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The inlet and outlet ports on the engine block are usually larger than those of the manifolds that connect to them.
This allows for scope in the manufacturing process to allow for mismatched alignment.
Generally the engine ports are larger in the upstream flow direction avoiding turbulance but power gains can be made by matching these up.
Diesel Tuning for maximum power and torque
From a diesel perspective, anything that isn’t turbocharged is a waste of time from a tuning point of view. Similarly, anything that isn’t using electronically managed direct injection is a pointless tuning proposal so we are somewhat limited to modern Turbo Diesels.
Get rid of those two ointment bound flies and things get more interesting
High performance engine tuning mods that improve performance.
Careful selection of your internal engine tuning modifications can lift your engine from a purring kitten into a roaring lion!
While it is tempting to throw in every modification you can, it’s worth noting that not all mods work well together. This is something we cover in our articles as we steer you to the right decision on mods for your car.
Remapping the ECU – remaps benefits and issues
Back in the good old days – the task of timing the ignition spark was performed by the distributor. The greater the RPM, the more the timing would advance.
This did a reasonable job but for the most effective power you would need to vary the timing to a greater degree than a fixed ratio advance curve. The electronic ignition system was borne.
