Read my post above again a little closer M8.toplessbug wrote:not really, the effect of such a large tb would be very difficult tuning as the map sensor would see close to atmospheric after a small throttle opening .The tb needs to be sized to match the engine requirements but there is a much greater mismatch tolerance than carbs as you say,but 100mm on a 2lt with our rpm range is a bit much.You could disable the map and work off tps but again there would be a lot of rooting around with ratio's to get any sense as a small change in butterfly opening would need to represent a larger tps step to be anywhere near linear:beer
The size of the TB has NOTHING to do with the tuning of and EFI setup (MAF or MAP) UNLESS the EFI system sees throttle position alone and not MAP as a sole method of fuel metering.
Very few, if any automotive efi systems rely on throttle position alone nowadays.
MAP is MAP is MAP regardless of the size of the throttle body the air comes thru and i clearly pointed out, and how to workaround the issue of large CFM for small throttle openings.
L8tr
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