Visited... Uk now I have 520 BHP..Europipe to come
The production 997 TT exhaust is not far away.
They have measured a backpressure drop from .49 bar to .12 Bar.
They are just ironing out a boom/drone at around 2000 rpm.The workmanship looks amazing and they will be using 100 cell cats but much larger than standard,ie no warning lights(makes sense)
A few days later the car was on the rolling road at West tuning at thruxton.
464.3 Bhp was measured .The engine is still very fresh only 3000 miles ! After removing the Ecu and reprograming boost and ignition curves 519.6 BHP Was measured.
On the real road the effect was most noticable between 5500 rpm and 6500 rpm .
A top end urge, that was missing before,is very evident now.
West reckons a further 15 to 20 Bhp could be produced with a new exhaust(ie Europipe )and some further fine tuning.
These figures were produced with little more than 0.1 Bar extra boost at the top end,but mixed in with custom ignition curve massaging, this in my eyes is the only way to chip a turbo car safely...on a rolling road not by post !!