[Euro] Apexi Power Intake (was AaronNg's "Secret Weapon" *REVEALED*)

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Originally Posted by sodaz

Even with a design like the Gruppe M you'll still get heat from the engine bay because there's no inlet for cold air. Unless there's a way to duct cold air like the comptech icebox horn to a pod filter don't you think there wouldn't be much of a performance gain once the engine bay heats up?

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Not really - look closely at the pic below. Right of the battery and below the pod filter there is now a hole which used to house a pipe feed to the resonator.

So if Aarong boxes up that area and the pod - it will create a vacuum which will draw air mostly from that cavity. As the cavity essentially leads to the front bumper and the vented undercarriage - it is much cooler air than the actual engine bay. Same thing for the Gruppe M - it should be getting the air mostly from the cavity just like the Injen/K&N or the Comptech. Sure you are going to get some heat transferred through the box but it is better than just a pod in the engine bay.


http://img166.imageshack.us/img166/6886/apexirb2.jpg

I see. Got it. :thumbsup:

^ yep yfin's got the idea... even after a long stint of hard driving the gruppeM heat shield was cool to the touch (not even warm). It also helps if you make some venting in the foglight cover or remove it altogether. Once air enters the area where the resonator used to be it basically doesn't have anywhere else to go but up through the opening yfin pointed out.

This is very interesting....

So is a setup like this designed for low-mid range power or just top end power? And in terms of power, how will this/gruppe m compare to something like a full CAI?

sorry to disapoint u people ..
2 of my friends already had the intake ages ago
sound wise, its bloody awesome!
nice choice aarong :)

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Originally Posted by sodaz

This is very interesting....

So is a setup like this designed for low-mid range power or just top end power? And in terms of power, how will this/gruppe m compare to something like a full CAI?

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Well personally i think a well shielded SRI intake that has a direct passage of cold air comming in is better than a full CAI. Reason being, the longer the pipe and the more bends it has the more vacum force is required to suck air into the engine. Personally i didn't notice a loss of low end torque with the GruppeM, I wonder if Aaronng did with his Apexi... but I'm guessing he didn't.

It'd be interesting to experiment with different intake pipe lengths on a dyno.

One thing i like about the mugen/gruppem/apexi/comptech icebox is that they also keep the stock rubber intake tubing - which is less prone to heatsoak. Which is good if you're drawing in cold air, it'll keep cold... draw in hot air and it'll probably have the opposite affect.

I've thought about intakes far too much :thumbdwn::p

true, i have notice a bit lag at low end after installing the full CAI, well not really lag, juz that the throttle is less responsive

yea you have? Have you tried to install it in SRI mode? (can't remember if your intake can be installed in SRI mode) be interesting if that fixed the throttle response problem.

yea, haven't tried the SRI mode yet, I guess it would solve the throttle respone problem as the SRI mode giving a much shorter induction distance, anyway i'm quite happy with the CAI mode at the moment.
But I dun think the open SRI mode would provide as much gain as the CAI mode unless i have some pipe to draw some fresh air directly to the air filter. So i will juz stay with the CAI mode.

yea that's fair enough... you could always do what aaronng is going to do and make a custom heat shield, but CAI is a much easier option, unless you loved how it felt in SRI

hms doesnt the euro have a variable air intake where it re-routes the air through a shorter passage when needed?

So in theory, an SRI would not be beneficial for the K24. A longer one would be ideal.

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Originally Posted by EuroDude

hms doesnt the euro have a variable air intake where it re-routes the air through a shorter passage when needed?

So in theory, an SRI would not be beneficial for the K24. A longer one would be ideal.

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Euro has a single intake runner.

A CAI is not THE ideal mod. Each mod supports the engine. Even the best intake in the world that gives the best response and funnels in air at the same temperature as outside will only allow your engine to perform to its potential. If the stock intake without resonator is done well, then you will not get power gains. Anyway, for the Euro, the limiting component is the throttle body and intake valves. Filling up a 600ml cylinder at 6000+rpm is not easy. That's why dynos show a loss of torque above 5500rpm, even for the SCCA TSXs.