1S system on test

[Steve VXR]

I'm sorry to dissapoint, but the car we have with nearly 300 bhp is not a Speedster, but a Zafira GSi , hence the reason it is has been difficult to test. People really notice a 7 seater people carrier going past a lot more than a little 2 seater sports car.

Current spec of the Zafira is basically standard internals, uprated hybrid turbo, uprated wastegate actuator, larger intercooler, dual piston atmospheric dump valve, 3" bore exhaust system with one of the catalysts removed and obviously software changes. The Aquamist was added as protection for the stock internals more than to gain power or torque.

I may add Aquamist 1S to my own car, which is an Astra Turbo, which is producing 247 bhp with similar specifications to the Zafira, but no changes from the original software setup. It would be interesting to see whether gains can be made on a stock ECU setup by using a 'bolt on' item such as Aquamist.