Quote:
Originally Posted by Daishi
The problem is the X pipe..
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No it is not...if anyone on this forum has experience with this, it is I.
I have many posts regarding this and all the different setups I went thru to somewhat resolve it.
The resonance (sound) definitly pops right before/at the X-H-Y pipes, but it is 100% started and caused because of frequency that begins with the addition of the test/HFC.
The closest thing to removing this sound is either adding resonators right before that joint (a la Invidia CBE, which still doesnt kill it completely, but greatly reduces it) or going back to stock cats.
I am going back to stock cats, the loss in power is worth having a cleaner sound + the upkeep in stains building up against the rear bumper. But then again, I'll be happy I'm putting them back on because that means my supercharger has arrived
