with consideration to engine noise ... yes they would. car design is one of those processes where a group of engineers get together and make the ultimate machine they can ... then the bean counters come along and strip half its life away ... the design and testing crew choke the rest of it by imposing restrictions on how loud the engine can be under full accel ...

thats why i believe the intake design can be made better ... the intake manifold is tuned for proper length to produce the best power it can but the air cleaner assembly is tuned to restrict noise and not be too costly (hence the filters, yuck) its a delicate balance of the designers and bean counters struggling to provide the best performance for the lowest budget while maintaining a low engine noise level.

SI gained 5hp on the dyno just by taking the air cleaner assembly off ... that usually introduces a massive amount of turbulence in the intake manifold and results in high rpm losses in most cars ... so there is more than 5hp to be gained from a better design ... but also plenty of noise to be found as well (what does not sit well with me is the noise ... it has to sound right at the right times)...

 

Do you know what is really a good cold air intake! that utilizes the stock equipment!?

My setup.

 

^^^ show off lol...

But i have to get started on building my dads CAI and/or short ram intakes for his crossfire. It needs some dressing up.

 

lol, renntech cf airbox, i love it!

need to design a new cai for your crossfire? lol I think you should do 3" tubing.

 

Did you ever complete this system? I want to do the same thing and would love to know the parts/vendor list.

 

Has anyone ever tried to shield the bottom of the air box from the engine heat? I removed my Piper Cross air induction and added the standard K&N filters to the air box. My butt dymo tells me I'm getting better low end response with the K&N's. If I can insulate the air box some, might that help keep the air cooler?

 

I have those insulation on the bottom of my Renntech airbox.



btw.

anyone reading this can throw me an offer for the renntech CF airbox. I'm turning the coupe...close to stock. I just bought a e60. 535xi

 

I believe I'm first on the list for the Renntech airbox.