Thats the big Question isn't it....
what do you get for your money ??? Performance or illusion
i have also been searching for conclusive answers before handing over what is a large amount of cash( for a full system)
On the gold coast only a couple of cars have had a full system done that i have been able to find out about, both XR8's. only one of the two that i know of has had a before & after dyno so far, and that car had a chip installed first and got approx 17-18kw at the wheels (chiptorque)and then had a full herrod system installed after the chip and that only put 4 kw on top, But it was supposed to make the car a lot better to drive with bottom - mid end improvement. I did not get to go for a ride though.
Some exhaust people i have been talking too say the standard system on FPV's is quite good to start with, and that it is Different from the standard XR8 system.
i also trialled a 3" single cat back system that actually lost power about 4 kw until about 5200 rpm and then made + 4 kw, it sounded good, i thought it went better but it didn't. that 3" system has been going on to XR8 's and supposedly performing ?? (i never saw a dyno chart)
FPV pursuit,Blood Orange, Brembos, momo knob & wheel, 6 stacker, Leather,SS induction 80mm T/B, SS CAI,
Kmac adjustable strut brackets,no rear muffler !