_DAG_

Hey that apexi looks sweet, but it's pricey. I guess you get what you pay for, it should sound awesome btw and give great gains. You should dyno the car beforehand, install the exhaust, and dyno afterwards. Everyone would be thrilled to see the results, at least i would. Good luck!

Hey did you see this http://www.lexusgonewild.com/norCal_v2/I6exhaustComp.htm? BTW i have a pro-1 axleback and pro-1 header, but am still running the stock racepipe/y pipe, with the cat. The racepipe makes a lot of difference, so if you leave that on there it shouldn't make it too loud as opposed to if you were running a straight racepipe with no cat.

Hey, dude if i were you i'd invest in a header, intake, exhaust, and then go for the apexi s-afc. This will greatly improve your power.

my guess would be the is300. it's newer, and probably lighter, making it more agile

Yeah, hey first post, but anyways, i get around 250-280 mi before i go fill up, or about 17-20 mpg with a mix of city/hwy. not bad, though. but other cars do get better.