cold air intake

[Hal88]

I have the AFE installed in my 4.4, other than the big azz cold air filter looking super cool when u open the hood I can't really feel any improvement in performance, maybe it sounds a little better than the stock filter but I don't think the difference is much.
I agree that in order for u to gain the most performance then you will have to do an exhaust upgrade too.

[humptydumty]

thanks for feedback, ive only had the x5 for 2 weeks, did exhaust last week, found it hard in perth to find someone to modify as not many people change on the x5 here,(sleepy perth), put two lukey mufflers on,(local brand) and increased pipe to 2 1/4 inch back from the cat, even installers were impressed at start up! mild steel as well, got talked out of stainless, only cost 550 ausssie, happy with results, loud but not overboard.... as for afe, i read a few forums, people say it deffinetly improves performance, but i am concerned about effects with computer as obviously it will be taking much more air, very hard here in aus to get information. will consider chip, but it is $1,700 aus, only increases x5 by 10 kw, mmmmmmmmmm, fair bit ...........

[zerochief]

Originally Posted by humptydumty

as for afe, i read a few forums, people say it deffinetly improves performance, but i am concerned about effects with computer as obviously it will be taking much more air

The computer will make the necessary adjustments within a few minutes after installing the AFE.

[humptydumty]

thanks zero, im waiting for afe to come from america, have only changed my exhaust from the cat back, is yours the same or complete new system?
do i need to remap for intake?

[humptydumty]

zero, luv those mods!!!!!!!!! that is one sweet bmw!!!!

what is the pioneer sub? and that is one strange looking box? would like dimension if possible so i can do same, have you changed any other speakers? also how do you go about installing that amp?

[ca911]

does someone have a link to the AFE cold air intake?

My friend had told me to replace my air filter with something like this,
http://www.knfilters.com/search/prod...x?Prod=33-2255, is this a purely psychological improvement or is it worth doing?

[zerochief]

Originally Posted by humptydumty

thanks zero, im waiting for afe to come from america, have only changed my exhaust from the cat back, is yours the same or complete new system?
do i need to remap for intake?

Thanks for the compliments! Mine is a cat back system. Its a good idea to remap the system after the install.

Originally Posted by humptydumty

what is the pioneer sub? and that is one strange looking box? would like dimension if possible so i can do same, have you changed any other speakers? also how do you go about installing that amp?

Article from the main webpage that will help you install a sub amp of any brand: http://www.xoutpost.com/articles/x5/s...ctory-amp.html

Yes, I did swap out the crappy OEM speakers for MB Quarts - much improved!

Thread regarding my sub enclosure (but no dimensions yet!): http://www.xoutpost.com/x5-e53-forum/...installed.html

Originally Posted by StanF18

Whassup Zero: For the software, did u do both engine and tranny? Or just engine? Who did your remap, i.e. which company?
BTW, you and Wuzin have the best looking E53s on the site, IMO.

Thanks StanF18! The remap via GT1 was done by a long time BMW guru mechanic friend of mine - no after market company was involved. No tranny software also.

Originally Posted by ca911

does someone have a link to the AFE cold air intake?
My friend had told me to replace my air filter with something like this,
http://www.knfilters.com/search/prod...x?Prod=33-2255, is this a purely psychological improvement or is it worth doing?

Not worth it considering the AFE is over $300usd but it sure does add some mean sounds (you can hear a high quality sound clip of the AFE in my sig below. AFE is panned to the right channel)

AFE link: http://www.afefilters.com/

Some people run the K&N, maybe they can chime in...

[jst2878]

I installed the afe intake on my 01 4.4. no big difference at all

[Tomaz]

Originally Posted by jst2878

I installed the afe intake on my 01 4.4. no big difference at all

As is sometimes mentioned, do you think BMW knows less about their engine and airflow than some aftermarket shop? Plus the oil on aftermarket wet filters are known to mess up the mass airflow sensor.

[BimmerDude]

It helps a little, but only at higher speeds. Not worth the extra $$$. I've been wanting to put the oem back on. But been to lazy. I want to see the difference. Once I do that I'll let everyone know. I think the reaction time will be different compared to the AFE. Reaction to the WOT. I think there will be some sort of split second delay upon WOT. But then I could be wrong. I'll see when I put the OEM back on.