Hey, I want to get the skunk2 intake manifold, but this means i will have to replace my AEM CAI with a type r intake. So which intake should I get? The comptech ice box? does that take up more room in the engine bay? or the aem cai? Also, getting rid of my gsr intake, getting the mainifold and the new intake will make this mod cost about 600 unless I can sell the other intake. Is it worth it? thanks
maclean

 

ya i think its worth it..i sat stick with the AEM..you should see about 5-8 hp from the manifold.

 

To make your GSR AEM work with a Skunk2 manifold all you have to do is get a hacksaw and cut off the last elbow where it goes to the throttle body. Don't buy another manifold unless you have to. You'll see by doing that you get a more direct airflow to the throttle body, best of all it costs nothing. that's what i did

 

I sold my gs-r AEM, and bought an ITR AEM... I enjoy it. Along with that, I ended up going with an ITR throttle body, so all the cables and placement would be OK. There are minor details that aren't usually pointed out when installing the skunk2 manifold. Check out the other posts in here about it before you install it. Good luck

 

why are you getting the skunk2 intake manifold? they're really only beneficial to an engine w/internal mods IE cams, high comp pistons, free'er flowing head. You could lose valuable torque by bolting on that intake manifold - just my $.02 from the looks of your sig - you'd be better off gettin some ITR cams & pistons first

 

I hope you're kidding...

I'm not sure if any of you know, but the GSR has a two staged intake manifold. You may think that your VTEC hits at 5800 but it's actually 4400. At 5800, the flaps for the secondary intake manifold pipes opens up. It goes from a long route to a shorter route which improves airflow, ONLY OVER 5800 RPMS. I put a skunk2 manifold in my car about a week ago and I have to say, VTEC rips! Not only that, but it makes an improvement in sound as well, very Type-Rish. Well there's my input, it's definately worth it for an average 8-10 hp at the flywheel.

 

you should get a P28 chipped and put that fawker in! with the new manifold and the chipped P28 my car woke up! (andit's aboot flippin' time!)
--justin

 

He is right. There is no point getting the intake manifold if you do not have heavy engine mods. You WILL lose a good amount of torque if your engine is stock.

 

Explain to me how we WILL lose torque.....

 

I think the STR intake manifold would be better, but I'm no mechanic, so I dunno.

I was going to get one a few weeks back but was told the same thing... you will loose torque unless you have some mods that can actually use the free flowing air. ie. turbo

 

I see you have lots to learn grasshopper. The STR manifold is designed for turbo use only.. The S2 manifold opens up that bottleneck that the stock GSR manifold has. So by opening up that bottleneck you are essentially creating more free flowing air as you would say. Not once or ever have I seen a S2 manifold lose torque, that is just impossible... Of course if you have other mods you will get greater benefits of the manifold but that goes for any mod you do. The more you have already done to your engine, the greater the effect the manifold will be.

Here's a bit of advice: If you don't know what you're talking about , don't post. It just makes you sound stupid.

 

skunk2 mani is a great mod to the GSR. the stock GSR mani is just too limited.
true u will lose slight bottom end but u gain in all up top. but you will only gain more hp/torque than lose it.

 

You will loose low end power if your only mod in the ITM. Once you get cams that problem will be solved, really only helps on TOPend anyways. You Also you will need to use a LS or ITR throttle cable. Bottom line is its not worth it to get the manifold YET, until u get more agressive cams.

 

Machaf unless you have graphs to prove your point, you are absolutely incorrect.

You still haven't explained why you would lose torque. Learn how to spell dude.

 

Ask yourself a few questions:

1) Why did honda choose to use the dual runner IM on the GSR?
2) What rpm range do you want power in?
3) What are you willing to give up to get power in that range?

1) The reason honda used a dual runner even though they already had a single runner design for the b16 was to provide good midrange and then open up for the high end. Though the manifold opens up it still has more friction than the ITR's so it doesn't flow as well up top.

2,3) Removal of the dual IM will most probably net you a loss in the low to midrange because of lack of velocity. Up top you may pick up some power, however, the overall effect of the skunk2 with stock cams and redline may make you slower because the power you gain will probably be in a very small window. That is why people are suggesting you get cams(to take in more air thus needing more flow) and possibly raise your redline(again more air).

FAST94GSR- As seen from my post, I agree that you may gain some peak hp but I think the overall effect will be less area under the curve thus making the car slower overall. Give me your opinion on my comments, do you disagree?if so your reasoning for why?

 

i still use stock GSR TB and cable
its still a great mod even without more aggressive cams.
of course u will see more hp with cams (ITR, Toda,etc...) so might as well get vtec controller, hi flowing headers, and exhaust.

id say still get it while their hot

 

That's a good explanation of stock vs s2. I agree with what you say. However I'd like to see a graph of a stock GSR vs Skunk 2 manifold. Your theory does make sense but I feel that the S@ manifold flows way more than the stock hence you pick up the air velocity which in turn won't hurt your torque in the low to mid range. I want to see if this is correct. I still feel that the stock manifold is way restrictive compared to the s2 or itr. When I put that manifold on my car, the difference was night and day. Granted my car is modified but I still tend to believe that you would get similar results but not exact hp numbers that I got.

Oh yea I have a graph after I installed the Skunk manifold. Most of my power was made in the midrange. The power was linear all the way thru except for midrange. I believe I got almost 15hp in the midrange. 10 hp down below and 10 up top.

Now let me ask you this, if the Honda Engineers designed that manifold to achieve more torque and midrange then why didn't they use the same design on the ITR?

This is a good discussion. The only way to know for sure who's right or wrong is to do a test on stock GSR for comparison.

 

HELP I DONT UNDERSTAND
Why are people saying they get an ITR intake with the skunk 2 itm>??? I thought it bolted directly in ? if u need a new intake u also need a new TB correct?

 

I will have to look for a graph comparing the two.

The reason honda used the single runner on the ITR was because the ITR has more aggresive cams and a higher redline thus needing the additional flow.

 

the ITR manifold doesn't bolt on to the GSR head, the bolt pattern is different. The skunk 2 manifold is essentially the same manifold with the plenum and runners improved upon. You don't need a different throttle body, however you want to upgrade your tb to a bigger one. Its not necessary though a stock one will work fine.

 

you need a new intake because the skunk2 IM is shaped differently than the GSR IM, it is like the ITR. So the different shape will change the routing of the intake so you need an ITR intake, I think an LS will work too, or you could modify the GSR one like was suggested above.

 

I found an article in HCI that may be of some help.

They did a test comparing the ITR(bigger plenum and slightly larger runner cross section) IM to an extrude honed del Sol b16 IM on a b16 and a b20/vtec.

The ITR IM had less power until 8200rpm on the b16 and less power until 7500 rpm on the b20/vtec.

Though not directly applicable it shows the general idea that the increased plenum and larger cross section can result in losing power for most of the power band.

 

One major work when putting on the ITR manifold on a GSR is that, you ahve to cut your GSR ends that connect to the motor, and weld them onto the ITR manifold, so that it will bolt up.

i suggest if you run with the skunk manifold, to get a comptech ICE BOX for the ITR..

just my 2 cents.

 

all I'm saying that that, I've heard of people doing this and they dynoed their car and the lost torque in certain area's when compared with the stock power band. I will try and find those dyno charts.


[Modified by machaf, 5:18 AM 10/22/2001]

 

post the dynossss