Fsport exhaust
http://www.aimgain.net/products/aero/rx450_jvipgt.html
One option as posted above is a muffler-delete but the risk with that is the sound might be too loud or raspy for your taste since all that is left is the resonator. If you want something safer with just a small investment (~200$ installed) consider a universal Magnaflow muffler to replace the existing muffler only (leave on the resonator which is the smaller cylinder near the exhaust tip). I recently setup a custom universal Magnaflow axel-back exhaust on my IS (with resonators kept) and absolutely love the smooth deep sound without being "muscle-car overbearing". Since I only have my RX F-Sport for one more year in my lease and I'm eying the upcoming NX, I won't invest in this but if I had the RX longer, I'd do this without hesitation for the sound and greater pep you will get.
If you're curious, see my thread on the IS F-Sport which also has videos of the car accelerating: https://www.clublexus.com/forums/per...k-exhaust.html
Keep us posted!








