I am looking into the type of up-pipe I want to purchase for my WRX. To flex or not to flex? Braided sections create more turbulence, and could leak, but some solid pipes don't fit as well. Correct installation is key I guess...
I have heard good things about:
-helix flex up-pipe
-STi up-pipe( but has smaller diameter)
-Perrin
-Crucial
-Cobb
I have heard bad things about:
-invidia(leaking)
Basically I am just curious as to what everyone else is running and how they like em.
And I am not going to gut my cat in my stock up-pipe, already considered that, want a bit more flow.