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Old June 30th, 2009, 10:38 PM   #1
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09 TL-S intake vs 7th gen V6 Intake

Well, I have been hearing alot about the new Magnesium intakes and had hoped there would be alot that could be done with them, so I ordered in a intake and here is what I found.





The 09 intake being magnesium is about 1/2 the weight of the cast AV6 intake.
The 09 intake base bores and passages are the same size as the AV6 intake, so no advantage there.
The 09 intake has a 75mm opening where the throttle body mounts (and not much material to port it larger) where as the AV6 intake is 66ish MM but can easily be ported out to 75-80MM.

So in the end I just don't see the justification for the $500 for MT ($330 AT) it would cost to get all the parts needed to change out the intakes.
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Old June 30th, 2009, 11:22 PM   #2
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WOW good info very nice
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Old July 1st, 2009, 12:04 AM   #3
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Intersting. About how much does the 7th gen intake weight would you say? Is there any advantage to the two piece design on the TL-S intake, i.e. posible spacer inbetween the two pieces to increase air flow/capacity?
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Old July 1st, 2009, 01:02 AM   #4
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I just like it because it looks sweet and the lighter weight is more than good enough for me.

I think also the cost to do all that to a AV6 intake would cost about the same, no?
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Old July 1st, 2009, 04:06 AM   #5
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Intersting. About how much does the 7th gen intake weight would you say? Is there any advantage to the two piece design on the TL-S intake, i.e. posible spacer inbetween the two pieces to increase air flow/capacity?
That would be very difficult due to the complex curves at the down turns into the lower runners, I too was looking at the same thing. The 7th gen ntake is probably around 10 lbs.
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Old July 1st, 2009, 04:09 AM   #6
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I just like it because it looks sweet and the lighter weight is more than good enough for me.

I think also the cost to do all that to a AV6 intake would cost about the same, no?
No, porting out a 7th gen intake doesn't cost that much ($75 for me to do it) and they can be gotten from any junkyard for $100 or less AT and around $200 for the MT version with the butterflies.
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Old July 1st, 2009, 06:15 AM   #7
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Have you taken it apart yet? There should be 2 sets of butterfly valves on each bank.
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Old July 1st, 2009, 06:35 AM   #8
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No, the butterflies are still in the center and are now a part of the upper cover, which is why the upper cover is now almost $300.....

The link below is to the 08 TL-S intake, but the diagram will give you the idea of whats going on....

http://www.acuraoemparts.com/delray/...All&vinsrch=no
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Old July 1st, 2009, 07:09 AM   #9
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I knew they're in the upper cover but all of the photo's show only the bottom of the manifold so I wasn't sure if you had it or not.

I just realized...I would have seen the large actuator hanging off the side if you had the cover :P. So much for being tired
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Old July 1st, 2009, 07:27 AM   #10
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Well, unless someone wants it I will be shipping back the TL-S intake , I paid $203 for it.....
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Old July 1st, 2009, 02:27 PM   #11
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Arg if i had the money I'd pick it up...thats $50 cheaper than I've found it
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Old July 1st, 2009, 03:04 PM   #12
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Paul, if you want an SAE paper on Honda's magnesium intake manifolds please PM me
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Old July 1st, 2009, 03:33 PM   #13
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Have you taken the halves apart?

How's it look inside?
I'd imagine you could get to the entire thing to port/polish it, but maybe you can do that with the 7th gen one already?
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Old July 1st, 2009, 09:56 PM   #14
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Really interesting i am glad i got mine ported. I got one from a junk yard for $75 dollars. And then had it ported for about $150 so i guess it was worth it to go that route, since i was debating when i heard about the 09 TL manifold. +$60 for the powder coating glad i made the right choice. The 2008 TL - S ? Is that manifold a better alternative to our manifolds? or is it in the same boat as the 09?
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Old July 2nd, 2009, 10:46 PM   #15
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Why honda use different intake manifolds for AT and MT cars???
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Old July 5th, 2009, 06:01 PM   #16
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Quote:
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Why honda use different intake manifolds for AT and MT cars???
im not quite sure but i think the mt manifold has this valve that opens up to allow more air and the at manifold doesnt have that feature
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Old July 6th, 2009, 07:30 PM   #17
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I'm still getting one. lighter is faster and I'm porting and polishing my intake runners and intake plentom spacer
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Old July 6th, 2009, 07:43 PM   #18
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I'm still getting one. lighter is faster and I'm porting and polishing my intake runners and intake plentom spacer
What intake plentom spacer are you talking about?
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Old July 6th, 2009, 10:20 PM   #19
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Paul, even though this turned out to be a bummer, i would still like to thank you once again for being the innovator!! Research and Development from the one and only!! Definitely some interesting finds. Makes me look forward to the head porting we talked about a while back.
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Old July 7th, 2009, 07:18 PM   #20
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What intake plentom spacer are you talking about?
its all on the acurazine forum
INTAKE MANIFOLD SPACER
01 MDX 02 MDX
8 17108-PGK-A00 SPACER, IN. MANIFOLD
INTAKE MANIFOLD SPACER
03 MDX 04 MDX 05 MDX 06 MDX
3 17108-RDJ-A00 SPACER, IN. MANIFOLD
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Old July 7th, 2009, 09:10 PM   #21
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i am really wondering why honda uses such an explosive materiel magnisium is a great metal in a solid chunk with no magnisium dust or water asound but the stuff is so volatile i will stick to aluminum!
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Old July 8th, 2009, 03:24 AM   #22
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i am really wondering why honda uses such an explosive materiel magnisium is a great metal in a solid chunk with no magnisium dust or water asound but the stuff is so volatile i will stick to aluminum!
Its not entirely magnesium, its an alloy. Its fine.
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Old December 14th, 2009, 07:27 AM   #23
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Excellent pioneering as always Paul!!

where did you get it for only 203? the acurazine thread said its around 350 and very hard to find. Do the 09 TL-S's use an IMRC type of device?

i think the important thing here is that dynoes have proven that the 09-TL-S manifold gives even more gains to a j32 engine than the type S manifold WITH p2r's custom plenums. and it can be installed with an adapter plate from P2r, which is 70 bucks new. Also needs to use an adapter from p2r that attaches a type S throttle body to the 09 manifold, i think thats also around 60. But if the 7th gen intake (from the manual, i'm assuming?) is only 100 bucks from a junkyard, then for around 100+60+70, (230), a person can have more gains for far less cost compared to the cost of the custom p2r plenums themselves (400 bucks), and thats not even including costs of the 01-03 type s manifold and IMRC. (another 100-200 bucks)..
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Old December 14th, 2009, 07:55 AM   #24
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$203 is my Acura parts source at my price just for the lower intake, yes the TL uses IMRC and it is built into the upper cover and is where things get real pricey at $300 for the cover, now the newer (08+) pilot/oddy and now the TA accord have a much cheaper cover without the IMRC in it. Now every junkyard I have looked at for the new intake with a IMRC cover has them but want $350-$400 for them.
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Old December 14th, 2009, 09:59 AM   #25
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Ah, good info! thanks! i don't think the guys on acurazine are running the cover with built in IMRC. Is your acura parts source some kind of special discount that you get (buddy hookup?), or is there a website that is publicly available?

sounds like the most cost effective upgrade solution for the 6th gen accords and equivalent acura's is to either use the 7th gen accord intake bored out to 75, or to get a coverless manifold (through you :-D) and swap in the top plate from a new gen car.

kind of amazing that junkyards already have the new 09 TL parts in stock. but statistics are statistics..
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Old December 14th, 2009, 10:29 AM   #26
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For a 6th gen you will also need runners from a pilot/oddy/2nd gen tl/cl.

As far as my discount, well, go and spend $25K+ a year on Acura parts , but there is www.OEMACURAPARTS.com online which gives good pricing.
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Old January 5th, 2015, 05:31 PM   #27
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So when doing the swap how do you go about the butterflies? I have a j30a4 and I want to do the j37 manifold but don't know how to go about the butterflies if anyone can help thanks.
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Old January 6th, 2015, 08:05 AM   #28
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Nice. Good info here for future upgrades. Thanks.
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Old January 6th, 2015, 08:50 AM   #29
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So when doing the swap how do you go about the butterflies? I have a j30a4 and I want to do the j37 manifold but don't know how to go about the butterflies if anyone can help thanks.
The butterflies are located in the top plate, which is seperate from the manifold
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