no... weapon-r doesnt make it for the corolla xrs, but does for the 08-09 scion xB. i was looking at it and saw that the 08-09 models have the same engine bay layout as our xrs so as a trial i gave it a shot.
Yes, it fits perfectly and the install was straight forward. design and quality of the intake tubing and filter is just as good as injen or K&N, it comes with the ram air kit but not with a heat shield. (i will make an attempt at a custom heat shield later). i have to keep an eye on the weapon-r's filter since stone11 has said his filter was falling apart after few days or driving, so i'll see wat happens with mine, visual inspection did not indicate any flaws on it.
so comparing it to the injen CAI that i had on my car this is what i thought. throttle response is immideate, its not as loud as the CAI(however on stone11's S it is really LOUD from 3K and above), infact under light acceleration u cant even tell its there, the CAI has more growl to it under WOT, its a different kind of sound, the CAI does sound more impressive, but who buys intakes for sounds


. the Weapon-r pulls strong through almost the entire rev band, the CAI pulls hard from 3K upwards all the way to redline at WOT. this is an interesting thing i noticed, on my 5spd there was a torque loss till 2K but on btk's auto, it was not the same (no torque loss). i just installed it tonite and havent driven much, also the temps are around 0 C rite now, so almost no heat soak and i dont know how it will behave on a hot summer day with 30 C temps.
next i inspected the injen CAI filter to see wat happend to it since i installed it over the last two months or so. the hydroshield was dirty, not too dirty but dirty, however if i wipe it with a cloth it cleans up. the filter itself is as good as new, i dont notice any water spots or anything on it. I was able to remove the CAI without taking the bumper off and thus i now know how to install it without taking the bumper off and its quite easy.
so which one wud i recommend ? its all down to ur personal preference. u'll just have to try it and see what works best for u. the only one i dont know about is the K&N typhoon, which is priced the highest amongst the three, the only thing it has more is a heat shield. weapon-r and injen CAI comes with dry filters, K&N comes with pre-oiled. i will be keeping the weapon-r, its a good product and works better for me personally. main reason for this trial was to see if stuff from xB fits on the xrs.
which brings me to the next most important point. I think everything from the 2008-09 scion xB will fit on the 2009-10 corolla Xrs, so now all ur xrs owners have more options (trd CAI, takeda CAI/SRI) including a bolt on turbo kit, but who knows if that will work or not.