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Old 09-24-2009, 05:26 PM   #1
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modded factory intake



DISCLAIMER: I HAVE NO CLUE IF ANY OF THESE MODS TO THE FACTORY INTAKE DOES ANYTHING TO INCREASE PERFORMANCE. I NEVER DYNO TESTED ANY MODS SHOWN HERE. PLAY AT YOUR OWN RISK!!!!!














1) charcoal filter (aka secondary filter) removed.

2) main paper filter left in place, for now.

3) eliminated factory rubber flex tube (3" in /2.5" out) and replaced with
custom 3" in/out rubber elbow. No more ribbs and no neckdown.

4) removed huge resonator before TB and replaced with
hacked up 3" tube leftovers from my Prelude =)

Hardest job so far... figuring out how to eliminate the factory rubber flex tube and custom making the replacement part. More to follow, including breather filter and/or catchcan setup, along with butt dyno and review/impressions of my new (and first) modd.
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Old 09-24-2009, 07:23 PM   #2
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pretty sweet man im interested to see how it all works out. i almost bought one of those sensor adapters and constructed an intake but i was too broke.
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Old 09-24-2009, 07:28 PM   #3
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When I took my intake off to install the DT headers it made me think about how well a setup like that would work. I'm interested to see what the butt dyno and mpg results are.
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Old 09-24-2009, 10:19 PM   #5
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thanks everyone.

I started out on a 1-2 hr. charcoal filter delete mod, but I just couldn't put back all the factory mess.

lucky for me, all the parts were already sitting in my garage. (I think I could build a entire car with all my unused stock and aftermarket Prelude parts...hehe.)

I love fabbing/designing kool stuff for my cars - just very time consuming.
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Old 09-26-2009, 12:39 PM   #6
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Old 09-26-2009, 01:22 PM   #7
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got some ?'s



--- the 2 couplers you used, they are both 3" straight?? (throttle body inlet and air box outlet are 3" diameter??)

--- your prelude tube basically looks to be a straight piece w/ a 90* bend in it, yes??

--- what did you do with the sensor on the back of the resonator assembly that sits above the valve cover??
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Old 09-26-2009, 07:50 PM   #9
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pretty cool man...good job
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Old 09-26-2009, 08:09 PM   #10
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Quote:
Originally Posted by willis View Post
got some ?'s



--- the 2 couplers you used, they are both 3" straight?? (throttle body inlet and air box outlet are 3" diameter??)

--- your prelude tube basically looks to be a straight piece w/ a 90* bend in it, yes??

--- what did you do with the sensor on the back of the resonator assembly that sits above the valve cover??
Any performance gains with this mod?
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Old 09-26-2009, 09:24 PM   #11
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Quote:
Originally Posted by willis View Post
got some ?'s



--- the 2 couplers you used, they are both 3" straight?? (throttle body inlet and air box outlet are 3" diameter??)

--- your prelude tube basically looks to be a straight piece w/ a 90* bend in it, yes??

--- what did you do with the sensor on the back of the resonator assembly that sits above the valve cover??
The one on the left looks like a 3" to 2.75" reduction, although his post says they're both 3".
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Old 09-27-2009, 08:30 AM   #12
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Quote:
Originally Posted by willis View Post
the 2 couplers you used, they are both 3" straight?? (throttle body inlet and air box outlet are 3" diameter??)
the TB inlet is approx 2.5" ID (or 2.75" OD), same as the Prelude. the aem coupler reduces from 3" to fit the TB.

the other coupler at the airbox outlet is 3" on both sides and has about a 15* bend.

Quote:
your prelude tube basically looks to be a straight piece w/ a 90* bend in it, yes??
no. the original prelude aem cai was hacked into several pieces to fit the blower, see pic below. far left (not shown) is another 90* bend that heads downward into the fender.




Quote:
what did you do with the sensor on the back of the resonator assembly that sits above the valve cover??
I made a bracket for it that mounts to the VC. I'll post up a pic later, but I think I may be having issues with that sensor, or something else I moved, removed or changed I'll explain later.
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Old 09-27-2009, 08:37 AM   #13
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Quote:
Originally Posted by crawl View Post
... I'll post up a pic later, but I think I may be having issues with removing that sensor from the intake tube. I'll explain later.
please keep me (us) updated!

by deleting the resonator, did you get that classic "intake" sound??

** edit **

and i would love some more pics of the current set-up if you wouldn't mind ... trying to see the shape of the tube
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Old 09-27-2009, 09:00 AM   #14
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Quote:
Originally Posted by otter View Post
The one on the left looks like a 3" to 2.75" reduction, although his post says they're both 3".
I'll try to describe it more accurately...
the factory airbox outlet is almost 3.25" OD. the 3" in/out rubber coupler was heated and stretched to fit over the airbox outlet. then it's 3" all the way until the TB, where the coupler is reduced from 3" to 2.75" to fit the TB.
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Old 09-27-2009, 09:08 AM   #15
crawl [OP] crawl is offline
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Quote:
Originally Posted by willis View Post
please keep me (us) updated!

by deleting the resonator, did you get that classic "intake" sound??

** edit **

and i would love some more pics of the current set-up if you wouldn't mind ... trying to see the shape of the tube
it has a better tone, more throaty at WOT, but very mild compared to most intakes I've heard.

I'll post more pics of the completed setup later.
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Old 09-27-2009, 09:12 AM   #17
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Quote:
Originally Posted by meteoraman2514 View Post
pretty cool man...good job
thanks bro. but hold off on the props until I get this thing working right, or I may be going back to stock
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Old 09-27-2009, 09:20 AM   #18
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Quote:
Originally Posted by dorifuto View Post
My buddies always wrap their intake tubes with header wrap to keep the engine heat from conducting into the tube and causing your incoming air to heat up. Header wrap is pricey, like $50, but it helps. Maybe you should try it it out...
yeah, I've seen it too and thought about it, just pricey like you said. thanks for the tip though.
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Old 09-27-2009, 09:27 AM   #19
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Quote:
Originally Posted by ttylerr View Post
looks awesome!
subscribed!
thanks man. but I have a few issues with it, so I'm kind of depressed right now (after all the time invested).
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Old 09-27-2009, 11:02 PM   #20
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new pics added to page 1.
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