Which one should I go for searched for video clips but nobody has none..... If anybody can find me a video clip of the test pipes please post it or just tell me which one sounds better and is a more reliable test pipe, or if any other test pipes you consider tell me + I have the HKS HI-POWER True Dual exhaust

 

Reliable? APS. I suggest APS, STRUP, XERD, TURBOXS.

 

aps

 

Utr

 

Of your choices....APS.

 

The difference being ???

I agree some of the cheaper $hits. But Helix makes a good product and so does APS...