opinions on intake idea

mp5

Member
I'm trying to do things on the super cheap and want opinions on this idea. Does anyone think there is any gain to be made by cutting a 3' hole in the side of the stock air box and running duct work to the opening that leads to the front wheel well to draw in colder air? I can pick up the duct work from home depot for about $5.00.

I meant 3 inches not 3 feet.
 
in stead of cutting a 3" hole in the stock airbox, just remove the front snorkle bits and attach your hose to the hole there
 
To make a relatively cheap CAI (overall about 50 bones):
1. Remove stock airbox.
2. Put a rubber connector on the tube leading to the airbox and onto some piping.
3. Run PVC (or any heat resistant, durable material..also aluminum dryer turbing) about 3" in diameter down towards the splashgaurd (depending on how low you want it to hang, be wary of water ingestion).
4. Connect a filter to the end of the piping. (K&N Part# RU3130 will work for ~3" - $40)

Tada.

Hm, for a more troublesome version of this, but replaces all of the stock intake piping: http://forum.protegemp3.com/vbb225/showthread.php?s=&threadid=3812
 
I've always been interested in home made intakes versus "aftermarket" designs...I wish some would dyno a p5 or mp3 or BOTH!...for baseline....then the most popular aftermarket intake and then the best/most favored homemade design...all under a controlled environment while trying to keep as many factors the same...that would be very interesting...or even at the track...although it can be difficult to keep all the variables under control.
 
herarety,

Are you saying to leave the and all stock pieces between the MAF and the throttle body and then run tubing from just the MAF to the front wheel well? I like that idea, it shouldn't cost much more since i intended to get a K&N drop in filter anyways and would probrably be more effective. Thanks.
 
herarety said:
To make a relatively cheap CAI (overall about 50 bones):
1. Remove stock airbox.
2. Put a rubber connector on the tube leading to the airbox and onto some piping.
3. Run PVC (or any heat resistant, durable material..also aluminum dryer turbing) about 3" in diameter down towards the splashgaurd (depending on how low you want it to hang, be wary of water ingestion).
4. Connect a filter to the end of the piping. (K&N Part# RU3130 will work for ~3" - $40)

Tada.

Hm, for a more troublesome version of this, but replaces all of the stock intake piping: http://forum.protegemp3.com/vbb225/showthread.php?s=&threadid=3812

Sounds good EXCEPT the PVC. DO NOT USE PVC, it can release gases that will kill your engine.
 
I know that big_ben sells the intakes powdercoated and all for a very reasonable price. You may want to contact him or check out the for sale section.:D

I am unsure about his pricing but I know its considerably cheaper than other after market offerings and just as good in quality:D
 
info please

i am planning on designing a CAI. i have an engineering background and a firm grounding in aerodynamics and fluid dynamics. i also have a few principles that i'd like to play with. i also have a solid theoretical knowledge of engines. what i don't have is knowledge of any of the computerized engine systems. could somebody please tell me exactly what a mass air flow sensor does and how it works. what type it is (i've done some research but can't really make heads or tails of it). same with the air temp. sensor. i believe these are the only sensors involved with an intake. if i missed something please tell me that too.

thanks,
 
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