it is because you have more air gap quicker to allow air flow with 4x throttle butterfly's and very low restriction.
you will quickly get to 90kpa at about 7-10% throttle angle where as you would have more resolution with a tps based setup that is why its a better option
vac for single throttle, tps for 1 per cyl. both would work vise versa but not as well
look at a motorcycle and it will use tps and a car and it will be vac to calc load for spark advance
Last edited by baz-r : 21st June 2013 at 01:00 PM.
Reason: typo
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