Is quoting yourself as bad as referring to yourself in the 3rd person?
Originally Posted by vman932
Regarding the exhaust, have you considered a boost actuated cutout? I have a boost actuated cutout from SP Racing
On my 2002 IS300, after the downpipe, my exhaust tapers into the stock resonator, then to the L-tuned axle back exhaust. Its no louder than stock at idle and normal driving, but you have a completely open/no restriction exhaust when you need it (on boost). It's the best of both worlds. I have ~20,000 daily driver miles on this setup. It is by far the most civilized modified car I have. My Supra is 4" from the turbo back with a small straight through Burns muffler. Needless to say, it's loud. My MR2 is cammed and degreed for max power. It only pulls a couple of inches of vaccuum at idle, and has issues at light load below 3000 rpm. This is of course less than civilized. Having these other cars is what led me to build my IS300 the way I did. The idea was to build a quick, reliable, pump gas, inconspicuous street car with a very street friendly powerband that was still civil enough to drive daily. I also wanted to use as many OEM components as possible. I decided on the cast manifold for durability, heat retention, and spool. I also have a SP Racing Quick Spool Valve that helps spool. I initially installed the TS poly mounts as well, but they introduced way more vibration than I thought was acceptable. I swapped in a set of new OEM mounts and couldn't be happier. I know most people will say, OEM mounts won't withstand 450 whp, but I have had no issues. Of course these are also brand new and I don't abuse them.
I will admit, the open 3" downpipe and open wastegate dump do not sound at all refined at WOT, but the quiet, subdued, and refined nature of the exhaust the other 99% of the time more than make up for it.
16 RX450h F-Sport
13 MKZ hybrid
08 911 turbo cabriolet, Champion, Cobb, Fabspeed, FVD, 6MT
04 IS300 Sportcross, NA-T, 6262, AEM FIC
02 IS300 L-tuned, vvti 2jzgte, 67mm, EMU, R154
94 Supra 67mm, AEM, 6MT
93 MR2 gen3 3sgte, t3/t4, 264s, AEM, 5MT
02 Honda VFR800 6MT