The APR Stage 2 requires a high-flow downpipe with or without a sports cat and a performance air intake. This customer opted to install a BCS PowerValve turbo back exhaust with sports cat alongside a Turbo Technics Large Bore Intake Hose matched to the stock air intake with the addition of the APR Intercooler Kit to keep the charge temperatures consistently cooler.
The stock intercooler is absolutely fine for Stage 1 and Stage 2 power, however if you are wanting to maximise the performance gains then a properly developed intercooler kit is required. The APR intercooler makes good use of the space that VW failed to take advantage of.
The BCS PowerValve exhaust frees up the exhaust flow, removing the restrictive factory cats in favour of a high-flow item. The PowerValve system also includes a valve system which does not function via the stock method, BCS have designed the system to function off of the vacuum from the inlet manifold, meaning the valves open when boost of a certain level is generated.
With these upgrades installed and the APR Stage 2 High Output ECU & APR DSG software. The APR DSG Software is essential for increasing the clutch clamping pressure and optimising the temperature protection for eliminating the clutch slip which can occur with the High Output ECU file.
The results are absolutely phenomenal. An increase of almost 100lbfts at peak, and 70hp at peak. With gains right across the rev range, this Golf 7R will be an absolute BLAST to drive!