[Bogeymika]

Thanks jluetjen.
Here is some additional info.

) You say that you only use the car for racing -- what do the rules say are allowable modifications to the engine?
-Not much, i just need to keep it 6cylinder, 3.2liters and no turbo's or any other charging.
2) What is the size, length and design of your headers?
-now those are 41,5mm id, length is 720mm and 3 to 1 with dynomax at the end of each header. Primary tubes are side by side like in 914-6 original. And naturally all primary tubes are equal length.
3) What is your desired rev range?
-now the limiter is in 6300rpm. There is lots of power from around 2000rpm to 5800rpm, then it starts to drop. Rev range feels good now, but it would be nice to rev it some more. I have also direct fire option in my Hestec (and parts) allready, but did not feel that necessary with so low rpm's.
4) I may be the only person who doesn't know, but what is a "Hestec efi" system? Is it a common-plenum design or an individual throttle body design?
-I was expecting this. Hestec is Finnish made Engine Management System, like Motec, Haltech, Wolf, etc.
I'am using a stock 3.2 intake with 3.2 throttle body and stock injectors.