RBC Intake Manifold

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Old 06-10-2015, 10:00 AM
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RBC Intake Manifold

Hey All,

Getting the RBC Intake Manifold installed along with 550cc injectors and the zdx throttlebody. Any tunes out there for similar setups? Another question i had is will i have serious performance issues til i get it tuned? I have ordered Tune from Vit with Expedited order but the closest Dyno tuner is a couple hours away so not sure if i should drive that far on it untuned or what.

Any information is appreciated, i couldnt find many threads out there regarding this or i am just blind. thought id throw a picture of the whip in here too.

Old 06-10-2015, 10:11 AM
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Bump. I was thinking doing a similar install too. I have access to some Si parts from my previous FG2 and friend's builds. I haven't pulled the trigger to install because no money for Flashpro.
Old 06-10-2015, 10:28 AM
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Did some Googling .. found a few things out:

Previous thread:
https://acurazine.com/forums/perform...daptor-877595/

and from Heeltoe:

*On K24Z3/7 engines, which come standard in 2009-14 Acura TSXs, 2014 and newer ILXs, and 2012 and newer Civic Sis, this manifold is able to be bolted on with the use of a special adapter. Also, the factory fuel injectors from these cars cannot be used on this manifold without adapters.

*If you have a K24Zx engine, the intake ports on your head are larger than the ports on this manifold. With our optional service, the ports on the manifold will be CNC-machined to match your cylinder head for maximum performance.

Looks like some modding is needed along with adapters and new gasket. For OP's question, looks like you should be ok as long as you don't beat on the car until full tune is done.
Old 06-15-2015, 12:15 AM
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I've got the adapters, the manifold and the zdx tb and adapter that I'm about to list with pictures.

Decent setup. No complaints.
Old 06-15-2015, 09:49 PM
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Why the part out optimus? I see your flashpro up for a tasty penny.
Old 06-16-2015, 10:19 AM
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Full disclosure - The fire for the project in my heart just went out.

I should have never completed it. When the car sat for four months, and then most of the winter, I had really moved on from the project emotionally.

But I saw it through, and then waffled back and forth over keeping it.

But at the end, I was offered good money for the car, and all the aftermarket parts were removed, so they are up for sale. Just need to get the pictures and list it up.

If the flashpro is too high, hit me up and like I said it's negotiable.

The car is stripped, and the parts just need to be boxed and shipped.
Old 06-16-2015, 01:37 PM
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I did not mean the FP was overpriced. It's a tempting buy and you listed it low. I usually see FP going for around $500 + second hand, but given the supply/demand for our CU2 platform, its a good price.

I'd jump on your FP and RBC set up it if I didn't have to pay my deductible to get my car fixed from meeting a curious deer. I have a RBC from my old Si sitting around, but saw I needed adapters, certain port holes expanded or plugged, and different injectors is way too much of a project.
Old 07-18-2015, 11:59 AM
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Looking to do the same setup with RDX 410cc injectors, still debating on the tb tho...
might go stock 06+Si tb or TL 3.7, orrr ZDX...
*ponders*
Old 07-18-2015, 12:29 PM
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Originally Posted by MNTSXClub_CU2
Looking to do the same setup with RDX 410cc injectors, still debating on the tb tho...
might go stock 06+Si tb or TL 3.7, orrr ZDX...
*ponders*
That's like 90% of the worthy options out there haha
Old 07-18-2015, 08:57 PM
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Just food for thought, this is a quote from VIT on his Flashpro Tuning website...

"OK I'm going to emphasis one major point that seems to be at the root of this evil.

- THE TUNE CANNOT FIX YOUR CAR IDLING LIKE COMPLETE FAIL AND THROWING CODES WHEN YOU INSTALL AN OVER-SIZED THROTTLE BODY FOR THE SETUP.

It's really that simple. Prove me wrong, open your calibration and find ANYTHING in there that relates to "HEY ECU MAKE THE THROTTLE BODY DO THIS WHILE THE CAR IS AT IDLE". Good luck, bring popcorn. PS, there are also no disables for the throttle codes you're going to throw with a misadjusted TB.

There are four ways to fix your throttle body dilemma (if it's bouncing like crazy).
- Find the vacuum leak.
- Adjust the small "set screw" that is located on the TB. This requires an allen wrench, unhooking the TB harness and aiming for 1400-1600 rpm idle with the TB disconnected. You'll know you got the right spot when the idle stops bouncing and/or the ECU stops throwing codes. Here's a fun fact for you, if the TB is so big that even at the lowest position of the set screw your idle is still funny -- shocker, because your motor doesn't NEED the extra air coming through it, it can't consume it, as a result your idle GOES UP.
- Idle relearn procedure. No, I'm not going to go indepth on this, search -- the information is out there and on flashprotuning.com in a blog article I wrote years ago.
- PUT YOUR STOCK TB BACK ON. This is by far the easiest and best way to fix your issue. Your 200hp ("230hp" lol ya right, congrats on BS miracle dyno #'s, whatever who cares, same point still applies) N/A car does NOT need a 70-80mm throttle body. Guess what, it does absolutely nothing for you. You don't gain any HP, you don't improve the car in anyway. The Skunk2/ZDX/TL TB's are for major builds (big power n/a builds need big TB's, some S/C setups benefit from big TB's -- sorry your KW kit doesn't, the Centri blower works on the same concept as a turbo).

Fun fact, we're making over 730whp with a 65mm TB. Shocked? Good.

Putting a huge TB on your car seems to be the latest trend -- it's right up there with hellaflushing."
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Old 07-19-2015, 02:37 PM
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^read that already.. but yeah I'm seeing all these builds on IG with huge TBs lmao. It's only gonna make the accelerator more difficult to control IMO
Old 07-19-2015, 10:03 PM
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This supports what Vit said

Building Honda K-Series Engine Performance
Old 09-01-2015, 08:46 PM
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Originally Posted by xtcnrice
^read that already.. but yeah I'm seeing all these builds on IG with huge TBs lmao. It's only gonna make the accelerator more difficult to control IMO
Yup. The bigger the TB (in excess of need), the more daily driving sucks...
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Old 09-03-2015, 10:02 PM
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yes this was a worthless mod in my opinion for the price and stats seen from Vit. So i added a turbo haha here is new build thread

https://acurazine.com/forums/perform...u2-mix-935794/
Old 10-12-2015, 10:29 PM
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So if I'm reading right, the RBC manifold will bolt up to the factory K24Z3 TB?
Old 10-13-2015, 07:33 AM
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Originally Posted by ichi_ban
So if I'm reading right, the RBC manifold will bolt up to the factory K24Z3 TB?
You are going to need a gasket that'll block some of the unused coolant passages or have a shop weld those in, aftermarket SRI or CAI as tubing distance gets shorter, and FP to make it run right.

There are a few threads on here about the RBC swap.
Old 10-13-2015, 11:42 AM
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Originally Posted by ulrblitzer
You are going to need a gasket that'll block some of the unused coolant passages or have a shop weld those in, aftermarket SRI or CAI as tubing distance gets shorter, and FP to make it run right.

There are a few threads on here about the RBC swap.
Yes I've been reading them and either I'm missing my answers or I don't see it. Unfortunately I have an auto so performance would be minimal IMO. I heard that FP doesn't fix the idling issue unless you use the stock TB? I would love to do a swap and 6spd conversion but don't see anything on it.
Old 10-13-2015, 12:50 PM
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Try asking Vit for some help? He's tuned enough CU2s and I'm sure a few of them have the RBC installed.
Old 10-13-2015, 10:31 PM
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Don't do the RBC swap. Well, unless you want to actually lose power... then go right ahead.
Old 10-14-2015, 09:04 AM
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Originally Posted by iCrap
Don't do the RBC swap. Well, unless you want to actually lose power... then go right ahead.
That's only if you don't tune it I believe.
Old 10-14-2015, 09:22 AM
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One of the local guys here did base line dyno on stock + intake, then tuned with s2 downpipe and rbc on FP. Hard to tell what the rbc added to the package, but there were noticeable gains made. He has a thread here somewhere.
Old 10-14-2015, 11:12 AM
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Originally Posted by xtcnrice
That's only if you don't tune it I believe.
No. Read vit's article. the car lost a fair bit of power across the rev range, except at like 7500RPM where it gained like 7HP.

He also tested the TB swap
http://blog.vittuned.com/2012-honda-...ld-comparison/
Old 10-14-2015, 12:27 PM
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I'm guessing there are no valuable gains with the RBC on a K24Z. With K20s (RSX-S, 8G Si) RBC provides gains over stock I believe. I know I'm not making things up when I say I've seen evidence of gain when tuned... but probably wasn't with our motor.
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Old 10-14-2015, 01:46 PM
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RBC is the stock IM on 8th gen civic si's lol. I stared at one for 4 years of ownership.

I know what you're talking about though. Superstreet had an article on swapping IM's on K20 variants.
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Old 10-14-2015, 03:01 PM
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It seems a lot of mods are just people going "well it's bigger, it must be better!" with the intake manifold, throttle body, intake etc while ignoring the actual engineering side of it.

And then the claim they feel massive gains in performance when in fact it's just placebo effect or wanting to feel like they didn't just waste money for no reason.

But yeah im sure with the right setup and motor the RBC might make a bit of a difference after being tuned. the TB swap though is totally pointless..

i also like how people say the plastic manifold is cheap and crap when actually its a better material to use for that lol
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Old 10-17-2015, 03:34 AM
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Originally Posted by iCrap
It seems a lot of mods are just people going "well it's bigger, it must be better!" with the intake manifold, throttle body, intake etc while ignoring the actual engineering side of it.

And then the claim they feel massive gains in performance when in fact it's just placebo effect or wanting to feel like they didn't just waste money for no reason.

But yeah im sure with the right setup and motor the RBC might make a bit of a difference after being tuned. the TB swap though is totally pointless..

i also like how people say the plastic manifold is cheap and crap when actually its a better material to use for that lol
I'd rather have the torque in the daily driving range, so in addition to putting the 09 intake cam and VTC in my 04, soon I'll be installing the plastic manifold to match. I just realized I needed the injector base and fuel rail to do it and the injectors are different, so I made up these handy adapters....



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Old 10-18-2015, 12:43 PM
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That's really cool feuss2!
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