down pipe

[jerrad]

How many tenth's will I pick up if a change from a 3 inch poston dp with a ported elbow to a terry houston?

 

[NickSJ]

I had a ported elbow + Poston 2 pc 3" DP, and I just switched to a THDP. I haven't taken it to the track since then, but from what I can tell so far, there's not much difference. Definitely not as much as I had hoped, for the $450. But no more leak from that joint, and the THDP does let out more turbo noise, which is cool. And, after many turbo R&Rs, I was really sick of reaching for that bottom bolt.

 

[stickybones]

Based on your buildup in your signature, I'd venture to say you won't see any noticeable improvement.

 

[VinsGN]

I had a ported elbow + Poston 2 pc 3" DP, and I just switched to a THDP. I haven't taken it to the track since then, but from what I can tell so far, there's not much difference. Definitely not as much as I had hoped, for the $450. But no more leak from that joint, and the THDP does let out more turbo noise, which is cool. And, after many turbo R&Rs, I was really sick of reaching for that bottom bolt.

The only way I could get my Poston DP to stop leaking was to use a stock exhaust donut.