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5.0L Talk | 5.0L Tech | 94-95 Tech | 1979-1993   1994   1995   Upload Pictures | Timeslips | Power Adders | Mustang Tech 


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Unread 05-12-2010   #1 (permalink)
RLG34750
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Default DIY Cold Air Intake.....

Homemade Cold Air Induction


Making a homemade cold air induction is pretty easy.

Parts needed from the local hardware store......

3 inch PVC pipe (around 3' long)
45 angled elbows
two 3 inch rubber hoses
4 clamps
PVC cement

If you have have an 87-93 Mustang, you will have it pretty easy from here on. If you have 94-95 Mustang, you will need to use a Mass air meter from a 87-93 Mustang,

Remove the old airbox (if you still have one) as well as the intake hose and the MAF. You will then want to measure the distance from the throttle body to the fenderwell so you can cut down the PVC pipe.

The PVC pipe will generally be around 20 inches, plus the 45 elbow (that is if you are not planning on running it into the fender). Test try everything before you glue any parts. Now you will need to reinforce 2 spots on the pipe, the TB side and sensor locations. To do this cut both ends of the 2nd elbow, you will then have two "rings", glue the first ring to the end of the pipe. The second ring you should cut open on the side, add the glue to both ring and pipe and place it 3" inches after the first one.

Drill 2 holes, one for the crankcase ventilation and the other for the Air Charge Temperature sensor (ACT/IAT). To connect the Crankcase ventilation use a copper hose connector and a 1" clamp we found at the plumbing section. The ACT sensor is installed in the second hole, make the hole big enough for the sensor to screw into the pipe, enlarge it a bit at a time so the sensor is held tightly in place.

After this step, sand the Cold air pipe. It's very important to sand since the paint might not stick to it. Now the difficult part, making the MAF ADAPTER. Here you have several choices, one would be to use a 3" to 3" rubber tubing that you can get in the RV section of any harware store. Simply hook one end to your mass air meter and the other end to your Conical K&N airfilter.

Now that you have your mock up finished, go ahead and paint the tubing any color you want. If you want your airfilter to be in the fenderwell (this is the preferred method), you may need to do a little cutting of the sheet metal. It all kind of depends on the size of your filter.


When using one of K&N's largest filters you may have to trim back quite a bit but when using the smaller filters, the filter usually will just slip through the existing hole. You will need to use a 45 elbow for this or plan it ahead to where it angles perfectly into the fender. If you are doing this on a 87-93 Mustang (or a 94-95 with an 87-93 upper intake), you will need another 45 elbow to hook it up from the throttle body to the PVC pipe. Once you get everything put togeather it should all look pretty nice and will feel quite a bit quicker in the upper RPM range...

Plus you will have a small hiss coming from the engine bay if you are using a large fenderwell mounted filter (some love this and others hate it, kind of depends of if you like the hiss of a supercharger... .

These instructions aren't the greatest, but use your imagination and you will figure it out......


The perfect weekend low budget project.......
 
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Unread 05-12-2010   #2 (permalink)
spdjnky_42 is offline SHELBY GT 500 Member

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LMAO I did that in my 92 lx worked great. Word of advice paint the pCV white with blue cement/primer looks like crap!
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Unread 05-12-2010   #3 (permalink)
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Its not a Anderson Powerpipe but it will get the job done.....
 
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Unread 05-12-2010   #4 (permalink)
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the pvc is that hard plastic from home depot right? will get hot and melt? i was thinking of doing that with my car because im not into paying $160 for a chrome pipe. cai doesnt look hard to fabricate at all...thanks
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Unread 05-12-2010   #5 (permalink)
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Yes that's PVC...
Reg where are the pics of this contraption?
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Unread 05-12-2010   #6 (permalink)
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Im interested. I have a cowl now, but I like this idea a lot :p

It will go directly to my carb. Not sure this would improve a non emisions set up much, but maybe.

PVC is pretty tough, underhood temps wont melt it. What about ABS? Too heavy?
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Unread 05-13-2010   #7 (permalink)
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Not too sure that will work on a carb unless its one for forced ind.
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Unread 05-13-2010   #8 (permalink)
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Scheduled 40 is not going to melt
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Unread 05-13-2010   #9 (permalink)
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never mind the nitrous,THIS must be his secret for running 9's...
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Unread 05-13-2010   #10 (permalink)
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a 3" pipe feeding a MAF that is less than 60mm..............hmmmmm

At least the SN MAF is 70mm...........
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Unread 05-13-2010   #11 (permalink)
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Quote:
Originally Posted by need4spd90 View Post
never mind the nitrous,THIS must be his secret for running 9's...

NO.................

The secret to running 9's is not having a B-cam......
 
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Unread 05-13-2010   #12 (permalink)
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damn you.......
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Unread 05-13-2010   #13 (permalink)
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damn you.......
you should have known that was coming.....
 
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Unread 05-13-2010   #14 (permalink)
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BTW- you can replace the PVC with 3" exhaust pipe. A little heavier, but might look a little better than looking like you found your CAI at a junk yard.
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Unread 05-13-2010   #15 (permalink)
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Quote:
Originally Posted by 302Feen View Post
BTW- you can replace the PVC with 3" exhaust pipe. A little heavier, but might look a little better than looking like you found your CAI at a junk yard.
FAIL... Talk about NOT cost effictive lol... Labor $ just to weld.. Might as well pay the expensive $ for the Anderson pipe....
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