Here what he said when i asked where all the power came from:
The first item put onto the car was a Pipercross Viper Cold air feed induction kit, which I was told gives an extra 12BHP. With just the induction kit alone you could tell the major difference. That put me up to 184 BHP. That was shortly followed by a Magnex exhaust system, which only added an extra 3 BHP, but sounds great. Early this year the car was Superchipped at Demon Tweeks. The apparent performance improvement I was given was 15%, of the current power, which resulted in a total of 211.6BHP. Although I think that total could be a little high. I personally estimate the total power to be somewhere between 208 to 210 BHP. The difference the superchip made was impressive. To account for the extra power I changed to Yokohama tyres, as the standard continental tyres on the car where poor.
The car has not officially been tested for BHP on a rolling road as there are not to many of them in the North West.
I now also believe that K-tech racing have developed a turbo for the 172, which could result in these cars having as much power as the V6.
The car itself has not been lowered, as I did not want to tamper with the way it handled. The only two things I will say though is that with weight in the back the exhaust box touches on the rear axle and gives a slight rattle at very high revs when pushing the car hard. I think that hopefully this has now been cured, with high temp rubber/sound insulation used inside engine hatches on boats, and will not melt at extremely high temperatures. I have tried to place a strip of this on the rear axle and I think it has cured the problem.
Hope this information has been helpful to you.