You did a great job.I like the way you painted the pipes,heat shield and all.Looks factory.
I don't know for a fact, but supposedly the RL has a rather restrictive exhaust system. Whether or not this particular setup is less restrictive and could therefore possibly generate a small increase in power, who knows, but in my case I just like the way it looks and I have always liked a throaty exhaust note, especially in/on a pickup. You are correct in that in order to have true dual exhaust on the RL there would have to be an exhaust pipe attached to each manifold/header which doesn't work well with a transverse mounted engine. Since I would be using the stainless steel tips that I used to have on my '92 Corvette, the total cost for everything else would be around $250, otherwise with tips the cost would be around $300. Not sure if it's worth that many $$ just for looks and sound, but to each his own. My two cents.Question: other than looks (and possibly sound) what benefit is there going from 1:1 to 1:2 outlets? I don't see any change to exhaust flow restrictions in that setup. I would think a true dual exhaust would have one pipe from each header. No? (but that may be impractical with a transverse mounted engine).
I wonder if the OP noticed any performance changes? MPG changes? This looks like a very nicely done custom fab.
Actually I do have the cats. As a matter of fact I had to replace one of my cats last week due to an engine light. Also the exhuast does not hang any lower than the factory exhaust. I would recommend this set up to anyone that wants to do duals. The performance gains are minimal except some low end torque that I've noticed but the sound and looks are great.I tried to do all this and reverted it back to the OEM after going straight pipe from the CAT because I was advised against the muffler anywhere else than original location. Isn't the CAT removed in this installation? If so I was warned that would reduce back pressure and harm the engine voiding any warranty. In addition, the OEM muffler is in a recess at the back of the truck which really limits what can be done. This installation with the muffler in the middle appears to hang far lower, maybe 4-6" than the original reducing ground clearance.
Not being critical. Just asking questions cause I'll run this right down to my muffler guys and tell them they suck.