Hi Nicolas
If you do not mind, can you tell us what you have done to your engine.
What revs do you do?
Did you have it on a dyno yet?
And on the Opel subject.
HOPE YOU KICK HIS ASS!!!!!!
As you can see I am not a Opel fan.
Those of you overseas it is a Vauxhall.
(Hope spelling is right).
My other car is a Volkswagen and in south africa Volkswagen and Opel guys are not buddies.
Good Luck and let us know how you do....