- - AEM vs. INJEN resolution
(https://www.mazda3club.com/3rd-gen-engine-drivetrain-57/aem-vs-injen-resolution-20860/)
Rando
February-19th-2003 07:56 AM
You have a choice to read this tread or not. The subject tells you what it is about so you can have a choice to open or not. It is your fault that you had to read this.
jstand6
February-19th-2003 11:40 AM
Re: AEM vs. INJEN resolution
Originally posted by RHAGEL For all you people who cannot decide which is better, AEM or Injen, I have a real answer. I went up to AEM in Hawthorn CA and spoke with the tech support guy, Robert Green. I asked him about development of a CAI such as the ones made by Injen or K&N. He said that they had a prototype for the CAI but found that it actually made LESS hp than the SRI. Why you ask? The CAI pipe being longer, causes the air to be pulled through the intake at a position farther from the engine. Physics tells us that the rate of flow is less, the farther it has to travel. On top of that, since there are more bends in the pipes, the air tends to technically get warmer, because of friction. So there it is. Hopefully it is solved. This info is not true for all cars though, only the pro and maybe some others.
It's funny how the AEM guy forgot to mention that they make plenty of CAIs for other cars that look just like the Injen. The bends in the Injen (and AEM's CAIs) are very smooth and I can't imagine that would drastically increase the intake temperature. The AEM SRI pulls air in from the engine compartment where it is heated as it passes through the radiator and around the exhaust. The CAI pulls air in from the lower reaches of the front bumper cover where it hasn't been heated. Plus, the Injen filters are larger, allowing it to pull air with less restriction. The real reason AEM doesn't make a CAI for the Pro is that there is not a demand sufficient enough to spend the money. Which one is better? Well, it basically comes down to this question: Which one do you think looks better in your engine bay? The performance differences are negligible.
