5% throttle yes, from my programmable ECU, torques is an estimate from data lodging. But it's not strange when you have relative big throttles. But it does confirm some tuning articles I've read that the inlet track is far more important than the butterfly valve size. I also have to use Alpha N because of it, and even a diesel brake booster pump, because even with an vacuum manifold I have almost no useful map signal. I also see that on low rpm VE (fuel) is about 80% at only 5% throttle and high rpm that's a different story.
There a video on youtube where some guy takes inlet stack lengths to the extreme testing decent high rpm engine. Pointless long stacks turn it in a diesel.
For example; the way my car is setup and the engine I use, I have the possibility to use very long trumpets. About 35 cm from ambient to the inlet valve and no bends at all. You can see the valves from the filter from 35 cm. Most tuning part suppliers tell everyone short is best for high rpm. Yes, 15 000 indeed, but not for any road car. So is that best for their sales figures or best for tuning? Google pictures for Super 2000 or Super 1600 inlets and you'll know. Same goes with 4 in 1 versus 4 into 2 into 1 exhaust manifolds. Is 4 in 1 better for high rpm, or just easier to weld and sell?
A bit common sense and a whole lot of stubborn basterd from my side, did get me a fairly good road engine. Without flow bench and dyno I did get a 1600 that pulls like a train from 1500 to 7500 and idles smoothly. More then happy.
Just want to say inlet lengths, throttle size, exhaust setup, valve angles, port geo, cam lift, cam duration, cam overlap etc, etc, The result will always be an mix of all factors. So only people with very deep pockets can really predict this all. The rest (like me) is always guestimating at best or doing trail and error. And even when you do fancy 150 bhp/liter, one must go 10 000 rpm +. That's when the flow bench and dyno is needed and that's also when the H-beam rods, solid lifters and 300 degree cams are needed. And the deep pockets.
(just my opinion)
But just suppose it weren't hypothetical.