![]() The atmosphere then pushes fuel into the venturi/throttle body through the jet into this low area zone - The spray gun principle. The manifold pressure shows the position of the throttle plate and how its governing air flow into engine, and therefore the power the engine will produce, the pressure differential being equal to the square of the airflow. this vacuum is completely separate to the venturi itself, which sees a pressure differential between its narrowest point and the surrounding larger duct (whether this is referenced to atmospheric pressure or not) simply due to air flowing through it having the higher velocity. The highest manifold vacuum is actually when compression braking. especially on these fancy new efi systems with intake air control and fuel cut on decel. and the engine is spinning much faster than at idle.Clio 2.0 F4R – 201.5 BHP 165 FTLB mapped at EFI TuningĤ.73 Shorter final drive (137mph 7750RPM)īraided Clutch line – Solid to chassis leg – Braid from leg to box slave. Safety devices R020 Cage – Double Rear Cross Gaz Gold adjustable Dampers 600F/350R Linear springs Solid Lower Engine mount with custom PU Bushes. ![]() This is a car I used on the road and track days for 2.5 years, it was a fantastic car to learn to drive in and start of doing track days in but after that time I had become a little bored of it, I had bought and built a Megane turbo engine top go into it but before dropping it in I changed my mind and I decided I wanted to stay NA and build a different sort of car, something new which was going to be a new challenge and would require me to learn a lot more about driving, inevitably it had to be RWD. Not long after returning from Spa Francorchamps from two days on track there in the Easter 2018 I started looking at what I could change the car to. M3, MX5, S2000, 330's were the main cars I were looking at at the time. ![]()
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