Based on what? Remember Dizzy's intake tests showed teh AEM intake to give best gains overall....Injen is extremely similar design to AEM.
I have Injen and have been more than happy with it. Rode in a 2J intake car and its waaaaayyyy too loud
A few quick points:
- Looking similar means absolutely nothing from a fluid dynamics perspective, so "being extremely similar" is an invalid point. They are similar in that both are a piece of pipe with a few bungs and a filter on the end.
- The testing showed a variance of I believe 3.8 horsepower, which is a range *easily* explained by environmental variables.
- The testing referenced lacks sufficient environmental and configuration data to be regarded as much more than anecdotal, and dyno performance in a controlled environment with the hood probably up to mitigate heat soak isn't entirely applicable to real-world on-road performance. Not within those margins, at least. The testing lacked a statistically valid number of data points, so the data provided was a curiosity at best. I would be surprised if you could dyno a car 5 times in the exact same configuration and not get a spread of 3.8 horsepower.
- The statement "I have an Injen intake and am more than happy with it" is an opinion. There is no data provided, and thus the statement is without value in this context. If one could define and quantify "happy" it would be grand, but that is not the case. Some people are "happy" slapping themselves in the testicles - that doesn't mean it is better.
- The statement "rode in a 2j intake car and its waaaaayyyyy too loud" is an opinion. There is no data provided, and thus the statement is without value in this context. You would need to identify sound pressure levels, the OP's acceptable thresholds for such, and perform instrumented testing to determine what is "too loud" for the OP and what is not.
- I don't care what he gets, and I didn't point him to a particular product, I simply referenced that there are multiple products anecdotally referenced as being superior which would merit further research. Not advising him what to buy, not tempering the statement with my opinion, simply stating "do your research".
- I also have the Injen intake; anecdotally, the car slows down when the engine starts to heat soak which is only partially mitigated by an intercooler. *instrumented testing* demonstrates that increased temperatures in the engine bay lead to increased inlet air temperatures that result in decreased power output and an adjustment to timing. I own it, and hereby clearly state that it is not, in fact, the
best option - based on *opinion* but supported by limited instrumented testing. As to what is better? I have not personally done enough instrumented testing, but anecdotally the inlet air temperatures in real-world conditions are lower with the 2j. Inlet air temperatures are overall lower with the stock airbox + panel filter. I bought the intake because I wanted to hear turbo sounds; I knew full well it wasn't the best "power adder", but I pursued the option that checked the boxes that suited my needs, mainly - quick installation and removal. Now, I'm looking to replace it with the 2j as I am less interested in quick installation and removal.
My statement to the OP, and anyone else, remains "do your research". Reading a single forum post is not research.
Just making it clear, I am not trying to be a jerk or anything, I am simply being very clear that I was not attempting to press someone to purchase anything in particular and that my opinion did not factor into my recommendation to research the options.
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