Took the car out today with the hood scoop covered. Drove with the F15 tube, then changed to the F11, which seems to be a tad better. The ride a cruising speed was smooth and the the constant brake and go feeling was gone.
All plugs were the same color, including number 1 and 5.
Water temp is a round 80ºC and
oil temp 100ºC with the hood scoop covered.
TEmp used to be 75ºC and 90ºC. So the scoop does help with cooling.
Well, maybe it has to do with the emulsion tube, so I removed the duct tape from the hood scoop opening and went back on the road.
All of a sudden the car felt like a bronco wanting to throw you off. The same constant hesitation, constant braking action I noticed all along before.
Definitively it is the hood scoop which is no good for the Webers. Too much turbulence or to fast air flowing over the trumpets.
I will fabricate myself a deflector for inside the scoop to divert the incoming air downwards and I will go back to my self made emulsion tube, which otherwise seemed to have a perfect transition, which the F11 is not so good at.
I'll keep posting what comes out of this.