Protomotive is proud to introduce it's bolt-on Stage1, applicable to the 94-98 993's. This system requires no internal engine modifications, it actually doesn't even require engine removal!
The system utilizes stock compression ratio, for unmatched drivability in a turbo charged car. Coupled with a low-boost (.45 bar), intercooled, twin-turbo system that yields 410 brake horsepower and 355 lb-ft of torque, on a vario-ram engine. The 94-95's will net less due to the older style manifold. Check out the difference of our averaged normally aspirated high performance runs compared to the Stage 1, it's simply awesome!
Retaining all of the emissions related components, such as catalyst and lambda probes makes this an ideal street system.
Coupled with the same turbo system components as the Stage 1 bolt-on the Stage 2 OBDI&II turbosystems utilize factory Turbo 8/1 pistons and larger injectors to enable higher boost, which could only mean one thing...
MORE HORSEPOWER
500 or so, depending upon boost pressure. We saw up to 530hp at .9 bar boost, and just over .8 bar religiously gave us 500hp. Not bad for a turbo system utilizing all the stock emissions components!
