Update :
- Heads installed and tested along with the 95mm Soler TB
- Pulls like a bear up top
- Torque comes sooner and airmass goes 5% higher most of the rpm range
- Still this FUC*** dip of torque between 3500-4100
- An experienced professional tuner gave me a tune from a similar setup to test to see if the issue was coming from my homemade tune : still the same. I was expecting that. In a sense it means I'm not completely off doing my tune myself
I'm lost.
some pictures of the new cylinder Airmass and estimated power curve when comparing airmass on the 508HP dyno pull
Volumetric efficiency calculation
Power curve with Soler's 95mm Ported TB + Ported 360 CFM heads vs Katech ported 87mm TB + OEM heads
For a trial I tried to put the OEM intake, It does not fit on the 95mm TB....I don't think removing the cats on the X pipe or going 2" headers instead of my current 1" 7/8 will change anything ??