I was just wondering what the difference between the RBC intake and the stock intake manifolds was. Thanks in advance.

 

RBC flows better. search next time

 

RBC has better air flow if you can tune it with something like K-pro or equivalent. If you cant tune it you will lose power The RBC intake manifold comes off the TSX (euro accord).

 

actually someone had it dynoed untuned and gained around 7whp with it. so it will help a little bit, you just won't get its full potential

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NTCustoms &raquo;</TD></TR><TR><TD CLASS="quote">actually someone had it dynoed untuned and gained around 7whp with it. so it will help a little bit, you just won't get its full potential</TD></TR></TABLE>

All up top. Midrange falls flat on its face without tuning. And that usually equals a slower car.

 

Again RBC is pointless on a K20a3! Unless boosted!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Todd00 &raquo;</TD></TR><TR><TD CLASS="quote">

All up top. Midrange falls flat on its face without tuning. And that usually equals a slower car.</TD></TR></TABLE>

So hypothetically speaking....

Stock motor with RBC/IM/CAI will be slower than just stock motor with CAI?

This is for a k20z1 not a k20a3 BTW.

 

yes because the air flow in an RBC changes from factory IM and Factory tune. when you start changing the way the car takes in air you start changing the dynamics of how everything works from factory.

to the orignal poster: the RBC is straighter then stock IM and it allows more air to flow.


Modified by risktypeS at 7:28 PM 11/25/2007

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by risktypeS &raquo;</TD></TR><TR><TD CLASS="quote">yes because the air flow in an RBC changes from factory IM and Factory tune. when you start changing the way the car takes in air you start changing the dynamics of how everything works from factory.

to the orignal poster: the RBC is straighter then stock IM and it allows more air to flow.


Modified by risktypeS at 7:28 PM 11/25/2007</TD></TR></TABLE>

I know about kpro but does our stock ecu learn anything from any mods added? What I mean is does it compensate fuel for when it runs lean or take away when rich or make any changes in timing?

 

yes to an extent. When you change the IM from factory it wont know how to correct the a/f mixture correctly since it no longer has the OEM IM.

 

I'm willing to bet it will gain power on a stock ecu. It might lean out a bit, but the K20 runs rich on the stock ECU anyway. I installed one on my car (A2 block, Z1 head, full bolt-ons) and it made a nice difference in the midrange. Seems like it needs tuning up top to reach its full potential tho.

 

I'm willing to bet you lost midrange power without a tune. The only thing that is compensating a Z1 for some of the midrange is your RBC cams.

 

I don't really understand your post, but i'm pretty sure the z1 cams are a PRC- variant. Not RBC.

 

I'm sorry.. it's late.. i can't think straight. i meant you aren't suffering major mid range loss because of your revised PRC cams in the Z1 which compensates for some of the change when you moved over to an RBC manifold. But you still lose some mid range for the simple fact the stock ecu can only correct but so much a/f with a stock IM.

 

Got my RBC intake today, I know that it may run lean but do I seriously run the chance of blowing my motor or anything? I am not getting kro prob not until summer.

What would be the worst that could happen running I/IM/RBC on a stock k20z1? I used 93 octane fuel btw, I dont know if that makes a difference or not.

 

I dont think you will blow your motor... Like I said, they run on the rich side anyway. The k20s seem to like being leaned out. Tomorrow I can load the stock cal and see how it runs (a/f, knock count) Thats what knock sensors are for, right?

Oh, btw, dont forget to drill out the hole in the IMG... It has somthing to do with idle air.

 

you are correct finkle, the whole is to allow faster idling (basically you start the car and it doesn't take so long to reach the normal idle). you won't blow your motor, but even though our cars come pig rich from the factory, a CAI/RH/E/RBC will lean you out a good amount.

 

NT customs is right. If you have CAI/RH/E you will be leaning out already especially with that RH. Then you put an RBC on you will definately be leaning out on top of that you may actually lose power. I really wouldn't put the RBC on untill you have something that can tune the new IM. You could actually do more harm then good. Even tho the RBC may flow better then the stock IM doesn't mean you are going to automaticlly get good gains especially with a stock ECU and nothing to tune it with.

 

i agree with risk. when i put on my RBC before the reflash #4, i felt no gains whatsoever except up top where it is suppose to help. once i got the reflash, i could notice an increase in low end torque and midrange, and an even larger gain up top. (note: although reflash isn't meant for the RBC, it still helps).