
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Re: Gene's DIY CAI thread

Quote:
Originally Posted by svxfiles View Post
Are you running a higher pressure fuel pressure regulator?
Without it you will be running way lean, at the lower RPMs.
Will running lean cause higher fuel consumption? It seems no matter what I do I can not get this thing to get better then 22-24 highway mileage.
The bypass has only been on 5-6 days I can just plug the holes. I am not running any higher pressure fuel at the moment. A mod I have been thinking about but not ready to get into.
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  #14  
Old 02-04-2011, 08:47 PM
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Re: Gene's DIY CAI thread

Quote:
Originally Posted by 92 SVX View Post
Will running lean cause higher fuel consumption? It seems no matter what I do I can not get this thing to get better then 22-24 highway mileage.
The bypass has only been on 5-6 days I can just plug the holes. I am not running any higher pressure fuel at the moment. A mod I have been thinking about but not ready to get into.
About 100 years ago (around 2001) Mychailo did some testing with an actual WIDEBAND! And found out that the A/F ratios were very lean at idle and very rich at high RPM.
I was already running a higher pressure fuel pressure ratio regulator from an 2000 Legacy, (43.5 as I remember, compared to our stock 36.3 psi) and I "felt/tested" some improvement in accelleration!
He, Mychailo came up with the bypass mod which worked in conjunction with the higher PSI FPR to make a flatter, better A/F ratio for more better power.
This mod is probably better for the SVX people who cannot just buy a chip that adjusts the timing for evan better results!
__________________
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The first SuperCharged SVX,
the first 4.44 gears,
the first equal length headers,
the first phenolic spacers,
the first Class Glass fiberglass hood,
the first with 4, 4.44s in his driveway


Fiberglass Hood thread
My locker
4.44 Swap link
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  #15  
Old 02-05-2011, 06:12 AM
92 SVX 92 SVX is offline
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Re: Gene's DIY CAI thread

Quote:
Originally Posted by svxfiles View Post
About 100 years ago (around 2001) Mychailo did some testing with an actual WIDEBAND! And found out that the A/F ratios were very lean at idle and very rich at high RPM.
I was already running a higher pressure fuel pressure ratio regulator from an 2000 Legacy, (43.5 as I remember, compared to our stock 36.3 psi) and I "felt/tested" some improvement in accelleration!
He, Mychailo came up with the bypass mod which worked in conjunction with the higher PSI FPR to make a flatter, better A/F ratio for more better power.
This mod is probably better for the SVX people who cannot just buy a chip that adjusts the timing for evan better results!
I plugged them I am getting the ecutune stage 1 so it would appear I would not need the bypass presently.
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