is there throttle response or sound to be gain by removing the intake section before the main box which contains the filter? Does that serve as a intake resonator?.. Thanx for any replie

 

The duct that mounts on top of the radiator is a snorkel that carries ambient temperature air to the air box. The piece that hangs down in front of the air box functions as a Helmholtz resonator to enhance and maintain low speed torque. It's not advisable to remove either part as doing so will probably reduce your perfomance by increasing inlet air temperature and decreasing acceleration off the line.

If you want to change your intake, either buy an AEM short ram intake or an Injen CAI intake or modify your stock intake. Any of these will give better results than just removing those parts.

 

Well an aftermarket intake removes both those parts. How does the aftermarket intakes perform better than the stock one then? I am confused..

 

An Injen draws in ambient temperature air while the AEM takes in underhood air. Probably the main advantage of either intake over stock is that it eliminates the restriction of the air box. However, a number of people report a loss of low speed torque with either of these aftermarket systems. The two things most often reported by users is increase in intake noise and quicker throttle respose. Whether you also get a noticeable increase in power, however, has not been definitely decided.

02 DX Millenium Red

 

the reason is cause the aem is smooth bore metal so that the air has nothing blocking its way and it dosent absorb heat like the stock one

 

I have the AEM short-ram, and my experience with the product leads me to believe that the dyno on the website, www.aempower.com , is fairly accurate. I also believe that it is entirely possible that the AEM short-ram draws in hotter air compared to the stock airbox route. Nevertheless, I feel the AEM does provide significant benefits, most importantly in the form of quicker throttle response.

In short, I think the AEM is a great bang for the buck mod (much more worth it than a cat-back or axle-back exhaust). I haven't had any experience with Injen, sorry.

 

Hi Pro-slug

A free mod is always a nice starting point and it can give you results as good as those that you will otherwise have to pay big $ for. It all depends on you needs and expectations...

Adrian Black got me started with his "dryer hose" CAI which I used for a couple of months this spring. It sounds great but I do not think that anything is gained in terms of performance - maybe you will even lose some as the others explained. If you choose to do this "free" mod remember to get perforated hose, so that you will not suck water into the engine in case you decide to cross a deep puddle.

Right now I'm running with the K&N short ram setup and it increases torque (and hence power) in the entire RPM range. Under normal driving conditions the intake air temperature increase (the short ram gets air from behind the radiator) does not affect performance due to the high air flow through the engine bay. In city traffic the temperature increase can cause significant power loss right after a stand still but as soon as i start going there no loss as far as I can tell.

Interested in documenation, dynos, etc? - see http://www.mazda323f.com

I think you should go for the free mod first - it is so easily undone if you regret it or want something with a name on it later... :-)


Have fun...
Carsten

 

pro-slug 2003,

If you're interested, for a totally free intake mod that works, go to: http://www.clubprotege.com/forum/sho...&threadid=1977

02 DX Millenium Red