What did it bring?
In figures, the maximum power at the wheels is now 134,5HP which means approx. 155HP at the cranck shaft. In comparison to the original 144 HP a win of 10,5 HP or 7,3%
The torque has been raised from the specified 169Nm to almost 190Nm A win of 21Nm or 12,4%
Even more impresive are the partial load figures and the band width at which the increase has shown.
In driveability, a lot more power in the lower rpm range; no more "dead" feeling under 3500 rpm. Shifting through the gears it is much easier to reach rpm max, Now I do hit 7200 rpm in 4th whereas I couldn't reach 7000 rpm befor. Nevertheless, there still is some difficulty reaching 210 km/h; I must absolutely hit max rpm in 4th and then it takes a while to get to 210.
But, on a nice slight down hill slope on the German Autobahn, I managed to almost hit the rev limiter in 5th gear (reached 7000 rpm / 235 km/h!!!!!!!!) when a Golf moved to my lane and forced me to stop my attempt.
And also it is much easier to move around in traffic jams; no more bouncing around. I can go down to idle (800 rpm) in all gears and when I step on the paddle the car just starts accelerating smoothly.
On the country roads, I can now easily "battle" with 2.4JTD's end 2.5V6's!!!!!!!!!!!!
A big thank you to:
Leo van der Maden, Ivo Schooltink and "Rob" of Madeno Racing in Oude-Tonge
The many thousands of Alfisti who have supported me during my ordeal
Lejo Buning of HTS-Autotechniek (Automotive Technical University) in Arnhem for his generous offer to calculate power loss and tip me on possible reasons
TNO Voertuigdynamica (Technical Physical Laboratory for transport dynamics)
Many representatives of tyre importers and producers who gave me input about the impact of "wide" tyres on car performance
My family who hope I will have more spare time for them now I have lost my daily portion of time consumming "hobby"