Just got Duals on my 05 RX330

 

Wait does a dual exhaust Rear Bumper Cover exist?

 

There is No Bumper Cover for Dual Exhausts.
The Muffler shop making the modifications makes an opening on the left side of the rear body apron for the new tailpipe to exit.
The Dual Exhaust system has to be fabricated using some Lexus RX parts and some regular exhaust parts and a lot of expertise on the part of the Muffler/Exhaust shop doing the work.
You can expect to spend $600-$900 to have this done.

 

This looks good! Is this a true dual exhaust from the exhaust manifolds back?

 

No it is not,
A custom made 2 into 1 setup.
My main purpose, being an Old Gearhead,
was to have a True Dual Exhaust system.
i wanted True duals from the Manifolds back, but the cost and viability was not worth it to to me,
so, this was the next Best thing.
I didn't expect any perfomance gains from the 3.3L,
that's not why I did it.

 

Looks great. I'll stick to the single ouutlet, to which I went w/ a 2.5'' magna flow converter using 2.5'' piping to a Walker hiflow muffler connected to the oem resonator. Same as the diesel trucks, 5'' downpipe all the way to after the right rear tire, same as the road king custom, Vance & Hines pro pipe vs true duals. I look for performance 1st vs aesthetics.......Your dual outlets look great thou & on a gen2 rx as well.....

 

Sounds Awesome, but for me, trying to coax more power out of the 3.3L, was a waste of time.
Great Job and Good Luck with the mod.

 

can we get a photo from the undercarriage?

I just got an 09 RX350 and was looking to do a dual exit exhaust. Did you feel any loss of power in the lower end of the rpm? I was looking to go from a 2.25" inlet to a dual 2" outlet to avoid this.

 

I don't know when I can get under the car to take a pic, I'm no spring chicken LOL
No I didn't experience any loss of power at all.
I used another stock RX330 rear exhaust resonator and OEM chrome tailpipe extension.
The Muffler shop highly modified the new resonator to work on the Left side of the car and tied it into the rear exhaust pipe on the Right side of the car before the stock resonator. It clears the spare tire and exits out the rear on the opposite side of the car. They also modified the bottom of the left rear apron for the chrome tip to exit. The sound level is the about the same and Performance is about the same. There is little to No loss of back pressure since the exhaust goes thru another resonator, and shouldn't affect lower end power.

 

>>>I have since replaced the Walker quietflow (as the case was coming apart, thanx to cracks), so I went w/ a Flowmaster Delta 50 which is a chambered case. You'll need a offset inlet/ center exit. I used a 2.5'' inlet/exit. Surprisingly quiet, but I left the resonator.