I`ve been looking into getting a Cosmo 13b re intake setup that`s for sale in the parts section and I want it BADLY. But I need to know all the details about putting this setup on an S4 block. And if anyone can respond to my questions as accurately as you can, and if it meets my standards I`m sold. But I need to know all the details.

- Will the cosmo LIM bolt directly onto the S4 block ? or do I have to get an adapter to bolt the cosmo UIM onto my S5 LIM ? If so I`m assuming I need different gaskets ?
- Let`s say supposifly the cosmo LIM will bolt directly onto my S4 block do I have to port the outside of my housings to match the cosmo LIM ? Because I know there is a difference in size.
- What kind of Throttle body would be perfect for this setup ? FC, FD, 13B RE or 20B ?
- And if I do have to change my Throtle body do I have to change my Throtle cable and TPS as well ?
- Also since I have stock S5 fuel rails do I have to get cosmo 13b re fuel rails for this setup or can I use my stock rails ?

Here`s a list of my setup I`m running right now. It`s a long list.
- S4 13bt HBP with 9.4 rotors. FD oil system, Rotary Aviation apex seals, E-shaft oil mod, FD hardend stationary gears. FB distributor.
- All stock S5 manifolds and fuel rails and injectors.
- Freshly rebuilt stock S5 turbo. 10km
- Haltech F10X
- Mazdatrix driveshaft from T2 tranny to non-LSD diff.
- MSD 6T on leading plugs
- HKS air filter
- HKS full 3inch exhaust, downpipe, mid-pipe, hi-flow cat, Silent Hi-Power muffler.
- HKS stage 3 racing clutch 6 puck double disc, heavy duty pressure plate, lightwight flywheel 12lbs.
- Racing pulleys
- Walbro fuel pump
- Emission block off plates
- OMP block off plate
- Ported and modded S4 TB w/S5 TPS sensor
- Koyo aluminium rad
- Racing beat oil baffle plate
- Double gasket on oil pan
- Apexi twin chamber BOV
- SS oil cooler lines
- SS clutch line
- Solid Aluminium motor and Tranny mounts

Eventualy I will change my haltech for an E6X and I will get an MSD 6AL for my trailing plugs, a FMIC, an LSD and bigger injectors.

 

I don't understand why you want this so bad. You still have a stock turbo that holds like 6 psi to redline and a stock intercooler. On 9.4 rotors. That's just asking for detonation.

can anybody here produce any dyno sheets showing a gain from a 13b re manifold? not only that, but is a 13b re mani even much different from the s5 ??? this seems like a bullshit 10 hp mod or something

 

So far i`m running 200hp & 200lbs/ft to the wheels at 4000 rpm at 8 psi and my cut-off is at 6500 rpm because i`m running only on 2 plugs.

 

I want this setup because with time I plan to think BIG. BIG injectors, BIG turbo, BIG FMIC, Think BIG.

 

if you're thinking BIG, then do the BIG things first because a 13bre manifold is definately a small mod.

200whp is underperforming even on stock turbo and intercooler. You should be able to do 220-250 depending on boost and the health of the motor, at least with turbo rotors you can normally. You can even do that on a stock ECU.

 

The reason why it`s so underperforming is because I`m running on 9.4 non-turbo rotors and it`s only my 2 leading plugs that have spark at the moment. So I only have 65% - 70% of my power. And I dont mind the fact that it`s not big in horsepower numbers, but I do know that the ports on the manifold are bigger so I will have a larger volume of air going into the motor. But like I said before ``I wanna know all the details about installing this manifold setup on my S4 block.`` But still thanks for the heads-up in terms of hp gains.

 

well, consider this...

someone made a long detailed thread about adapting an FD (REW) to aTII motor. It had before and after dyno comparisons and all. They gained about 3-4 Hp (could be wrong, but I know it was in the single digits) and a very slight improvement in the power band.

Remember this was w/ the REW manifold which appears to be of superior design to the RE, as well as on a built motor.

You'd be much better off buying some trailing spark plugs than wasting your money on this if performance is your goal, (or maybe an axillary injection setup w/ those 9:4 rotors......or upgraded injectors) and if cosmetics is your main concern, for what this will end up costing you could pick up a pretty sweet lip, or some CF mirrors.

 

With your mild level of tune, higher compression results in more power, not less.

The trailing plugs don't account for 30-35% of the power produced. More like 5-10% (probably closer to 5).

No you won't really. The JC LIM will not bolt to the FC engine because the port alignment is completely different, so you will only be able to use the JC UIM. People have mated the FD UIM to S5 (not S4) FC LIM's, and the real-world performance advantage of this appears to be minimal. I haven't seen anyone mate a JC UIM to an FC LIM, so you better make sure you can even do that before proceeding.

 

Me neither I`ve never seen a JC UIM mate to an FC LIM. That`s why I posted this thread. Before I make a final decision on purchasing a cosmo intake manifold setup I know so far I would have to change the secondary fuel rails and throtle body (FD, JC, 20B). And if anyone has ever tried to accomplish this ? Can someone please provide me with accurate info about installing this setup on an S4 motor with all S5 manifolds and hybrid turbo.

 

Question: why would you want to do this?

Answers to yours:

1: They don't line up. You'll need to make a custom adapter. Add easily $100 for this

2: Again, they don't line up. As far as porting on the runners, some would have to be done to smooth the transition.

3: Throttle body? All 13B TB's are essentially the same flow and size wise....pick one.

4: An N/A throttle cable would work the best.

3: Stock rails could be kept if you keep your S4 TII lower intake.

Now, in all honesty there is absolutely no point in doing this. If you're set on having the manifold then cool, but don't think its going to add anything aside from looks. A test of an FD upper swap showed about a 5whp gain (which was in a 380rwhp car....so figure about 1%), and lowered the peak torque a couple hundred RPM. Really did dick-all.

If you're thinking BIG as you say, just start adding the parts to your existing setup. These engines/manifold setups can easily support 400whp all day long. The problem you'll run into is cracking rear irons, and the only way to help that is move to a beefier keg like the RE or the REW.