Hobbit

as already posted for fuelling and slipons sound is subjective i like loud very loud pipes most hate them but i normally go full system, the TFI is great for normal stage one and possibly up to stage 2 but if you want more then SERT or PCIII.
1 think to remember PCIII is an add on fueller and sits between the stock ECM and the injectors and does not alter the OEM map the SERT leaves a foot print on the ECM and alters the stock maps