Hey mate,
if you want to, and if funds permit, get an Injen CAI, designed a lot more professionally then the TRD CAI, and will give you more gains...
The Dyno that was compared to on the Melbourne Crew a little while back had:
-De-snorkeled airbox
-TRD CAI
-CES CAI
-Injen CAI
though im not sure if its conclusive research lol :P
As for your second question, YES, the Apexi will be louder, but keep in mind that since it will basically be a pod filter where your airbox was, it will still be sucking in hot air - even if you have a air feed up to it... Now i don't want to start any arguments, but from everything i have researched, don't get an SRI unless you have a 1zz... CAI + LIFT = 1 Happy Young XD
as for me... i am going with a CES CAI that i have had specially made up just for me B) keep in mind though, i have a s/c'ed 1zz ;)
Good luck mate :D
Evo
Thanks for the Reply!
I must say currently, I am leaning towards SRI because of 2 reasons...
1. Puddles! Sydney has been raining heavily lately and I was picking up my missus from the club when I went passed a MASSIVE puddle. I realised that I probably won't see sh*t all at night in heavy rain which obviously won't be good news for a CAI.
2. The gains in power in the lower RPM ranges really appeal to me. I'll DEFINITELY use alot more lower revs than higher revs. I don't think Stivo is very quick on the launch so the extra hand will be helpful.
I don't want it to appear as though I've already made up my decision between the two. I'm simply putting together the pros and cons so that I can pick the right one for me.
Here's another brain rattler, is it possible (or better) to make a box for the SRI? Seal it in and stick a tube out the other end for the cold air feed? Kinda works like an inverse CAI.
Just a thought anyway...
Cheers,
Young