Best y pipe for stock headers and cat back?

Long story short, I'm wanting to improve the sound and HP of my taco without changing headers. I have a afe cai and Gibson cat back, I plan to get a maf after selecting a y pipe.

Can anyone compare the dt vs urd y-pipe? Which is louder? Which sounds better? I know dt headers combined with aftermarket sounds raspy, but I'm keeping stock headers.

Does the urd y pipe lose bottom end on a n/a engine? Can anyone provide actual dyno numbers on the improvement of HP after adding pipe to stock headers? I've read a LOT on this forum and others but there are no clear cut answers. Thx!

 

In efforts to have more clearance and a flatter bottom with skid plates people will maybe only want to ditch the low hanging cross-over/y pipe.

I want the pipe bomb to go with my TRD exhaust so I can achieve the above.

 

Memario, you ask a valid question. I have a limited budget and am wanting to do other things than improve sound, HP (I.e. Rear suspension, powder coat black wheels bronze, tint windows....and buy maf). Also, the troubles involved with adding headers (emissions, installation, increased temperatures under the hood in the az heat) are all things id like to avoid.

I've read that many people feel a y pipe adds little HP and maybe the best thing is for me to wait til i can afford headers instead, but I was hoping I could hear from someone who is running a dt or urd y pipe on stock headers.

 

Right, but I can easily change out the y pipe when headed to emissions. Not so much for headers.