Originally Posted by Hamadx1985

Hi there,

I'm new here and I too want to cancel the catalytic converters on my 2007 G35 Sedan (VQ35HR) and replace them with either an AAM or Berk's test pipe for better performance.

I found the AAM for around $240 (alteredatmosphere.com) and the Berk for $315 (importpartspro.com).

Since everyone recommends Berk. Does anyone know where I can get a better price for it and is it possible to make a custom test pipe with getting any notification lights on the gauges.

Originally Posted by G35s-Dude

Go with GTM resonated test pipes, they're the best thing you can ever get, or get Invidia HFC since they're the highest flowing HFC on the market with only 200 cell metalic core (compared to other 300 and 250 cell cores) and they're made in Japan .

Originally Posted by Glover997

based on this . . do u think that they are even better than a regular TPs in terms of performance ?