: Homemade CAI *update*



Got5onit
02-24-06, 02:42 PM
For those of you going the homemade air intake route, 4" AL tubing will fit.

It is a tight fit, but there is plenty of clearance between the engine and tubing.
However, it will barely touch on the right radiator bolt. Nothing to worry about, IMO.

Be prepared to trim the 90deg elbow. I had to take off quite a bit on both ends.
The transition hose from the tubing to the MAF was purchased from boostcontroller.com. It is a 4" to 3.5" reducing hose.
Painted the aluminum tubing with silver high temp Ceramic paint.

PN's:

purchased these from airflo.com
90deg elbow 4" --> 90HL4SL
4" hose clamp --> AF-400 I recommend buying 3 of these
3.5" hose clamp --> AF-350 need only 1
4" AL intake tubing --> AL4

purchased this from boostcontroller.com
silicon reducing hose 4" to 3.5" --> ASCR3-X

Duplicolor High Temp Engine Ceramic paint --> purchased at local AutoZone
K&N Panel filter -> 33-2649

When installing, make sure the clamps are not tightened until everything is in and aligned properly. With the limited space, it was much easier doing it that way.


http://image.photobucket.com/albums/v428/AFJsvt/IMG_3025.jpg

http://image.photobucket.com/albums/v428/AFJsvt/IMG_3026.jpg

nikon
02-24-06, 02:43 PM
part #'s please....looks good.

roadracerx72
02-24-06, 02:59 PM
I'm interested. Looks REAL good!!

urbanski
02-24-06, 03:00 PM
nice.
dump the engine cover :)

10secvette
02-24-06, 03:49 PM
Now the real question is, how are you getting cool fresh air to the box?

jspridge
02-24-06, 04:23 PM
Awesome. Please post the part number and source for that reducing hose. The hump hose supplied by Air-flo was too big to fit between the radiator bolt and the pulley on the front of the engine. The part you found is exactly what is needed to do this job correctly. Nice find!

Got5onit
02-24-06, 05:02 PM
Now the real question is, how are you getting cool fresh air to the box?

Through a K&N drop in filter. I contemplated removing the front snorkel, but decided not to since it has the front opening and another side opening to breath.

Got5onit
02-24-06, 06:12 PM
PN's added to original post.

thefly
02-24-06, 08:47 PM
out of curiosity why the 4" tube?

Got5onit
02-24-06, 10:08 PM
out of curiosity why the 4" tube?

Long Story. :alchi:

Short version:
The original CAI was intended for an open element filter. Thus the mixup in transition hoses. Finally found the correct hose and that is why I posted the correct part number for it.

Basically, one could go 3.5" if they wanted to.

CVP33
02-24-06, 10:08 PM
Man does that look familiar.

BadCad
02-25-06, 03:31 PM
Nice job.

Now the real question is, how are you getting cool fresh air to the box
Air source same as stock, from the outside. My understanding, when compared to the Volant, the Volant airbox does not mate snugly to the inside fenderwell thus allowing hot air from engine compartment to enter airbox. Those who have Volants can probably elaborate on this more. Anyway, I think this setup is a lot less expensive then branded CAI's and works as well,. jmho.

Got5onit
02-25-06, 03:58 PM
Nice job.

Air source same as stock, from the outside. My understanding, when compared to the Volant, the Volant airbox does not mate snugly to the inside fenderwell thus allowing hot air from engine compartment to enter airbox. Those who have Volants can probably elaborate on this more. Anyway, I think this setup is a lot less expensive then branded CAI's and works as well,. jmho.

I noticed two holes in the stock airbox. The front opening has a snorkel that leads to the front grill. This U-tube is turned upward. Removing this looks like a good Ram Air effect can be had.:)

I tried briefly to remove it but the tube didn't want to budge. How the hell does it come out?

roadracerx72
02-25-06, 04:28 PM
I noticed two holes in the stock airbox. The front opening has a snorkel that leads to the front grill. This U-tube is turned upward. Removing this looks like a good Ram Air effect can be had.:)

I tried briefly to remove it but the tube didn't want to budge. How the hell does it come out?

Elbow Grease. It took me a good 45 minutes to remove that tube. Then I had two loose rivets to deal with. I broke a hack saw blade in half and carefully removed each rivet by using a set of vice grips to hold the rivet in place. If you have lots of patience, this won't be a big deal.

04CTSVFLA
02-25-06, 04:56 PM
i would like to see dyno comparison between the 3.5 vs 4 inch tubes. On a stock motor.

CVP33
02-25-06, 05:03 PM
I think the dyno will show that the 4" pipe is a half inch larger than the 3.5" pipe. Although a ruler may show the same thing.

Carnalsupply
02-25-06, 05:19 PM
Hey bud,

Thanks for all the great info, I got my reducer ordered from Boostcontroller and should have my CAI installed in no time.
I did notice one thing when trial fitting the pieces I do have, and wondered if you noticed this as well: The 4" elbow is not a very tight fit over the Throttle Body, in fact it seems pretty lose. Granted, it will be tightened down with a clamp, but it just seemed a bit more lose than I would have expected.
Thoughts?

CVP33
02-25-06, 05:37 PM
Hey bud,

Thanks for all the great info, I got my reducer ordered from Boostcontroller and should have my CAI installed in no time.
I did notice one thing when trial fitting the pieces I do have, and wondered if you noticed this as well: The 4" elbow is not a very tight fit over the Throttle Body, in fact it seems pretty lose. Granted, it will be tightened down with a clamp, but it just seemed a bit more lose than I would have expected.
Thoughts?

Once you get a quality clamp on that you won't have any issues at all. Mine was the same.

Carnalsupply
02-25-06, 05:44 PM
I'll make sure to cinch it down well.
Thanks.

roadracerx72
02-25-06, 06:03 PM
I was taking a look at the stock set up and was wondering if you/we might have a problem with the movement of the engine? CVP33 did you have anything come apart on you??

I already ordered all the parts so I am hoping not.

Got5onit
02-25-06, 06:21 PM
I think the dyno will show that the 4" pipe is a half inch larger than the 3.5" pipe. Although a ruler may show the same thing.

LOL!! I think you might be right.



As for the elbow, I did notice the hose is slightly bigger than expected. I tightened the clamp all the way to the last thread, but it is secure. I might add a washer or two to get another couple of turns out of it.

Leeman
02-25-06, 06:50 PM
How much for all the parts including shipping ?

-- Lee

04CTSVFLA
02-25-06, 06:54 PM
cvp - being a schmuck as usual - u say that as if it wouldnt make a difference. 3.5 vs 4 inches does make a difference in flow etc. for instance 4 may be to big.

10secvette
02-26-06, 03:12 AM
Nice job.

Air source same as stock, from the outside. My understanding, when compared to the Volant, the Volant airbox does not mate snugly to the inside fenderwell thus allowing hot air from engine compartment to enter airbox. Those who have Volants can probably elaborate on this more. Anyway, I think this setup is a lot less expensive then branded CAI's and works as well,. jmho.

The Volant does not get any fresh air. The stock box HARDLY gets any fresh air. What it does get is heat soak from the radiator, period. You guys with scan software, monitor your IAT's, that tells the WHOLE story. Get rid of the heat soak and the 90' to the tbody and there is some power there, I already proved that on the dyno in addition to the Volant being a $300 piece of junk. You guys are just spinning your wheels with this big tube intake.

10secvette
02-26-06, 03:23 AM
i would like to see dyno comparison between the 3.5 vs 4 inch tubes. On a stock motor.

Why not step up to the plate and spend some money on dyno time and give US your results??

http://www.cadillacforums.com/forums/cadillac-cts-v-series-forum/60032-spent-day-dyno-crap-volant-intake.html

I have run my V on the dyno with the stock tube, the Volant tube and no tube.... guess what... stock to volant, no difference, turning the stock or Volant tube up and away from the heat soak airbox, like a periscope, resulted in 7 rwhp. Next time your car is warmed up, turn it off, open the hood, grab the MAF and have someone start the car... then come back and report what you felt. (disclaimer to the mechanicaly challenged:(you know who you are) dont get your hand caught in the serp. belt.)

I have over 40 dyno runs on my V. I think it's baselined pretty good and consistent with most others on dynojets across the country. It has a catback and tune, with my homemade CAI.

10secvette
02-26-06, 03:25 AM
cvp - being a schmuck as usual - u say that as if it wouldnt make a difference. 3.5 vs 4 inches does make a difference in flow etc. for instance 4 may be to big.

There is no such thing as to big when it comes to an intake. The engine will only use what it needs, but if there is not enough, well, than that's a problem huh.

r_casino
02-26-06, 08:11 AM
...turning the stock or Volant tube up and away from the heat soak airbox, like a periscope, resulted in 7 rwhp.

So the airbox was up in the air, too? (Just making sure I understand this.)

CIWS
02-26-06, 08:16 AM
I have over 40 dyno runs on my V. I think it's baselined pretty good and consistent with most others on dynojets across the country. It has a catback and tune, with my homemade CAI.

I just had mine dyno tuned after adding the Corsa and a K&N in the stock box. I'm betting it's probably showing inline with what you've been getting ? (at least F'n CAGS is gone..)

http://www.ciws.net/ctsv/tunedyno.jpg

homer403
02-26-06, 10:47 AM
Was looking for a 3.5" carbon fiber tube and came across this. Take a look at http://turbohoses.com/Turbo%20Hose.htm ... might be better at keeping the heat out.

10secvette
02-26-06, 11:01 AM
So the airbox was up in the air, too? (Just making sure I understand this.)

I left the airbox in place and just turned the tube 90' to a straight vertical position.

Got5onit
02-26-06, 12:39 PM
I have over 40 dyno runs on my V. I think it's baselined pretty good and consistent with most others on dynojets across the country. It has a catback and tune, with my homemade CAI.

Well then, sir.
Why don't you step up to the plate and help all us ignorant V owners out and show us your superior CAI design?
It looks as if you've found a better solution to all our woes.
Please, help if you see us worthy of it.

10secvette
02-26-06, 01:02 PM
Well then, sir.
Why don't you step up to the plate and help all us ignorant V owners out and show us your superior CAI design?
It looks as if you've found a better solution to all our woes.
Please, help if you see us worthy of it.

Well sir, I have posted and reposted it numerous times. Help yourself.

How many times do you lead a horse to water before you say... oh well?

Got5onit
02-26-06, 02:02 PM
Well sir, I have posted and reposted it numerous times. Help yourself.

How many times do you lead a horse to water before you say... oh well?

So you removed the front snorkel and cut a hole in the side of the box. That's what I got from doing a search. I completely understand your reasoning behind it. That is the whole reason why I decided to keep the stock box, I've read your posts in the past. The AL tube is to help the rumored hose collapsing under WOT.

So in short, these horses have decided to drink.

:)

BadCad
02-26-06, 02:19 PM
10secvette:
I PM'd you re your CAI...

1fstkde
03-06-06, 12:20 PM
how did you trim your 90 deg elbow??? ordered all the parts and thank you for all the info...had to replace my lpe intake after i got into an accident, so im really excited about this one!! hated the hose the lpe came with..if anyone noticed the hose thins out right before the air filter...thxs again...

Carnalsupply
03-06-06, 01:31 PM
I finished the install of my 4" tubing with all the associated hardware and it worked out just fine, just a tad bit of interference with the radiator bolt and hold down (as noted above).
Found the "U" shaped inlet tube and the rivets holding it on, but couldn't get the grill insert out due to time constraints. I thought it would be a quick release after pulling out the plastic retainers on top but the damn thing simply wouldn't pull! Anybody have an idea of what might be holding the grill in place on the sides or bottom?
Thanks

Got5onit
03-06-06, 07:11 PM
how did you trim your 90 deg elbow??? ordered all the parts and thank you for all the info...had to replace my lpe intake after i got into an accident, so im really excited about this one!! hated the hose the lpe came with..if anyone noticed the hose thins out right before the air filter...thxs again...

Really sharp scissors! :)

I had to trim both ends to make it fit.

BadCad
03-06-06, 07:37 PM
those of you removing that convoluted snorkel up front that appears to restrict airflow - just be aware of potential water intake into the motor after its removal...

Carnalsupply
03-07-06, 01:09 PM
My home-brewed CAI is in and worked perfectly, 4" tube and all. Yes, it is a bit tight at the radiator mount, but no big deal.
What an AMAZING power gain! The tires break lose in 2nd gear from a 20mph roll!
OK, so I made up the part about the tires breaking lose.

V-SATX
03-07-06, 01:16 PM
My home-brewed CAI is in and worked perfectly, 4" tube and all. Yes, it is a bit tight at the radiator mount, but no big deal.
What an AMAZING power gain! The tires break lose in 2nd gear from a 20mph roll!
OK, so I made up the part about the tires breaking lose.

Did you use the same parts that Got5onit listed or did you change things around?:stirpot:

Carnalsupply
03-07-06, 01:44 PM
I used the 4" elbow, aluminum Tube, and the 4"-3.5" reducer. The aluminum tube was cut to 7" in length and I cut approximately 1.5" off the elbow on the end that mates to the throttle body.
I think if I'd have polished the aluminum instead of painting it (as someone else did) I probably would have gained another 4-5hp.
OK, so I lied again.

Got5onit
03-07-06, 07:34 PM
I used the 4" elbow, aluminum Tube, and the 4"-3.5" reducer. The aluminum tube was cut to 7" in length and I cut approximately 1.5" off the elbow on the end that mates to the throttle body.
I think if I'd have polished the aluminum instead of painting it (as someone else did) I probably would have gained another 4-5hp.
OK, so I lied again.

Painting it lime green would've netted 12rwhp. I'll be doing this mod tomorrow along with my huge 3ft LS6 decal that will go on the rear window. That should teach those SRT boys!! :stirpot:

CVP33
03-07-06, 07:54 PM
Painting it lime green would've netted 12rwhp. I'll be doing this mod tomorrow along with my huge 3ft LS6 decal that will go on the rear window. That should teach those SRT boys!! :stirpot:

http://www.300cforums.com/forums/srt8-general-discussion/16411-time-slips-12-74-a.html

12.74 at 107mph. Come teach us! :bouncy:

Got5onit
03-07-06, 08:08 PM
http://www.300cforums.com/forums/srt8-general-discussion/16411-time-slips-12-74-a.html

12.74 at 107mph. Come teach us! :bouncy:


CTS-V -------> :thepan: <----------- SRT8

There, you've been properly taught!
MUAHAHAHAHAHAHAHAHAHAHA!!!! :stirpot:


Seriously, those are INSANE times for a bonestock car!! WOW!!

Carnalsupply
03-08-06, 07:00 PM
Lime Green? Why in the world would anyone use only the Lime Green paint for a measly 12 rwhp gain when you could simply bolt on a pair of Red LS-6 covers to match the rear window decal, thus eliminating most (if not all) the parasitic drag caused by the V's obnoxious engine cover? That's got to be worth at least 200 "free" rpm on top end and who knows how much additional HP.
I think I'll contact the guys at Stealth and order mine right now, because if I simply take them off a Vette and modify them myself I'd be construed as a "cheesy knockoff".

CVP33
03-16-06, 09:28 PM
Not so homemade but damned nice. I think my hemi just woke up.......big time. Very loud now. No hiding 6.1 liters.

wildwhl
03-16-06, 09:53 PM
Shit, Chris, wash your beast once in a while, will ya? I'm sick of seeing you post pics of such a dirty beast. Even when you were a V-addict you refused to take care of the engine compartment. Come-on, man...get with it :sneaky:

10secvette
03-17-06, 08:57 AM
Not so homemade but damned nice. I think my hemi just woke up.......big time. Very loud now. No hiding 6.1 liters.

How much power do the braided lines add. DO they come with red R stickers?:bling: :bling: :rofl: :rofl:

V-Max
03-17-06, 10:20 AM
For those tuning with EFILive or LS1 Edit(Sorry, CVP!) have you considered deleting the MAF and going speed density(SD) mode. Big improvements can be had in OTR-CAI(Over the radiator CAI) or is there not enough room?

http://forum.streetcommodores.com.au/showthread.php?t=39132&highlight=MARk

Norm - My other car wants C6 Z06 acceleration!
http://www.beretta.net/board/ib3/ikonboard.cgi?act=ST;f=9;t=261;st=90

10secvette
03-17-06, 10:59 AM
For those tuning with EFILive or LS1 Edit(Sorry, CVP!) have you considered deleting the MAF and going speed density(SD) mode. Big improvements can be had in OTR-CAI(Over the radiator CAI) or is there not enough room?


There is a OTR/CAI system in beta form currently. I will be testing it shortly.

trukk
03-17-06, 12:24 PM
There is a OTR/CAI system in beta form currently. I will be testing it shortly.

Hmm, Sounds interesting. I'm trying to envision where the MAF anf Filter would be placed.

Looking forward to more details.

-Chris

CVP33
03-17-06, 04:31 PM
Shit, Chris, wash your beast once in a while, will ya? I'm sick of seeing you post pics of such a dirty beast. Even when you were a V-addict you refused to take care of the engine compartment. Come-on, man...get with it :sneaky:

I may have to hurt you. :histeric:

CVP33
03-17-06, 04:32 PM
How much power do the braided lines add. DO they come with red R stickers?:bling: :bling: :rofl: :rofl:

There's no "may" about it. I must hurt you. :histeric: (that was pretty funny though, damnit)