So are you saying you could go stage 2+ without the need for a downpipe of any sort? Just go with stock sports exhaust with secondary decats?Just had a brief read through this thread,
Not sure why anyone would swap a sport exhaust system out for any system for power or noise below 600hp. You will not beat the stock sports exhaust system with a full decat.
Pre fl tuning summed up below;
Any intake does little below 600hp
There are no measurable power gains to be had by adding a decat downpipe on its own
All the power gains at stage 2 come from fitting an intercooler that can deal with the heat generated by the turbos, this allows you to run more boost and cleans the timing up
There are large torque gains to be had by fitting an upgraded high pressure fuel pump!